I shoot that exact bullet out of mine with 90 grains of Goex 3f. Since mine is a flintlock, I have to use real black powder. The accuracy is very impressive and the balance of that little rifle is SWEET!!

Another load I am shooting is a 375 grain Buffalo Bullet SSB with 70 grains of Goex 3f. It too is great shooting and with that kind of weight would do the damage on deer just fine with that powder charge.

Good luck with your barrel. We will be watching your your range post..