Smith & Wesson Forum

Go Back   Smith & Wesson Forum > Smith & Wesson Rifles and Shotguns > Smith & Wesson M&P15 Rifles
o

Notices

Smith & Wesson M&P15 Rifles Dedicated to the Smith & Wesson M&P-15 Rifles


Reply
 
Thread Tools Display Modes
  #1  
Old 06-28-2014, 10:43 PM
ambassador's Avatar
ambassador ambassador is offline
Member
 
Join Date: Jun 2007
Location: United States
Posts: 146
Likes: 1
Liked 5 Times in 5 Posts
Default Lessening felt recoil on a M@P sport

Does anyone have experience with pigtail gas tube,or the Fatboy gas tube on a 16" bbl ?
__________________
Retired Plumber
Reply With Quote
  #2  
Old 06-28-2014, 11:26 PM
JaPes's Avatar
JaPes JaPes is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Aug 2011
Location: NW Suburbs, Illinois
Posts: 4,013
Likes: 3,272
Liked 3,961 Times in 1,871 Posts
Default

Please forgive my ignorance, but in what way does swapping out to a "pigtail" or "fat-boy" gas tube decrease perceived recoil? All the gas tube does is provide the conduit through which the tapped off combustion gasses provide the energy to cycle the bolt. The end of the gas tube still has to fit into a standard gas key.

Recoil energy is recoil energy no matter what, cant cheat that. What you're looking to do is either try and counteract the recoil energy at the muzzle and/or tune the travel of the BCG as it reciprocates.

If you want to decrease how you perceive recoil, there are different methods.

1. You can increase the static mass the gas has to overcome in order to cycle the bolt. Slowing down the bolt will lessen perceived recoil. This can be achieved by installing a heavier buffer (H, H1, H2). You can install a heavier full-auto bolt carrier assembly. Keep in mind that any change comes at a price. Increase amount of static mass the combustion gasses must overcome, you can induce short stroking, weak ejection. Your rifle may become sensitive to the bare minimum propellant charged practice ammo.

2. Increase the progressive resistance the combustion gasses must overcome. Install a stronger recoil spring. Install a hydraulic buffer.

3. You can install a muzzle brake. Redirect the combustion gasses coming out of the muzzle end to counteract the force of the recoil energy.

4. Install a softer recoil pad on your butt stock.
__________________
-John

Last edited by JaPes; 06-28-2014 at 11:30 PM.
Reply With Quote
The Following 3 Users Like Post:
  #3  
Old 06-28-2014, 11:36 PM
JaPes's Avatar
JaPes JaPes is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Aug 2011
Location: NW Suburbs, Illinois
Posts: 4,013
Likes: 3,272
Liked 3,961 Times in 1,871 Posts
Default

I thought about the increased diameter gas tube. The claim is that the increased volume of the gas tube will somehow reduce the energy provided to cycle the action, hence slowing down the action.

You're a retired plumber, your experience is better than mine in this regard. Thinking logically.

When popping off rounds, the gas tube will always have some gas in it. It doesn't exist in a vacuum state. If the opening the gas exits is increased, then you'll get a softer impulse of gas than a narrower exit opening.

Because the end of the gas tube must dock with a standard gas key and they can't change that diameter by much, you're going from a fat tube to a small exit point causing a venturi effect.

bah... it's late... and I'm not thinking straight.

Buy one. Try it out.
__________________
-John
Reply With Quote
The Following User Likes This Post:
  #4  
Old 06-28-2014, 11:38 PM
JaPes's Avatar
JaPes JaPes is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Aug 2011
Location: NW Suburbs, Illinois
Posts: 4,013
Likes: 3,272
Liked 3,961 Times in 1,871 Posts
Default

... but then water doesn't compress... gasses do... which means...

.... I need sleep.
__________________
-John
Reply With Quote
  #5  
Old 06-29-2014, 12:09 AM
Rick_A's Avatar
Rick_A Rick_A is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: May 2013
Location: Northern GA
Posts: 2,841
Likes: 2,025
Liked 4,842 Times in 1,479 Posts
Default

An adjustable gas block is another option.
Reply With Quote
  #6  
Old 06-29-2014, 12:17 AM
A10's Avatar
A10 A10 is offline
SWCA Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Jun 2009
Location: Sadly, Seattle WA
Posts: 10,561
Likes: 22,762
Liked 10,304 Times in 4,263 Posts
Default

Maybe I sound flippant, but, really? Felt recoil on a 5.56 a problem? I guess you could try a PAST shoulder pad.....

