M Mike Matteson Well-Known Member Joined Jun 26, 2017 Messages 4,332 Location MT Mar 16, 2022 #43 I use IMR 4064 and have from the start. I couldn't get any tighter group if I wanted too. It out shoots me. I use 55 gr Sierra SPBT.
I use IMR 4064 and have from the start. I couldn't get any tighter group if I wanted too. It out shoots me. I use 55 gr Sierra SPBT.