Looking for a .308 bullet 175-180 grain that jumps well to the lands. Loading for a AR10 so COL has to stay at 2.80.
30 Caliber Bullets
- Thread starter para1505
- Start date
Gotta agree, if 168 or 175 FGMM don't shoot well, something is missing. Maybe try a box of 175 to rule it out?
Think I will try some 175 FGMM I've tried three different bullets 2 different powders. Did ladder tests on them all and 2 inch is as good of group as I could get except for the 168 FGMM 1.75".
The ladder node is 42.8-43.4 of Varget been loading 43.1
Do we assume that you built the rifle? Whose barrel? Most worthwhile barrel makers have a sub-MOA guarantee.
Don't rule out a scope that's went to hell. I've seen guys chase shots and run through tons of rounds only to find out their scope had gone south. I have an lr-308 with a 24", 1-10 twist barrel that shoots anything between 150grs and 178 grs well, but it does prefer the heavier stuff. Mine especially likes 178gr hornady a-max's in LC cases, over 41.5 grs of IMR4064, with a CCI 34 primer.
It is a DPMS their 18 fluted barrel 1:10 twist I have installed a Larue 2 stage trigger
I was just cleaning it and noticed the scope is off level. I did install it with a EXD Enginering scope lever. The cantilever mount is a Stoner from Midway Arms. It was torqued to the right specs. Scope is a LR 17 USO. Next I will lap the mount
Do you have another scope and mount you can take from another rifle? One the you know is working/tracking?
No I don't
Not just laying around its probably the mount
Or I do have a a SWFA 10HD ILL TRY IT
Sounds like you are on a good path to figuring it out. Take the 10HD with you to the range so you can swap should it still have issue after the mount fix.
I've have had great accuracy with 155 Lapua,155 Amax, 168 Amax and Reloader 17.mag lenght..1-10 twist KAC SR25 in the past
Not all rifles like 175gr FGMM. Try a 175SMK/CC/OTM over 41.7grs of IMR4064 at 2.800” COAL. My AR loves it. Shoots .5 MOA with it.
I've been having the same problem. I've ran the gauntlet on bullets from 147 gr up to 190 gr and cant get below 1.75 moa. Next step is trying some different powders to try and get the barrel harmonics to match up. Ive been using Varget and re-15 but need to try some faster powders and see if that helps. If not, then it's new barrel time! I've tried 2 different scopes as well and same results. Good luck!!
Not trying to be rude... but have you ever shot a large frame AR better than what your getting now?
Gas guns are notorious for being "difficult " to shoot.
You have tried all the usual ammo its either you or the gun.
Have some one else that shoots one well try it.
Gas guns are notorious for being "difficult " to shoot.
You have tried all the usual ammo its either you or the gun.
Have some one else that shoots one well try it.
My AR-10 with DPMS heavy fluted 18" 1:10 twist barrel absolutely loves 175gr FGMM and Hornady 178gr HPBT & ELD-X with 43.5gr of Varget.
Well finally got back to this I have ruled out scope and cantilever mount. This barrel must be junk gonna clean it good and have my buddy scope the bore. If it looks good that way I will order a new barrel
Few things we still havent resolved...
Can you or have you consistently shot large frame AR's less than 1" before recently?
Have you had someone else shoot it to rule out operator induced issues?
How many rounds on the barrel?
Has it ever been shot crazy hot? It's a gas gun so gotta ask.
Gas Block and tube correct?
Correct bolt?
Can you or have you consistently shot large frame AR's less than 1" before recently?
Have you had someone else shoot it to rule out operator induced issues?
How many rounds on the barrel?
Has it ever been shot crazy hot? It's a gas gun so gotta ask.
Gas Block and tube correct?
Correct bolt?
Similar threads
