2 part Question.

[rtsj]

Both concerning powder. What would Accurate 8700 be used in. I know its a slow burner and was thinking about trying it in my 300 Rum with 210 Bergers. Is this a good plan or no? Also for fireforming can i use a shotgun powder like American Select and if so how much? Have a local guy selling powder CHEAP!!!!!!

Thanks Roy

 

[Lefty7mmstw]

Accurate's 2005 guide shows 106 grain top end for a 220 in the 300 rum and 106 -111 top end for a 200 depending on bullet. I'd start in the middle 90's and work up till I got to 3000 fps or so with it.
As far as fireforming, more info would be good, but usually ten grains of bullseye speed powder and some farina will blow out most brass pretty well. Small cases (under '06 class) will need less powder. Go light and go up until you've got good form.