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Posted: 12/23/2019 12:37:33 AM EDT
I’ve been trying to dial this rifle in the last few days and I’d like to know how I compare to other AR10 style 308 shooters. Specs: Aero M5 upper/lower, BCG, hand guard and buffer. UBR stock. Krieger 20” M110 profile, 1/11 twist 308. LaRue trigger. Viper 2-25 scope with a Nightforce Mount. I reload and I’ve been testing various loads with SMK 168 and 175 bullets. All my shots are off a bench at 100 yards. New barrel has 120 rounds through it. As you can see my best groups are with factory Federal GMM at just over 3/4”. My goal is 1/2”. I need to improve my shooting position with an adjustable stool and I need to modify my bench so I can load the bipod easier. Tell me how your 308 AR10 style rife groups. I’m slightly disappointed now but I’m determined to make my goal
Hand loads .85”  Attached FileFederal GMM .79”  Attached File |
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Posted: 12/25/2019 12:50:39 PM EDT
[Last Edit: bfoosh06]
[#1]
I wouldn't be disappointed at all... That barrel will only continue to shoot better as the round count increases.
And considering it is a 308... those are very respectable groups. Be sure to take full advantage of the Krieger... I clean with Kroil, VFG pellets ( with the rod adapter ) and JB Bore Polish ( All at Brownells. ) 10rd, ( Hornady AG 155gr ) 100yd group from a freshly cleaned PSA FN CHF... ( Criterion tuning tricks ) 
Criterion 18" barreled PSA , 5rds 168gr FGMM 
What order were the groups fired in ? While it may sound silly... I have seen groups shrink after the barrels bore is "seasoned" to the specific load. I tend to fire at least 5 throw away rounds between the different loads. Also... how is the upper to lower fit ? Nice and snug ?.... if there is any wobble, consider at least a Accu Wedge.. cheap, and given your precision so far, IMHO worth seeing if it shrinks the groups even slightly. |
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Posted: 12/25/2019 12:55:09 PM EDT
[#2]
Oops... and we need a rifle pic. Lol, this is AR15.com
Merry Christmas !! |
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Posted: 12/25/2019 1:03:05 PM EDT
[#3]
Quote HistoryOriginally Posted By bfoosh06:
I wouldn't be disappointed at all... That barrel will only continue to shoot better as the round count increases. And considering it is a 308... those are very respectable groups. I tend to fire at least 5 throw away rounds between the different loads. Also... how is the upper to lower fit ? Nice and snug ?.... if there is any wobble, consider at least a Accu Wedge.. cheap, and given your precision so far, IMHO worth seeing if it shrinks the groups even slightly. |
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