.41 mag and Alliant 300mp
Posted: Thu Apr 02, 2020 12:16 pm
Does anyone have any load information for .41 mag and 300mp? I will be using either the RCBS 41-215 swc or a 230gr lfn cast boolit. I picked some 300mp up for a .357 and it seemed to give me better velocity than 296 and 2400. I am getting low on 296 and thought I may not replace it if 300mp will work.