I've used several bullets in my Chaparrel 1876 in .45-60 WCF. Montanna Swaged Bullets at 300 grains and 60 grains by volume shoots well in my 1876 as well as my soft cast Rapine 405 grain, hollow based, Rapine bullet. My rifling has a 1 in 22 inch twist and I use both SPG and my home made Bees Wax/Crisco/ Murphy's Oil Soap mix. I use Goex 2Fg, modified .45/70 Cases with the flash hole opened up to 3/32nd inch and a Remington or Winchester Large Rifle Magnum Primer.