From what I've read the more overbore a cartridge the more gain in FPS for every inch of barrel. What I've read in loading manuals depending on the powder burn rate, between a 22" and a 24" barrel there's about a 60 FPS difference in the two. I have a .270 with 22" barrel and with a 130 grain SGK on top of 56.7 grains IMR 4831 through my Chrony I get about 3050-3070 FPS depending on ambient temp. For me that's smokin' ass hot.
Last edited by Filaman; 07/03/20.
