Re: has anyone used IMR4831 with 210 Bergers in a 300WSM?
67gr was actually right on the money. I stacked the first two and the third was about 1/2" off but I know it was me that did that. When I shot the 68's the group opened up to about 1". I have a 20" Browning x-bolt. One of these days I may invest in a chrono but I'm more interested in accuracy.