Justin, I shoot 10 damascus guns three times a week [ not all 10- I rotate between them ] with nitro loads. In the past I've used 700X, PB, 7525, Promo, Solo 1000 & 1250. My friends use Clay Dot and I'm sure there are plenty of others that will give you loads under 7000psi. I'm not sure about 1 1/8 and heavier loads but in 1oz, 7/8, and 3/4 there are quite a few that work and are easy on the shoulder and wallet. Most early American doubles were quite a bit thicker in the barrels than English doubles. All of mine [ Parker and Remingtons ] weigh 8 lbs. and up. Maybe that's one reason we don't worry as much as some of you about being in proof.