I know the heavier the rifle the lower the felt recoil......maybe duct tape some lead to the butt?

Sorry, but I'm really having a hard time with this one......
__________________
Even older, even crankier....

Last edited by A10; 06-29-2014 at 12:13 PM.
Reply With Quote
  #7  
Old 06-29-2014, 04:17 AM
shawnfergie shawnfergie is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Jul 2010
Location: Michigan
Posts: 188
Likes: 58
Liked 21 Times in 15 Posts
Default

I imagine you are talking about changing the recoil impulse rather than lessening the recoil. I had a problem with my Sport wanting to drop the muzzle and my CTR stock was smacking my cheek in an unpleasant way. Nothing terrible but I didn't like my teeth chattering.

I installed a Spikes T2, Cheap YHM muzzle comp and the extended magpul stock pad. The stock pad alone made it so the CTR stock wouldn't move upwards on my cheek and the T2 / YHM brake combo helped even more.
Reply With Quote
  #8  
Old 06-29-2014, 04:27 AM
CrustyShellback's Avatar
CrustyShellback CrustyShellback is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: May 2014
Location: Kalibfornia
Posts: 97
Likes: 139
Liked 52 Times in 31 Posts
Default

OK... someone has to say it. A10 came close...

What recoil?

Seriously, I just spent 4+ hours this Monday, putting 430 rnds downrange firing a Mini-14 and AR15. Shoulder never got tired, or sore... and I've had freakin' open heart surgery. No bruise, nor tenderness afterwards, either.

Of course, if shawn explained your situation, please disregard. Firing those two weapons, I certainly do notice a difference in the way they shoot/handle. The "recoil" is completely different, but my AR benefits from a muzzle break and is a bit heavier. To me, they both feel like springs pushing back against my shoulder. The Mini tends to walk up more, if not paying attention.
__________________
30 Characters 4 Rent.
Reply With Quote
The Following 2 Users Like Post:
  #9  
Old 06-29-2014, 05:01 AM
WR Moore WR Moore is offline
Member
 
Join Date: Oct 2006
Posts: 6,579
Likes: 1,787
Liked 5,342 Times in 2,685 Posts
Default

The pigtail gas tube mimics the length of a mid-length gas system. This should lower the pressure in the carrier about 20% over stock. This will result in the bolt staying locked longer. I've got reservations about reliability on this if used for defensive purposes.

The suggestion about heavier buffers also will increase dwell time or the length of time the bolt stays locked. Both the mentioned gadgets will reduce the carrier velocity slightly and the reaction from the carrier bumping the end of the buffer tube. However, the heavier buffer will also increase the jolt when the carrier moves forward, causing the muzzle to dip slightly.

As others have mentioned, the recoil impulse of the AR in 5.56 x 45 mm doesn't amount to much. Just over 3 ft/lbs for the cartridge firing. Low mass carriers and different action/buffer springs (DO NOT do this on a firearm intended for defensive use!) will also change recoil characteristics. This is potentially spending a lot of money to mitigate something that doesn't amount to much in the first place.

No insult intended, but perhaps you need some instruction on how to actually use the weapon system. Poor technique can result in unpleasant results. BTW, there's some difference of opinion on this, but if you're sticking your nose up against the charging handle, please lengthen the stock and try it with decent nose clearance from the charging handle. Might change your opinion if your nose isn't being whacked every time you pull the trigger.

Last edited by WR Moore; 06-29-2014 at 05:07 AM.
Reply With Quote
The Following 2 Users Like Post:
  #10  
Old 06-29-2014, 09:47 AM
SiGfever SiGfever is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2009
Location: Virginia USA
Posts: 153
Likes: 25
Liked 43 Times in 28 Posts
Default

The Smith's are over-gassed, install an "H2" buffer and drive on.
Reply With Quote
  #11  
Old 06-29-2014, 10:55 AM
Maddmax's Avatar
Maddmax Maddmax is offline
US Veteran
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2009
Location: N.E. Iowa Boondocks USA
Posts: 2,888
Likes: 5,524
Liked 1,597 Times in 993 Posts
Default

Quote:
Originally Posted by A10 View Post
Maybe I sound flippant, but, really? Felt recoil on a .556 a problem? I guess you could try a PAST shoulder pad.....

I know the heavier the rifle the lower the felt recoil......maybe duct tape some lead to the butt?

