Shooter13
Gold $$ Contributor
The problem is if you wait until groups start falling off you are probably in the middle of a string and if you drop ONE dot in UBR it can cost you the loss, my 30 BR it doesn't seem to matter, the 22PPC and 6PPC are cleaned after every relayI took a long range rifle course a couple of years ago and shocked myself by hitting 2 out of 3 at 905 yards. rifle was a Savage LRP in 6.5CM. The instructor said 'on a bolt gun only clean if your groups start falling apart'.
Holy smokes, I never followed that advice but I guess there are different ideas out there.