Projectile: HAP or Zero conical ...barrel... barrel twist.
My 1911 9mm with a KKM 1x32 twist will shoot 1 1/2" at 50 out of a ramsom rest all day long.
Same load 929 will put 24 rounds in 2 1/2" at 50 yards in a ransom rest.
I have shot many of AHI's loads out of a rest. I know of no one else that has put the effort into verifying his Glock and 9mm PCC loads!!
Tom