300 Win Mag vs 300 PRC

[FEENIX]

Got scorching velocity with the 180 grain Berger and the 300 Win Mag with Magpro powder.

MagPro is one of those sleeper powders. I have used it with excellent results on various calibers/chamberings for a while. I took advantage of it and snagged a few when my local Scheels was selling it for $28/lb; nowadays, they are in the $50+ range when available.

 

[DustThroughaFan]

I've been looking at retumbo for my winmag lately but I've got a lot of magpro to burn up first.

 

[MarkInPA]

 

[Alibiiv]

I have loaded belted cases in 5+ decades and have never had case separation.

I have had the same experience with my son's 300 WinMag, but I headspace off the shoulder with a .002 bump. I'm curious if headspacing off the belt causes the separation?

 

[Stevenstl86]

I have had the same experience with my son's 300 WinMag, but I headspace off the shoulder with a .002 bump. I'm curious if headspacing off the belt causes the separation?

I also agree but will sizing off the shoulder of any belted case size the area right above the belt or leave any small area of the brass untouched?l

 

[Alibiiv]

I also agree but will sizing off the shoulder of any belted case size the area right above the belt or leave any small area of the brass untouched?l

Good question. It "may" but .002+-?? All I can say about it is based upon my experience. Never any chambering issues, and no case separation.