01-28-2022, 02:14 PM
well went back to the range yesterday and am beginning to think the rifler really does not care for 8028 XBR. Average group size was 1.7 MOA, average ES was 45 FPS. Smallest group was 1.5 inches. Velocities are also running pretty low. Shotmarker at 100 gave me 2210 FPS @ 27.0 gns. Working backwards I am estimating 2375 at muzzle. This is not my first rodeo though, I have broke in and developed loads for at least 10 bolt guns, only gave up on one barrel as just a plain bad shooter. I just put a Shilen .308 on that shot like crap until I went to 4064 and 168 SML's. Then the 1.5 MOA rifle started putting five in .3 or .4 inches I have had a couple that did not find their groove until I tried 4 or 5 powder/bullet combination
I am going to switch to 2520 and or TAC. Maybe retire the brass I have been using, the case mouths are getting pretty beat up. Also going to move to CCI 450's when I switch powders. I am considering installing the adjustable gas key I have on the shelf, I have waiting on finding the final load first. Anyway it's time to back up and try a different route
I am going to switch to 2520 and or TAC. Maybe retire the brass I have been using, the case mouths are getting pretty beat up. Also going to move to CCI 450's when I switch powders. I am considering installing the adjustable gas key I have on the shelf, I have waiting on finding the final load first. Anyway it's time to back up and try a different route