M&P 10 a 100 yard limit ?

Plenty of scope. A 4.5-14x for testing followed by an Acog TA11 for field simulation. I understand the "10" doesn't have a floated barrel. Nevertheless, there was much on the site and other places about MOA accuracy which seemed too good to be true at this price point. The jury is still out but so far my experience appears to confirm that, luck aside, you tend to get what you pay for.
 
Plenty of scope. A 4.5-14x for testing followed by an Acog TA11 for field simulation. I understand the "10" doesn't have a floated barrel. Nevertheless, there was much on the site and other places about MOA accuracy which seemed too good to be true at this price point. The jury is still out but so far my experience appears to confirm that, luck aside, you tend to get what you pay for.

Sorry if I was making it sound like you don't know what you are doing. You should be doing better that that with a scope.

With a scope, I think I was doing about 2" but I do not have a stock '10. I had it "Magpuled" as much as I could before I ever left the store, so I don't know how much (if any) difference the new hand guard would make compared to the OEM one.

I do think some people do tend to exaggerate the accuracy of a stock S&W though. In my experience, MOA accuracy with an AR at 100 yards is not probable but not impossible. Much would depend on the shooter in that case. I can do MOA shots with my .22LR at 50 yards but that is a conventional rifle, with a scope, in a Calwell bench rest but I haven't been able to duplicate that with the '10 at 100 yards yet.
 
Said I'd followup with a picture of my target with the SST's... ;
 
Sierra makes their 165 grain Game King for those who want to hunt with a bullet that approximates the 168 gr. BTHP match bullet. This bullet may provide the answer you are looking for in this situation.
 
Sorry if I was making it sound like you don't know what you are doing. You should be doing better that that with a scope.

With a scope, I think I was doing about 2" but I do not have a stock '10. I had it "Magpuled" as much as I could before I ever left the store, so I don't know how much (if any) difference the new hand guard would make compared to the OEM one.

I do think some people do tend to exaggerate the accuracy of a stock S&W though. In my experience, MOA accuracy with an AR at 100 yards is not probable but not impossible. Much would depend on the shooter in that case. I can do MOA shots with my .22LR at 50 yards but that is a conventional rifle, with a scope, in a Calwell bench rest but I haven't been able to duplicate that with the '10 at 100 yards yet.

Shot this today with a $350 break open H&R Handi Rifle at 100 yards (300 Blk). Center Triangle... about one MOA is you don't count the flyer below. Otherwise, closer to two, but that one was probably my fault. Can't do anything about the trigger.
 
Nice shooting! Break open rifles are reputed to be one of the most accurate platforms out there! Maybe because the action is so strong and simple?

Flyers happen even with quality ammo. :-)
 
Said I'd followup with a picture of my target with the SST's... ;

Houston...we have a problem! Definitely got something a miss with the 10 shooting a group like that with those SST's. I was hoping that round would be the ticket for your 10, Shamen. If those SST's don't group well, I doubt you are going to solve that rifle's issues with other ammo. Might be time to let S&W take a look at it.
 
You might try the old style 150gr Round Nose bullet to see if
your barrels twist likes them as a last try on ammo.

Boattail and pointy sp or plastic tip bullets have less body
touching the rifling and lands of the rifle barrel, which might
be one reason for the inaccurate groups.

I had a rifle that hated the new fancy bullets with all the bells
and whistles. The RN worked well to 250 yards if I needed to
reach out that far for a deer in the .30 cal. I don't know why
but hay, it works.
 
That type of vertical stringing is indicative of changing pressure on the barrel. Common when using a non-free float handguard
 
That type of vertical stringing is indicative of changing pressure on the barrel. Common when using a non-free float handguard

If this is the issue it's the easiest to fix. My handi rifle was stringing until I added a $.05 rubber o-ring between the barrel and the hand guard. You can see the difference above. The M&P on the other hand will cost several hundred $ as I'll need to replace the hand guard and probably the gas block. I'm not sure if I want to throw that into a look-see experiment that may be throwing good money after bad.
 
