Hi all, I have a Heritage Rough Rider Bigbore in .45 Colt, the cylinder throats measure .4525. I also have some Hornaday 255 grn, 454 diameter swagged lead bullets. I dropped one of the unloaded Hornaday bullets in the cylinder to see how tight they would fit in the cylinder chamber throat. In order to push the bullet through the cylinder I had to take my cleaning rod and give the bullet a couple of sharp raps with the palm of my hand. So my question is, is the .454 bullets to big for the cylinder which measures .4525? Thanks Much Paul
If they chamber, they will shoot and size themselves on the way. Lead bullets don't spike pressure like jacketed do as their friction quotient is so much lower. The perfect fit for a revolver with the drop through test is a 1-2 pound push with a pencil to get them through, lighter and heavier BOTH have less accuracy potential. It is not a matter of assigning a number in thousandths, it is the feel of the 2 pound push. Myself and many cast bullet shooters will custom hone bullet sizing dies to get exactly the 2 pound push fit without taking measurements and use the trial method.