After trying four different bullets, and two powders, I have settled on my load for my Cooper in 20 Tactical. The rifle did okay with the 40gr v-max, but it hated the 32 gr v-max.It really seems to like either the 32gr or 39gr Blitzking, ahead of R-10X. It also shoots both Blitzkings to the same point of impact, and when I worked the 39gr Blitzking up from 3700fps to 3900fps, the point of impact didn't appear to change.
The only issue that I had was locating the Blitzkings, as they are in short supply. Only two dealers had any of the 32gr Blitzkings, and I only found two boxes of the 39gr Blitzkings at dealers, but was fortunate enough to find more , by placing an ad in the EE.
Below are my first two groups fired with the 39gr Blitzking at 3700fps, and below are the groups fired today with the 39gr Blitzking at 3900fps.
The only issue that I had was locating the Blitzkings, as they are in short supply. Only two dealers had any of the 32gr Blitzkings, and I only found two boxes of the 39gr Blitzkings at dealers, but was fortunate enough to find more , by placing an ad in the EE.
Below are my first two groups fired with the 39gr Blitzking at 3700fps, and below are the groups fired today with the 39gr Blitzking at 3900fps.
