Yep, and that says it all. I suspect the poor accuracy from many AR-15's using 55gr FMJ ammo stems from the quality of the ammo. Bulk produced, especially lots rejected by the military, is not likely to produce the accuracy that high quality ammo would produce in a given rifle.
Shot a friend's AR yesterday - he was clueless about twist rates, but I informed him last night
- Thread starter chief38
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From the top.
1:7 for the purple guy. The carbine's 1:9 and does it really matter with a 5.5" barrel?
I've been happily blasting away with 55 grain but according to the chart I can go a bit heavier.
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