300 RUM / 190gr Sierra Tipped MK's and / or 200gr SMK's...


What powder are y'all using on the above mentioned combination?

Barrel is 28" long and .850" at the hole.

Where's Deano when I need him. Dude, If you're reading this drop me a line OR give me a call. I'm changing out one of my 338 Edgie Wedgies into a 300 RUM.
Need a start point after I burn it in.