My state (Ms) recently allowed the use of certain single shot cartridge rifles for muzzle loading deer seasons. They have set the calibers as 45-70, 44 Mag., etc. I bought an H&R in 45-70 and used it last season. What a power-house! I shot three deer and all went down within 10 yds. Exit holes were 2 inches in diameter. Ranges were 60, 90 and 120 yards. On my farm the farthest I can shoot is 200 yards. I sight in for 150 yards and can hold a 3-inch group at 200. I'm thinking of selling my bolt guns and using the SS exclusively. Just my 2-cents worth.