I have a Slufoot converted H&R 45/70 barrel in the mail headed my way. BH209 is an option, but I wanna give smokeless a try. Im looking to shoot 180 grain--200 grain 40 cal bullets. I dont need 2500 fps. Most of my shooting is at or less than 100 yards. So I d be happy with 1900--2000 fps. Also this is going to be a lightweight rifle for treestand use. Let me know what works for you.