M&P 15-22 accuracy

[badmolassesaccident]

Hi there. Its a 1-6 so no parallax adjustment. Its free at 100 yards.

Ok, that means no parallax error at 100, but you will have a parallax error at 50, unless you head/eye position is completely consistent between groups.

 

[badmolassesaccident]

With the rifle fixed on a rest, wobble your head around and see if your point of aim appears to move across the target. If it does, you have found the problem.

 

[Swedish]

Wow. That is really strange as the company that sold me the wrench to remove the barrels warned they would be tight enough warrant placing the part of the barrel behind the wrench in a barrel vise. I had to do just this in both instances. Any chance they were removed previously for, say, the cutting of a different muzzle thread?? I mean, I don't doubt you but it from my perspective it seems so odd.~Muir

Its my understanding that other than the usual external 'add-ons' they hadn't been modded as such. Looking at the USA forums it seems to have been noted over there too. My best guess is that it may be down to a production batch somehow escaping the usual QA? I'm in the UK of course so its highly probably that the both rifles came in as part of the same batch. A pal also had a problem with his Performance Centre version firing out of battery. Seems this was an issue with some of the bolt faces not being machined deep enough to fully accommodate the cartridge rim. This rifle was immediately replaced on return shipment to the UK importer, no quibbles. Other than those niggles the rifles perform very well indeed.

 

[Jamesy13]

Ok, that means no parallax error at 100, but you will have a parallax error at 50, unless you head/eye position is completely consistent between groups.

Hi yes I mentioned this earlier, could a parallax shift move poi over an inch?

 

[Jamesy13]

I might put another scope on with PA to see how that performs.

 

[Heym SR20]

I agree with Heym's comments.I also have the M&P 15-22 which has problems shooting accurately.I changed ammo from Winchester to CCI minimags and saw a big improvement.Also,using any sort of rest made accuracy non existant.I only shoot hand held now.It's a great rifle and fun to shoot if only for plinking or taking a few rabbits.

My view and experience has been that lightweight and jumpy rifles from a spring powered air rifle on up to big bore rifles really only shoot well when you hold them in firmly and control the jump.

Heavy barreled rifles with minimal recoil and with weight out forward are much easier to shoot and will shoot well regardless of how you hold them.

Parallex issues are sorted by consistent cheek weld.

 

[badmolassesaccident]

Hi yes I mentioned this earlier, could a parallax shift move poi over an inch?

Yes, easily. I often supervise probationers at my target club and see exactly this all the time.

 

[Jamesy13]

Yes, easily. I often supervise probationers at my target club and see exactly this all the time.

Thanks for your help. Will be interesting to see if another scope solves the issue.

 

[badmolassesaccident]

^ Try this- you don’t need a gun range and you don’t need to fire. As per earlier post, put your rifle in a fixed rest pointing at something 25-50 metres away.

Look through the scope, move your head a little.

If the crosshairs appear to move, you have identified the problem.

 

[Jamesy13]

^ Try this- you don’t need a gun range and you don’t need to fire. As per earlier post, put your rifle in a fixed rest pointing at something 25-50 metres away.

Look through the scope, move your head a little.

If the crosshairs appear to move, you have identified the problem.

Nice one. I will do once it stops raining

 

[Muir]

Its my understanding that other than the usual external 'add-ons' they hadn't been modded as such. Looking at the USA forums it seems to have been noted over there too. My best guess is that it may be down to a production batch somehow escaping the usual QA? I'm in the UK of course so its highly probably that the both rifles came in as part of the same batch. A pal also had a problem with his Performance Centre version firing out of battery. Seems this was an issue with some of the bolt faces not being machined deep enough to fully accommodate the cartridge rim. This rifle was immediately replaced on return shipment to the UK importer, no quibbles. Other than those niggles the rifles perform very well indeed.

Yes. The firing out of battery was a known issue. S&W sent me a tool to measure my bolt face. I have used it on mine and my girlfriends MP22. That was some time ago though. Never heard of a loose barrel but I don't 'follow' these guns on any forum.

I have not really shot my rifle from a rest but I shot it a lot off hand. It is very accurate with a Vortex Red Dot. With a binary trigger it shoots very fast, as well.
I am a fan. ~Muir

(Like your Avatar, btw)

 

[Webley]

You mention two piece scope rings. Are they both mounted on the picatinny on the upper? It is not good practice to "bridge" from the upper to the forend with the scope. If you need the scope that far forward, which is typical on AR style guns, then use a cantilevered mount like these.

Cantilever Mounts for Rifle Scopes & Optics | Optics Warehouse

Shop durable cantilever mounts for rifle scopes and optics. Ideal for providing extended positioning and optimal eye relief. Trusted quality and expert advice in the UK.

www.opticswarehouse.co.uk

There is the very real potential for the forend to move in relation to the upper thus moving the front end of the scope and shifting point of aim in relation the barrel.
Matt

 

[Jamesy13]

^ Try this- you don’t need a gun range and you don’t need to fire. As per earlier post, put your rifle in a fixed rest pointing at something 25-50 metres away.

Look through the scope, move your head a little.

If the crosshairs appear to move, you have identified the problem.

Yes you are spot on. Just tested like you said and the crosshair moves a fair amount. Looks like thats the issue.