Chemistry Guy
Member
At about 45 yards with a rest my 16" AR pretty much puts 10 rounds of .223 through a single big hole exactly at my point of aim. If I take out the bolt carrier and put in my CMMG .22LR conversion kit, my groups explode to about 4-5 inches and are centered about 6 inches below the point of aim. I am using Federal value pack ammunition.
Is this decrease in accuracy because of the barrel diameter mismatch (a few thousandths), the barrel twist (1 in 9), the cheap ammo, or some other effect related to the conversion kit?
Also, I know that .223 shoots flatter than .22LR, but 6 inches at less than 50 yards seems excessive. Is this typical?
Is this decrease in accuracy because of the barrel diameter mismatch (a few thousandths), the barrel twist (1 in 9), the cheap ammo, or some other effect related to the conversion kit?
Also, I know that .223 shoots flatter than .22LR, but 6 inches at less than 50 yards seems excessive. Is this typical?