C Caleb85 Well-Known Member Joined Oct 30, 2013 Messages 1,092 Location Northwest, Missouri Mar 11, 2014 #1 Should I be using a neck sizer with my 7rem mag brass? And dose anyone use 50BMG powder with there 300 win mag? I see the powder a lot on the shelf but didn't know if it was a good choice .
Should I be using a neck sizer with my 7rem mag brass? And dose anyone use 50BMG powder with there 300 win mag? I see the powder a lot on the shelf but didn't know if it was a good choice .