I know the powder I settled on was IMR-7828 using Combined Tech. 140gr Silver tips. I will double check that if you really want the whole truth. Its 40 degrees and raining and load data is outside in the loading room.
-Also Retumbo printed good results too.
IMR 7828 would put 3 into a quarter (coin) and the Retumbo would be right there with it. Email me if you really want the whole load. Gun tested was a Rem.700 LSS (mountain rifle) w/grey lam. stock