Sorry, but I'm really having a hard time with this one......
I'm having a problem with this too. He needs to shoot a couple hundred rounds though a 308 and then discuss recoil issues.
__________________
THIS WE'LL DEFEND ΜΟΛΩΝ ΛΑΒΕ
Reply With Quote
The Following 3 Users Like Post:
  #12  
Old 06-29-2014, 11:28 AM
bhayles's Avatar
bhayles bhayles is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2014
Location: N Georgia mountains
Posts: 799
Likes: 614
Liked 707 Times in 330 Posts
Default

Quote:
Originally Posted by CrustyShellback View Post
OK... someone has to say it. A10 came close...

What recoil?
What he said.

In the past I've had a .300 Win mag and a 10 ga double...THOSE had recoil...

My 5'3" wife who loves shooting and 5'7" 14 year old stepdaughter who doesn't and is a bit prissy are asking the same question when they read the OP...What recoil?
__________________
Bob | KM4DEO
Sport | Glock 22
Reply With Quote
  #13  
Old 06-29-2014, 12:45 PM
JaPes's Avatar
JaPes JaPes is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Aug 2011
Location: NW Suburbs, Illinois
Posts: 4,013
Likes: 3,272
Liked 3,961 Times in 1,871 Posts
Default

I'm not going to rip into the OP. I agree that .223/5.56 recoil is easily managed. Maybe the OP has a physical limitation we don't. Maybe the OP just wants to tinker. I've tinkered to no end.

OP, if you want to decrease perceived recoil install a H or H2 buffer and a muzzle brake.
__________________
-John
Reply With Quote
The Following User Likes This Post:
  #14  
Old 06-29-2014, 01:13 PM
bhayles's Avatar
bhayles bhayles is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2014
Location: N Georgia mountains
Posts: 799
Likes: 614
Liked 707 Times in 330 Posts
Default

I don't mean it to be "ripping into the OP"...I'm just having a hard time understanding what there is to fix. I realize there is SOME recoil...heck, even a 22LR has a little...but, to me at least, its not even noticable. Honestly, if a fly lands on my nose during the trigger pull I notice the tickling from that more than even noticing the recoil when the gun goes "Bang!".
__________________
Bob | KM4DEO
Sport | Glock 22

Last edited by bhayles; 06-29-2014 at 01:59 PM. Reason: spelling
Reply With Quote
  #15  
Old 06-29-2014, 01:36 PM
eschoendorff eschoendorff is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Jan 2013
Posts: 100
Likes: 25
Liked 48 Times in 23 Posts
Default

Is it possible that some of the M&P15s have more recoil than others?

I came home the other day with bruises on my shoulder/peck area. That evening I saw them in the mirror and could not for the life of me figure out what had caused them - it didn't occur to me that the recoil was THAT bad (besides, I had done other yard work that day and at first figured I must have done something in the yard). I keep a pretty firm grip on my rifle and pull it in to my body. Could that be the problem?

Didn't mean to hijack the thread, but I hate to admit that I have some idea what the OP is talking about.

Could some of these units be WAY over-gassed?
Reply With Quote
  #16  
Old 06-29-2014, 02:04 PM
bhayles's Avatar
bhayles bhayles is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2014
Location: N Georgia mountains
Posts: 799
Likes: 614
Liked 707 Times in 330 Posts
Default

Quote:
Originally Posted by eschoendorff View Post
Could some of these units be WAY over-gassed?
I suppose its possible, but I can't see how a gun from a quality company could have that much variation between guns of the same model.

I've only shot one Sport...heck, I've only shot one AR/223/5.56 of ANY kind, make, or model, so I have nothing to compare. With MINE, for ME, I just don't notice any recoil. YMMV
__________________
Bob | KM4DEO
Sport | Glock 22
Reply With Quote
  #17  
Old 06-29-2014, 03:07 PM
Maddmax's Avatar
Maddmax Maddmax is offline
US Veteran
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2009
Location: N.E. Iowa Boondocks USA
Posts: 2,888
Likes: 5,524
Liked 1,597 Times in 993 Posts
Default

Quote:
Originally Posted by eschoendorff View Post
Is it possible that some of the M&P15s have more recoil than others?

I came home the other day with bruises on my shoulder/peck area. That evening I saw them in the mirror and could not for the life of me figure out what had caused them - it didn't occur to me that the recoil was THAT bad (besides, I had done other yard work that day and at first figured I must have done something in the yard). I keep a pretty firm grip on my rifle and pull it in to my body. Could that be the problem?

Didn't mean to hijack the thread, but I hate to admit that I have some idea what the OP is talking about.

