jlewis, I don't shoot a rem 700. I shoot a CVA Optima Pro in .45. I use 90 grains of BH 209 pushing a Hornady 180 GR XTP/HP and I was getting 1/2 groups at 100 yards. I've posted before with information not to exceed 100 grains of BH 209 in a .45 caliber muzzleloader. This recommendation came directly from Western Powders. I haven't checked their web site lately, they may have updated test results regarding the .45. I haven't taken a deer or hog with this combo yet. ML season starts in a couple of weeks, I hope to have some results. I hope this helps.