Accuracy issues and warranty claim.

[MistWolf]

If you run a patch through the barrel, does it have a tight spot right there?

How good is scope mount?

Sounds like it's time to contact S&W

 

[vonn]

Ok, I was skeptical at first when I first read about this issue but after reading it a couple of times it started sounding like the issues I've been having - very inconsistent groups.

At first I thought it was the ammo, I tried everything from Federal 150 gr all the way up and back down to what I'm using now which is the Winchester 168 gr silver tips - which isn't the absolute best but its not bad.

Still no improvement, so at $30 a box for ammo I decided to switch scopes. I had just a cheap UTG scope which I figured had to be the problem so I bought the Nikon M-308. Which again is not the best but its not bad.

Still no improvement, see the pics below. The target on the right is from 7/23 of last year. The target on the left is from this year after I put the new scope on and started using the Winchester silver tips, both targets were at 100 yards. Lastly, I think the bore pic tells it all, you can see the ripple/distortion/bubble clearly at the top of the bore. As mentioned by the member that's started this thread, its located directly underneath the stamping closest to the muzzle of the barrel. Right underneath the ".308 WIN 1/10 5R".

Things to consider:
I've shot over 300 rounds through the barrel.
I've used multiple brands & grains of ammo.
I've used multiple scopes.
I've made no major gunsmithing mod's except changing the furniture.
I have 20/20 vision - for you guys that like to blame user error on everything.

I've seen these guns shoot much tighter groups than what I'm able to produce, am I crazy or is the "spot" on the inside of the barrel enough to blame on inconsistent shooting?

All input is welcome, thanks.

Please keep us updated on what you find out . I would like to know if you can feel the tight spot with a patch also. Interesting post.

 

[rojodiablo]

Ok, I was skeptical at first when I first read about this issue but after reading it a couple of times it started sounding like the issues I've been having - very inconsistent groups.

At first I thought it was the ammo, I tried everything from Federal 150 gr all the way up and back down to what I'm using now which is the Winchester 168 gr silver tips - which isn't the absolute best but its not bad.

Still no improvement, so at $30 a box for ammo I decided to switch scopes. I had just a cheap UTG scope which I figured had to be the problem so I bought the Nikon M-308. Which again is not the best but its not bad.

Still no improvement, see the pics below. The target on the right is from 7/23 of last year. The target on the left is from this year after I put the new scope on and started using the Winchester silver tips, both targets were at 100 yards. Lastly, I think the bore pic tells it all, you can see the ripple/distortion/bubble clearly at the top of the bore. As mentioned by the member that's started this thread, its located directly underneath the stamping closest to the muzzle of the barrel. Right underneath the ".308 WIN 1/10 5R".

Things to consider:
I've shot over 300 rounds through the barrel.
I've used multiple brands & grains of ammo.
I've used multiple scopes.
I've made no major gunsmithing mod's except changing the furniture.
I have 20/20 vision - for you guys that like to blame user error on everything.

I've seen these guns shoot much tighter groups than what I'm able to produce, am I crazy or is the "spot" on the inside of the barrel enough to blame on inconsistent shooting?

All input is welcome, thanks.

Considering that the bore is .30", and that ding equals about .08"- I'd say heck yes that is enough to keep you from grinding the shots tighter than 2MOA. Time to call S&W.

Were it a different type of flaw in the rifling, I might be inclined to argue against you, if for nothing more than the sake of argument. But you are spot-on. That's enough to change things a bit.

(EDIT) Last ditch resort, get a friend who is a known good shooter to run the rifle for a session, and see where he shakes out. If he is noticeably improved over you? Then you might need to practice more with the AR platform rifles. (Some just don't really jive well with them; apples shooting oranges type of thing.) But I will bet a cheeseburger he's also all over the place.

 

[Joey1911]

Mine is spot on. I've only owned it for 2 years and probably........1,500 rounds mostly federal XM80CL. No accuracy issues at all. I love this frigging rifle! I just left my range. Using iron sights at 50 yards is spot on then I put my scope back on ( quick detach setup) and it held zero... I couldn't be happier with this rifle.

