130g Berger hunting VLD
760, .5g off of max load
3100-3130 fps out of a 24" barrel
sub 1/4" groups, day after day.
Beats anything I have worked up to date in this case...400 yards, sub inch groups
R#15 is 3000 fps at the accuracy node in my X caliber 8T, but shoots bug holes also.
Mine is a hunting rifle, with a Muzzle dia of ..690 on a Model 7, HS stock.
Gentry muzzle break, absolute joy to shoot, and is one very flat shooting load.
X Caliber is doing a very good job making their barrels. I have a 6.5x47 Lapua with a 28" unturned blank that shoots hummer groups, less than .200 is not unusual, with 123g Sierra MK. This barrel is throated .129 and .160-.199 is normal for 140-142g bullets, Harrells brake on this barrel,14lb rifle, kicks about like a 223 Rem Varmint.