M855 accuracy and consistency on 1:8?

[Tripplet918]

I just bought some Lake City M855 to put away.

I was reading about them and they seem pretty accurate from reviews.

My primary DMR rifle is a 1:8 twist WOA upper. On paper, it should do well with 62 gr pills.

Has anyone tried m855 on a 1:8 barrel? Im pretty excited to try them.

[TomReloaded]

855 is fundamentally inaccurate. Any time you try to center any sort of bimetal core/outer assembly, it won't exactly balance perfectly, which leads to inconsistency.

M855 is blaster ammo. The twist rate is fine, it works in a 9 twist too... It's just not precision ammo at all.

[QED]

855 is fundamentally inaccurate. Any time you try to center any sort of bimetal core/outer assembly, it won't exactly balance perfectly, which leads to inconsistency.

M855 is blaster ammo. The twist rate is fine, it works in a 9 twist too... It's just not precision ammo at all.

This. If you want an accuracy load, then you should consider Black Hills Mk262 equivalent ammo.

[Tripplet918]

855 is fundamentally inaccurate. Any time you try to center any sort of bimetal core/outer assembly, it won't exactly balance perfectly, which leads to inconsistency.

M855 is blaster ammo. The twist rate is fine, it works in a 9 twist too... It's just not precision ammo at all.

Have you shot it? What sort of results did you get?

[seal20]

It will do fine. Not excellent.

[highpower790]

I just bought some Lake City M855 to put away.

I was reading about them and they seem pretty accurate from reviews.

My primary DMR rifle is a 1:8 twist WOA upper. On paper, it should do well with 62 gr pills.

Has anyone tried m855 on a 1:8 barrel? Im pretty excited to try them.

Your ammo should do well enough to hit the target,but i wouldn't expect too much!
Get a 100-200yd zero,then starting in Sept,the xtc highpower(sac valley) matches are back.I suggest trying 200-600yds to really get a feel for the ammo.

[alpha_romeo_XV]

OP what is your barrel length?
I have reloaded a bunch of the steel tip 62g bullets and shot them from different barrels.
The best accuracy was in a 16" 1/9 barrel which gave about 2.5 moa. A good 20" 1/7 gave 5 moa with same ammo.
I consider m855 ammo "machine gun" ammo and no way marksman ammo.

[QED]

OP has a DMR build which implies decent accuracy/precision requirements. M855 is terrible ammo for this use case as it not nearly MOA capable ammo. Try this: https://www.snipershide.com/shooting...ation.7012355/

[kcstott]

I just bought some Lake City M855 to put away.

I was reading about them and they seem pretty accurate from reviews.

My primary DMR rifle is a 1:8 twist WOA upper. On paper, it should do well with 62 gr pills.

Has anyone tried m855 on a 1:8 barrel? Im pretty excited to try them.

If you don't reload go buy two boxes of FGMM 69gr shoot a few five round groups with it. Then shoot your M855 that will give you a base line of what you can expect.

M855 was designed to meet the 4 moa minimum standard. So 600 yards = 24" group minimum from an as issued rifle. Most likely closer to half that but still not great.

[TomReloaded]

Have you shot it? What sort of results did you get?

It's been a long time, but 4-5 moa/inch at 100. This was far far outside what I wanted. Gun shoots about 1-1.5 moa with better ammo.

[kcheung2]

I just bought some Lake City M855 to put away.

I was reading about them and they seem pretty accurate from reviews.

My primary DMR rifle is a 1:8 twist WOA upper. On paper, it should do well with 62 gr pills.

Has anyone tried m855 on a 1:8 barrel? Im pretty excited to try them.

I suspect you will be very disappointed. I keep a bunch of SS109 projectiles around, but when it comes to actually loading anything, I'll choose any projectile over it. Even for blasting ammo, I prefer using plain ole Hornady 55gr fmj, or the Midway Dogtown 55gr open tip.

[smoothy8500]

Looks like I confused M855 and M855A1. The latter has stellar results approximating match levels.

Uhhhhh, no, "stellar" terminal performance maybe.....as it how it penetrates armor and yaws in tissue.

[19K]

I just bought some Lake City M855 to put away.

I was reading about them and they seem pretty accurate from reviews.

My primary DMR rifle is a 1:8 twist WOA upper. On paper, it should do well with 62 gr pills.

Has anyone tried m855 on a 1:8 barrel? Im pretty excited to try them.

3-5 moa is plenty accurate for hitting a human.

[Ronin6]

https://www.preparedgunowners.com/2018/08/08/62-grain-5-56-nato-accuracy-velocity-comparison/

[trailblazer87]

As the others have said, in my Stag upper I get 3 moa with green tips, the same rifle shoots cloverleafs with just about anything else.