The Redding two die set should work just fine. I have Redding, Forster and SSK. For AR/M-16 ammo I use Redding FL size and a Redding seat die. For bolt gun ammo I use a modified Redding neck die and Forster in-line seater.
As far as resizing the brass goes, you can normally screw the resize die down to touch the shellholder. That should resize the case enough.
Pay close attention to where you put the expander button. If it is too high you will shear off necks. Too low and you will bend the rod.
You do not have to bell the necks like you would for pistol ammo. For the most part you do not have to crimp.
Most of the powders you will use for the 300 are really slow pistol powders.
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I load and shoot the brass I make
Last edited by Hoser; 05-15-2011 at 07:49 PM.
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