I am a newbee for sure to reloading, did some in the 70's for 300 win mag, then cam kids and life and now find myself retired and back in the 70's again in a different way, if you know what I mean, Anyway going to try my hand at 45-75 Winchester. I am wanting to use smokeless and can not find a load for it or if I have to add something to take up the space in the shell if the powder is not larger enough. Anyone with experience please share