 

[JustAnotherGunGuy]

My friend had issues with accuracy, turned out to be a simple fix. The barrel nut was finger loose!
Sometimes the simplest things are worth checking first.

 

[Jwryan84]

Mine has the exact same issues. Cleaning it today it was very noticeable with the naked eye that there is barrel damage under the stamp. I sent an email and received an email saying it could be 5 days before a reply.

 

[souljahboi]

Okay, so I just got the rifle back a couple of days ago.
I had sent it in for re-barreling middle of last month.
They replaced barrel and shot it for accuracy. When I talked to the customer support rep, they couldn't give me any details.

The stamp is noticeably much shallower and the bore is nicely rifled with no visible defects.

I'm itching to take it out now that I have a SS10x42 & bobro mount that I bought while waiting for the repairs.

 

[akrawc2]

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.

OK then, when you receive yours back, I will be interested in taking this off your hands

PM Me please

 

[Tommasini]

AR10 Compliant accuracy

I purchased the heavy barrel .308 without flash hider. I've fired a lot of different ammo through mine with little or no problems. When shooting the cheap Herters from Cablea's I usually have 1 FTF in every 50-60 rounds and that's it. Mine is sighted in with Hornady 150gr InterLock SP Whitetail rounds and it shoots GREAT.

 

[copemech]

Mee too!

Well, I finally had a chance to get out and fire off a couple of project guns last weekend after freefloating the big 10 and finding a loose barrel nut, thought I was home free on that one.

Seema I was highly disappointed at the results as I managed same or better groups with my old Colt SP1 with the open sights and a cheap red dot than the 10!!!

Just me and the rangemaster there at end of day, I was telling him the story. He said "can I try it?" Sure, I said, pulled it out of the truck again and loaded him up a ten round mag.

Now this kid is not stupid, he is about 25 yr old ex marine competition shooter, on the bench, bagged it up, set the scope, got comfortable.

After 6 rounds he just cleared the gun, handed to me and smiled, (at 100 I cannot see the hits, but he can with the 14x scope), grins and says "It's not you!" And this was with good ammo.

Ok, lemmie look, so I did, just another 6" group! Yep!

So, I have now changed the scope and mount, just to eliminate all variables. I figure a Nikon 3x9 on P series mount should do at 100. We shall see next weekend if possible.

Next step, return to factory! As this is becoming non-fun!

 

[Jwryan84]

Got mine back after rebar real also. Anybody have a compliant barrel they want to swap? Wanting to cut it down but the regular barrel is too skinny. PM me if interested.

I tried to get S&W to replace with compliant, but their CS is pretty quiet, guess I'm lucky to get he barrel replaced.

 

[Shamen]

Wow... My issues are similar. See

http://smith-wessonforum.com/smith-wesson-m-p10-rifles/407511-m-p-10-100-yard-limit.html

It isn't you or the ammo. It's cost me hundreds in ammo and range cost to rule out shooter and ammo etc,.. I'm done with my mine. It seems that with S&W quality you just pay and hope for the best. I won't be gambling with them ever again.

 

[deadwood83]

Nobody seemed to post pictures, so here's one. Purchased the rifle on 02/14/15. I think it's hilarious how the visible text is "WIN"

 

[Isomaad]

Photo sucks! You can't tell anything from that photo whatsoever. Post a higher res/tighter crop of the end of the barrel.

 

[sgtsandman]

I can see that something is there but not what. I certainly would not be good if the barrel stamping impressed all the way through to the rifling.

 

[deadwood83]

My apologies. Forgot to crop. 14mp makes the lettering tiny tiny tiny.

When I called S&W they didn't even seem surprised. Had a return shipping label in ~3 minutes and FedEx picked my rifle up within 2 hours.

 

[2cants]

Great photo Deadwood38

Can you confirm that the WIN as seen in the grooves is in alignment of the stamping on the outside of the barrel?

Reason being my stamping is in line with the barrel - your photo shows it on an angle.

best of luck.