So I got rid of my 1-9 twist barrel and am installing an upper with a 1-7 twist barrel. Thing is, I have a bunch of m193 and other 55gr ammo saved up that Im worried wont shoot well out of my new barrel. Are my worries unfounded? Or should I be getting rid of my 55gr ammo and buying heavier stuff. Obviously from now on Ill be buying 62gr and heavier ammo, unless there arent any issues with shooting 55gr ammo in a 1-7 twist barrel... Any help would be most appreciated! Thanks!