All,

I was at an indoor range. At 20 yards, I have five round in less then a dime. It is a brand new 2014 model but I cannot complain about the accuracy. The range master fired the weapon and did the same thing with three rounds. Hope S&W fixes it.
 
If this is the issue it's the easiest to fix. My handi rifle was stringing until I added a $.05 rubber o-ring between the barrel and the hand guard. You can see the difference above. The M&P on the other hand will cost several hundred $ as I'll need to replace the hand guard and probably the gas block. I'm not sure if I want to throw that into a look-see experiment that may be throwing good money after bad.

Life is about taking chances. I can't promise you that a free float tube will fix any M&P-10, but it helped the one I'm shooting. I did pay close to $300 for the free float tube on the Big Smith but that's because I wanted one made of carbon fiber. But you'll never know if a free float tube will work until you try it. If worst comes to worst and it doesn't help, you can pull the tube back off and sell it to get most of your money back.

The problem with the having a non-free float handguard on an AR is that when you rest it on something to try for accuracy, you have to put the same pressure on the rifle each time you shoot it or you get vertical stringing. I've seen it several times. Initial results with the new free float tube show groups are smaller and are round.

The factory gas block is larger and heavier than it needs to be- I think it weighs a quarter of a pound! Between replacing the gas block and the factory muzzle device, about 6 oz have been shaved off. The new gas block didn't cost much and was well worth the investment in weight savings alone
 
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The short answer for the M&P10 (and possibly quite a few other .308/7.62 rifles) is that the light, bulk ammo is for close in work where accuracy is less of an issue and expensive, heavier bullets, like the 168 and 175 grain, boat tail, hollow point, match are for when you want to "reach out and touch someone".

You get what you pay for. I sighted my rifle in with the good stuff and use the cheap stuff for fun time at the range.
 
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Life is about taking chances. I can't promise you that a free float tube will fix any M&P-10, but it helped the one I'm shooting. I did pay close to $300 for the free float tube on the Big Smith but that's because I wanted one made of carbon fiber. But you'll never know if a free float tube will work until you try it. If worst comes to worst and it doesn't help, you can pull the tube back off and sell it to get most of your money back.

The problem with the having a non-free float handguard on an AR is that when you rest it on something to try for accuracy, you have to put the same pressure on the rifle each time you shoot it or you get vertical stringing. I've seen it several times. Initial results with the new free float tube show groups are smaller and are round.

The factory gas block is larger and heavier than it needs to be- I think it weighs a quarter of a pound! Between replacing the gas block and the factory muzzle device, about 6 oz have been shaved off. The new gas block didn't cost much and was well worth the investment in weight savings alone


I'm considering a free float tube as you suggest. What degree of improvement did you see. Before and after in MOA?
 
3 shot groups with a variety of good ammo and using a shooting bag as an improvised rest from a bench went from 1.5-2.5 MOA (with the average being about 2.0) MOA to 1.0-2.0 MOA (with the average being about 1.25 MOA and one group going .75). Before changing to a low profile gas block and the FF tube, vertical stringing could easily add 2 MOA to the groups, if I wasn't careful. These are preliminary findings. When I get a chance, I'll give the rifle a more thorough wringing out
 
3 shot groups with a variety of good ammo and using a shooting bag as an improvised rest from a bench went from 1.5-2.5 MOA (with the average being about 2.0) MOA to 1.0-2.0 MOA (with the average being about 1.25 MOA and one group going .75). Before changing to a low profile gas block and the FF tube, vertical stringing could easily add 2 MOA to the groups, if I wasn't careful. These are preliminary findings. When I get a chance, I'll give the rifle a more thorough wringing out

I wasn't looking for another project but I need to fix this... Just ordered an Apex hand guard and low profile block. I'll post another target when I'm done.
 

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