Built a .45 ACP AR-15 with 16" barrel. Shot it the other weekend with standard 230 grain FMJ .45 ACP. I know its a pistol round. But im wondering if lighter grain ammo would fare better in a carbine?
Wanted to build another PCC AR and Picked .45 ACP cause I like the round. But was debating .40 S&W or 10mm. 10mm does not work well in a blowback cause it's too powerful and too long and im just not a fan of .40 S&W. But maybe shouldve gone with .40. I already have a 9mm and I can get decent groups at 100 yards with that with the right ammo.
But im wondering if I got some 185 grain or maybe even 165 grain if they make it in .45 ACP, that it would preform better at distance? Beyond 50 yards...the 230 grain rounds go all over the place it seems. Curious how lighter ball ammo performs. And if the lighter ammo would gain more velocity from a longer barrel?
Wanted to build another PCC AR and Picked .45 ACP cause I like the round. But was debating .40 S&W or 10mm. 10mm does not work well in a blowback cause it's too powerful and too long and im just not a fan of .40 S&W. But maybe shouldve gone with .40. I already have a 9mm and I can get decent groups at 100 yards with that with the right ammo.
But im wondering if I got some 185 grain or maybe even 165 grain if they make it in .45 ACP, that it would preform better at distance? Beyond 50 yards...the 230 grain rounds go all over the place it seems. Curious how lighter ball ammo performs. And if the lighter ammo would gain more velocity from a longer barrel?