More on slip fit conicals
I was discussing this with 1874Sharpshooter via PMs and I had sized some of my .458" 405 grain cast bullets down to .451". I was shooting them out of my T/C Hawken with its GM LRH (1:30) barrel and boy did they shoot well. The load was 70 gr of Goex FFFg and I used a felt wad under the bullet. I tried a couple without the wad and they seemed to spread out a bit more. The first 3 were only shot at 25 yards because I didn't have the sights adjusted and the rifle put all 3 into a cloverleaf. At 50 yards I had 2 touching and one just out of the group. This is with open sights. I'm going to re-install my peep sight on the rifle and size some more bullets. This definitely shows some promise as a great accurate game bullet.
The only drawback on that is that brass butt plate and that heavy bullet make for a pretty good bump on the shoulder. My 1895s and Sharps with heavier loads don't have near as much felt recoil as the Hawken.