How heavy into casting? Well, certainly not so heavy that the fumes could be the cause of any added weight I've gained over the past 20 years. I do enjoy the fact that I can shoot more cheaper with cast bullets so, in a nutshell, I'm cheap. I am a bit interested, however, in the possibility of adding another bullet to the single cast option I currently use in my 45-70s. The one I have is a round nose which works fine in terms of terminal performance when cast soft. Velocity is a limiting factor however. Cast harder it seems to be easier to shoot faster but the nose shape means it zips through. I believe a flat nose bullet may be more practical for potential use where more damage is wanted. So, I'm considering either the Lyman 457643, a 400 grain plain base flat nose bullet with a nice crimping groove, or the RCBS 405 gas check design. I'm a bit unsure whether I need a gas check, in the first place, and, if I do, whether the ones I normally use will work on the RCBS bullet. They work so well on the .452 bullets I have kind of assumed that they are intended for that diameter and not the 6 thousandths larger 45-70 bullets. I hope I'm wrong. I appreciate your suggestion of using partial jackets but, like I said, I'm cheap so hopefully I can figure out a gas check that works if I actually need one at all.
