Hey guys, picked up an M&P 10 this past Wednesday. Took it to the range yesterday and it was all over the place with Privi Partisan PPU 145gr FMJ. Granted I know it's not the best ammo but was all I had. Running a Burris 4.5-14 in a pepr mount. Also installed a geiselle trigger. Could not get it to hold a decent group at all. Upon inspection of the bore, directly under the markings on the barrel, you can see where the stamping distorted the inside of the bore. So now waiting on S&W to send a label.
Accuracy issues and warranty claim.
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MichiganScott
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Rifles are a lot like computers - garbage in, garbage out. Try some other ammunition after checking to see if everything is tight. If the scope is new, you might want to try another scope that is a known entity.
rojodiablo
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What on earth did they use to stamp the barrel????
Do they use a 30 ton press, or a strike jig and a stamp.....?
So what is this non decent group you got? I would guess a 4-5" group at 100 with it? since mine splatters at 2" or so at 50!
Mine does not like light rounds. I am going 168-180 next. That trigger you spent on will not help you here!
Mine does not like light rounds. I am going 168-180 next. That trigger you spent on will not help you here!
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What on earth did they use to stamp the barrel????
Do they use a 30 ton press, or a strike jig and a stamp.....?
It's pretty pronounced. The customer service rep said this was the first he has heard of it. I wonder how many others have the same issue but yet to discover it.
vfin
Member
Lets see photos...or I ain't buying into this post, at least not when this is the OPs 3rd post in the Forum, absent any proof.
vfin
vfin
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Yeah 4-6" groups were the norm. It's unfortunate as most of the cheaper ammo is 308. Oh well, I'm set on selling it once it comes back from repair because of the proprietary barrel and BCG. Already purchased everything but the rail to build up another one, this time with a 1/11" twist. Hopefully it will do much better.
The gun is what it is, but my basic thoughts on it are a tradeoff. You got a pencil barrel at mid length and cheap ammo to work with you get what you get. That **** just seems to fly everywhere. Some will not even cycle the gun.
I ran some Monarch(PPU) 150 through mine and it was iffy. The Rem 150 corelock ran better, but not great. We are still at 2-4 in groups here.
Better bigger bullets are more stable, and the only way I see settling one into a decent pattern. I will say this again, a 6" group at 300 is still a dead hog! And a decent purpose for a AR platform carbine with a light barrel.
I shall try to insert the info from my other thread that is very informative! Credits to Appiccola!
Got back from the range this morning. Actually had some folks show up with different types of ammo to try the rifle. The only problem, was this particular range does not allow any NATO/foreign ball ammo whatsoever.
Recap of the rounds tried:
1) Hornady 110 grain TAP FPD .308, 3165 fps adv. MV - this round cycled smoothly. The recoil from this round is almost non-existent for super sonic ammo ... a little harder than .22lr but lighter than NATO 5.56. Accuracy at 100 yards was much better than Federal AE 168 grain OTM. The worst shooter to try it had a 3/4" group.
2) Corbon 185 grain Performance Match FMJ-RBT Subsonic .308, 1000 fps adv MV - just to clarify, I have to change the buffer and spring to a 3oz buffer with a reduced power AR15 spring and open the gas block 100% to cycle the ammo.
3) Herters 180 grain SP .308, 2756 adv MV - This ammo had issues with the feed ramp. I was told that this is a foreign made house brand for Cabellas. The bullet has a very blunt, almost flat nose that would not follow the feed ramp properly during semi-auto firing. The bullet is probably specifically for bolt rifles. All 3 shooters had erratic 3" to 5" groups with strays. The fella that brought them did not recommend them highly either.
4) Remington 150 grain Core-Lokt Ultra, 2820 fps adv MV - cycled fine. 3 different people tried, but could not get better than a 2" group with the ammo.
5) Barnes 168 grain VOR-TX .308, 2680 fps adv MV - cycled fine. Everyone shot groups of 1" or less.
6) Remington 165 grain Premier Scirroco Bonded, 2700 fps adv MV - cycled fine. Worst shot group with this ammo was approx. 1.25" ... the best was about 3/4".
7) American Eagle 168 grain OTM .308, 2650 fps adv MV - cycled well. Worst shooter had a approx. 1.5" group, best shooter was just under 1".
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souljahboi
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I got the same results (6" at 50m) and saw the same indentation into the bore. Just haven't had time to talk to s&w. Let me what kind of hassles you get from them.
And what were you using for ammo? I am telling you some of that **** just flies where it wants, forget the gun!
I am interested!
And I could care less if you buy into my post. It doesn't hurt my feelings, not even the slightest. I don't have a bore scope or I could get you pictures. I've already remedied the problem and contacted S&W before even making this post. I only posted my findings for others to check their barrels to see how big an issue this is, and one person has already said they have the same thing going on in their barrel. So move along, nothing to see here.
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I understand the effects of bullet weights vs barrel twist. And I wasn't expecting a miracle group with Privi but I was hoping it would do better than it did. Oh well, like I said, this one will be sold and I'm building up a 308ar with a 1/11" twist. Hopefully I'll have better luck
Maddmax
US Veteran
I find a lot of people that buy a new gun, never read the manual, buy the cheapest ammo on the shelf and head to the range with-out even cleaning the storage lube off and re-lubing the weapon as stated in the manual. Then complain about the weapon not functioning correctly. Let alone NOT even going through any break-in period firing of the weapon...
....amazing.
....amazing.
You're going to sell the M&P-10 and build another rifle in hopes it will shoot Privi ammo accurately??
vfin
Member
My M&P10 is absolutely & beyond any doubt--> Puuuurfect !!!
Just thought I'd throw that out there.
vfin <---doesn't use garbage in, garbage out AMMO.
Just thought I'd throw that out there.
vfin <---doesn't use garbage in, garbage out AMMO.
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I did re- inspect my barrel today, yet I found no issues. Mine still sucks with cheap ammo, and although I have got some better stuff to try I have not used it yet.
Seems there are a few folk getting great results, but most are using a free float, and I am not there as yet. I may, but I wish I had better before and after info! I think it may do 1.5 or less without free float and if so I may ride that horse for a while.
Seems there are a few folk getting great results, but most are using a free float, and I am not there as yet. I may, but I wish I had better before and after info! I think it may do 1.5 or less without free float and if so I may ride that horse for a while.
Negative. I'm building another with a 1/11" twist with hopes that it will shoot lighter bullets better, not necessarily with privi. I understand garbage in garbage out. Granted I didn't test any other light 308 rnds but accuracy with the light bullets wasn't the main reason for me to sell the M&P. The proprietary barrel nut and barrel extension is. Not S&W's fault, I should have done more research on my end. Oh well. You live you learn.
MichiganScott
Member
As much as I like S&W and want a .308 caliber AR, they will not be my first choice because of the proprietary parts. I realize all .308 AR's are proprietary, but S&W is worse than most.
Good luck on your quest.
Good luck on your quest.
Arik
Member
Try different ammo. Cheap doesn't automatically mean bad. Identical guns will shoot differently with identical ammo. My buddy's Remington 700 308 shoots better with cheaper ammo. The cheaper the ammo the more accurate it is. My own bolt actions do ok with cheap ammo. They don't do .5 moa but I'm not expecting that. Usually 2 and under, which I'm fine with.
Another friend has a Mauser and it's good with fmj. As soon as you put in hunting loads he can't even hit the paper
Sent from my SCH-I545 using Tapatalk
Another friend has a Mauser and it's good with fmj. As soon as you put in hunting loads he can't even hit the paper
Sent from my SCH-I545 using Tapatalk
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