Could some of these units be WAY over-gassed?
You take blood thinner ? That can do it.
__________________
THIS WE'LL DEFEND ΜΟΛΩΝ ΛΑΒΕ
Reply With Quote
  #18  
Old 06-29-2014, 03:27 PM
shawnfergie shawnfergie is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Jul 2010
Location: Michigan
Posts: 188
Likes: 58
Liked 21 Times in 15 Posts
Default

I've had my sport give me a bruise before. Same with my father in law. I'm late 20s and no blood thinners. I believe my sport is over gassed and since that trip I have added a YHM brake and the CTR extended pad. Both seemed to help a great deal.
Also I have a brand new 15" Viking Tactics rail to install :-).

Over gassed or not she sure does shoot nice.
Reply With Quote
  #19  
Old 06-29-2014, 03:29 PM
LimaCharlie's Avatar
LimaCharlie LimaCharlie is offline
US Veteran
Absent Comrade
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Oct 2012
Location: Oregon
Posts: 511
Likes: 63
Liked 651 Times in 269 Posts
Default

I had mercury recoil suppressor tubes in the stock of a .458 Lott to lessen felt recoil. I don't know if they are available for a .223.
__________________
U.S. Navy - U.S. Army, ret
Reply With Quote
The Following User Likes This Post:
  #20  
Old 06-29-2014, 03:41 PM
shawnfergie shawnfergie is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Jul 2010
Location: Michigan
Posts: 188
Likes: 58
Liked 21 Times in 15 Posts
Default

Do those mercury tubes actually work for large calibers?
Reply With Quote
  #21  
Old 06-29-2014, 03:45 PM
LimaCharlie's Avatar
LimaCharlie LimaCharlie is offline
US Veteran
Absent Comrade
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Oct 2012
Location: Oregon
Posts: 511
Likes: 63
Liked 651 Times in 269 Posts
Default

They helped a little. People still saw a visible shockwave coming off of me when I shot it. I sold it when the ammo got over $120.00 for a box of twenty.
__________________
U.S. Navy - U.S. Army, ret
Reply With Quote
The Following User Likes This Post:
  #22  
Old 06-29-2014, 04:29 PM
shawn mccarver shawn mccarver is offline
SWCA Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Aug 2005
Posts: 7,907
Likes: 3,513
Liked 6,728 Times in 2,620 Posts
Default

I wasn't aware that the .223/.556 has any "felt recoil." Perhaps my shoulder is nerve damaged, but the .22 caliber rifles, be they rimfire or centerfire just do not recoil sufficiently to even notice, at least for me.

The .375 H&H, on the other hand, is a different story.
Reply With Quote
  #23  
Old 06-29-2014, 06:58 PM
JaPes's Avatar
JaPes JaPes is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Aug 2011
Location: NW Suburbs, Illinois
Posts: 4,013
Likes: 3,272
Liked 3,961 Times in 1,871 Posts
Default

There could be a bunch of different factors both in the specific rifle and specific person to cause an individual to want to find a way to reduce recoil. There's also one more thing to consider, maybe the M&P 15 is a person's first center fire rifle. Without trigger time on a center fire rifles, the OP may not have any context in which to frame their shooting experience.

For example when I first started shooting semi-auto pistols any other caliber than 9mm felt like it was a gigantic step up in perceived recoil. I got my recoil tolerance pushed by shooting a .357 Magnum snubby. It got pushed further by shooting a .44 Mag snubby.
__________________
-John
Reply With Quote
The Following User Likes This Post:
  #24  
Old 06-29-2014, 08:51 PM
Rastoff's Avatar
Rastoff Rastoff is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Dec 2011
Location: So Cal (Near Edwards AFB)
Posts: 14,710
Likes: 2,926
Liked 17,102 Times in 6,271 Posts
Default

The answer to the OP is, no, changing the gas tube won't appreciably reduce felt recoil. If you were to fire the same rounds in two M&P Sport carbines, side by side but configured with a stock tube and an after market one, you might feel a difference. Even if you did, I think it would be unlikely that you'd feel any real difference.

Quote:
Originally Posted by shawn mccarver View Post
I wasn't aware that the .223/.556 has any "felt recoil."
This isn't fair to the OP. Everyone feels recoil differently. The fact that there is a mass being sent in one direction bears out that there is some recoil. Maybe y'all have fired many thousands of rounds and the OP has not. Not picking on you Shawn, but the comment that many have made here.

