If in doubt, you can always use the "Firestone Proof" technique.

I use the 8,000 psi AA Xtra-Lite 1oz. loads if I proof. For normal loads I either shoot 6,500 psi 1oz. reloads, or AA Low Noise-Low Recoil (6,200 psi) 7/8 oz. loads for regular shooting.

Last edited by Ken61; 01/25/15 08:06 PM.
I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.