Re: 6.5 Rem Mag
I was shooting 51.5 grains of R-19 with a 140 gr SST and then 140 gr Nosler OTM. This is not the fastest load at 2801 fps (per the book) but it was Nosler's accuracy load. I had an issue igniting the powder with (regular) CCI primers and was getting hangfires with this powder/primer combination. So, I was only able to get a 1 inch group.
I pulled down the unfired cartridges and tried (regular) Winchester large rifle primers and CCI magnum primers. I did not go back and shoot for groups as I next shoot this rifle at a farm on steel. I had hits at 100, 200, 300 400 and back to 800 yards. Back at 800 I had a spotter zero me into the center of the plate then we shot at a quart sized jar of Tennerite. It make a hell of an explosion when hit, I was happy.