I have heard this same claim a lot in the shotgun realm. A guy will buy a new gun and proclaim, "This thing has no recoil!" This is absolute poppycock. Every gun has recoil and every shooter feels it to some extent. Because I shoot from 10 to 15 thousand rounds of shotgun shells every year, I'm not going to bruise, but someone else might.

Felt recoil depends on three things; mass and speed of the ejecta, mass of the device (gun) and gun fit. The smaller/slower the bullet, the better the fit and the heavier the gun, the less the recoil will be felt. Sorry to say, but the AR doesn't fit anyone all that well.

Should I get into the length of the impulse as well?

Quote:
Originally Posted by shawnfergie View Post
Do those mercury tubes actually work for large calibers?
Yes, but only marginally. Any added mass will help reduce felt recoil. However, if you're looking at 28lbs of recoil force, how much do you think an 8oz weight will help?
__________________
Freedom isn't free.
Reply With Quote
  #25  
Old 06-29-2014, 10:04 PM
WR Moore WR Moore is offline
Member
 
Join Date: Oct 2006
Posts: 6,579
Likes: 1,787
Liked 5,342 Times in 2,685 Posts
Default

With reference to the "overgassed" comments. All the rifle length ARs are overgassed by design to ensure reliable function under adverse conditions.

Going to a carbine length gas system jacks the pressure in the bolt carrier up even further (Yes, the gas port is smaller in diameter. This increases the amount of [dwell] time necessary for the pressure to build to the point the system operates, it doesn't change the pressure.). Properly built carbines (of all types) use a different extractor spring and plug than the rifle.

The H series buffers are intended to control the cyclic rate in full auto fire. Yes, you can use them to fine tune the operation of your specific semi-auto weapon should you desire it. It doesn't mean that the lack of them is a defect requiring remediation.
Reply With Quote
The Following User Likes This Post:
  #26  
Old 06-30-2014, 05:10 AM
spad124 spad124 is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Jun 2012
Location: North Central Illinois
Posts: 973
Likes: 1,460
Liked 705 Times in 351 Posts
Default

To the OP,

Rastoff is correct regarding why a shooter feels recoil. Also I agree the AR tends to not fit well. This can be overcome somewhat by making sure you firmly pull the gun into the pocket of your shoulder. Using a sling as a shooting support helps tremendously. Google how to use a "hasty sling".
Reply With Quote
  #27  
Old 07-01-2014, 09:58 PM
JaPes's Avatar
JaPes JaPes is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Aug 2011
Location: NW Suburbs, Illinois
Posts: 4,013
Likes: 3,272
Liked 3,961 Times in 1,871 Posts
Default

A civilian semi-auto rifle being a tad overgassed is a benefit in my eyes. It makes the rifle compatible with a wider variety of commonly found off the shelf ammo.
__________________
-John
Reply With Quote
  #28  
Old 07-01-2014, 10:26 PM
Rick_A's Avatar
Rick_A Rick_A is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: May 2013
Location: Northern GA
Posts: 2,841
Likes: 2,025
Liked 4,842 Times in 1,479 Posts
Default

Personally, I'll use the heaviest buffer/spring/carrier combo (in that order) that cycles Wolff and TulAmmo reliably.
Reply With Quote
  #29  
Old 07-02-2014, 09:23 PM
MasterTech1960's Avatar
MasterTech1960 MasterTech1960 is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2014
Location: Maryland
Posts: 348
Likes: 323
Liked 358 Times in 139 Posts
Default

Forgive me if this has been said, but at 6 foot 4 inches tall and 265 lbs. I precive recoil a little different than say my wife who is 125 lbs. Shooting technique is also a big factor. Everyone is different.
Reply With Quote
  #30  
Old 07-03-2014, 12:17 AM
gunny4053's Avatar
gunny4053 gunny4053 is offline
US Veteran
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Oct 2009
Location: Rigby, Idaho
Posts: 1,599
Likes: 539
Liked 1,474 Times in 601 Posts
Default

Forgive me, but I've fired ARs from my chin and nuts, and I'm still trying to find the perceived recoil that's so much more significant between every 3 year old and middle linebacker in the world. When someone finds it, please point it out.
__________________
SFC, US Army, Retired
Reply With Quote
The Following User Likes This Post:
  #31  
Old 07-03-2014, 12:36 AM
Jboutfishn Jboutfishn is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Apr 2013
Location: State Of Jefferson, Ca
Posts: 471
Likes: 93
Liked 153 Times in 93 Posts
Default

"Yes, but only marginally. Any added mass will help reduce felt recoil. However, if you're looking at 28lbs of recoil force, how much do you think an 8oz weight will help?"

I believe the theory behind a mercury tube is to spread the recoil over a longer period of time. Instead of a sharp slap, the recoil is perceived more as a push.

The burn rate of powder used also affects the perceived recoil. An example of this is with my 416 rem mag. Using BLC-2 powder to achieve 2600 fps with a 350 gr bullet the perceived recoil is much harder than when using Rel 15. I use the term "perceived" because you not only feel it in your shoulder, but the muzzle blast is also different.
__________________
State of Jefferson
Jim
Reply With Quote
  #32  
Old 07-03-2014, 01:28 AM
Rastoff's Avatar
Rastoff Rastoff is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Dec 2011
Location: So Cal (Near Edwards AFB)
Posts: 14,710
Likes: 2,926
Liked 17,102 Times in 6,271 Posts
Default

Burn rate does affect actual recoil impulse, but the difference between powder rates is unlikely to be felt by a normal person. I tested this by giving an unsuspecting shotgun shooter shells that I had loaded. All the shells were loaded with the same powder, but the shooter was told that they were different. As expected, the shooter reported that the shells he was told had a faster burning powder, had more recoil. This was obviously psychosomatic because all the shells were the same.

I'm not saying it's impossible, just very small.

The theory of how a mercury device works is actually twofold. First it adds mass which will absorb some of the recoil. Secondly, that mass is not fixed. The motion does indeed act to attempt to spread the recoil impulse out over time. It has been my experience that the affect on felt recoil is minimal.
__________________
Freedom isn't free.
Reply With Quote
  #33  
Old 07-03-2014, 05:45 AM
Riccur's Avatar
Riccur Riccur is offline
Member
Lessening felt recoil on a M@P sport  
Join Date: Sep 2008
Location: Maine
Posts: 513
Likes: 138
Liked 525 Times in 160 Posts
Default

https://www.youtube.com/embed/vwHs4DtQU3I?autoplay=1

Maybe a range session with this would change ones "perceived" recoil?
Reply With Quote
The Following User Likes This Post:
  #34  
Old 07-04-2014, 09:57 AM
iron6 iron6 is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Dec 2013
Posts: 31
Likes: 0
Liked 5 Times in 4 Posts
Default

Try sticking a pad on it. I consider mosin nagants light shooting and can fire a box of 50 full house .357s one handed but the ar recoil annoyed me some how. I finally figured out it was the stock

Sent from my HTC One using Tapatalk
Reply With Quote
  #35  
Old 07-14-2014, 10:57 PM
Back2School Back2School is offline
Member
Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport Lessening felt recoil on a M@P sport  
Join Date: Jul 2014
Posts: 6
Likes: 1
Liked 0 Times in 0 Posts
Default

Quote:
Originally Posted by iron6 View Post
Try sticking a pad on it. I consider mosin nagants light shooting and can fire a box of 50 full house .357s one handed but the ar recoil annoyed me some how. I finally figured out it was the stock

Sent from my HTC One using Tapatalk
Funny - I was just going to add my story.

Went to the range with my 10/22 and my mosin. I also wanted to rent and try my first AR. I shot my mosin first. Only about 10 rounds since the range decided I can no longer shoot my surplus ammo and had to use my hollow point hunting rounds.

I switched to the AR and was shocked I felt recoil. All I have ever heard is they have no recoil. I am not saying it was mosin like, but it was a lot more than even my .45 carbine -which isn't much more than my 10/22.

I have shot all kinds of rifles when I was young, and am just getting back into rifles now, but the AR had more recoil than I was expecting.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
felt recoil drewm@p40 Smith & Wesson M&P Pistols 7 12-22-2014 02:06 PM
Less Felt Recoil With.... TwoPoundPull Reloading 20 08-07-2012 11:49 AM
Felt Recoil errante Ammo 14 10-01-2011 03:15 PM
Felt recoil anchors Ammo 0 12-22-2009 07:20 PM
Which has more felt recoil? gt4point6 Reloading 5 12-20-2009 11:56 AM

Powered by vBadvanced CMPS v3.2.3
smith-wessonforum.com tested by Norton Internet Security smith-wessonforum.com tested by McAfee Internet Security

All times are GMT -4. The time now is 04:56 AM.


Smith-WessonForum.com is not affiliated with Smith & Wesson Holding Corporation (NASDAQ Global Select: SWHC)