There are two schools of thought in paper patching.
1. Patch to bore diameter
2. Patch to groove diameter.
In my case groove diameter was .457 and I decided to patch to groove although many prefer patch to bore.
So, bullet design parameter was .450 and paper thickness of .0035.
Two wraps around equals .457.
Paper is a thin, cotton based paper that I had on hand. I've seen similar paper in an art supply store. Even if you end up slightly oversize, you can make a push thru sizer in the lathe to insure bullet diameter and roundness.
If you patch to bore size, you adjust accordingly. Bullet upset takes care of the rest.
It ends up looking like this.
(You need to Login or Register to view media files and links) I'm in the process of setting up a two trigger rimfire wesson. I'm making the brass out of tubing and machining the rims out of bar stock. Then, I Silver solder the rims into the tubing. I set up the cartridges in the mill and drill out the bases offset for a .22 with the bullet and powder to use as a primer.
I made a simple mold and pushthru sizer that shot a crude "ashcan" wad cutter as a prototype.
I made about 5 cartridges and shot the ashcan prototype. It did reasonably well. So, I've acquired tubing and just acquire brass rod to make about 50 cartridges.
The plan is to make a bullet mold that will duplicate the original rimfire round. Havn't thought this out yet. It's a heeled bullet. It looks like this.
(You need to Login or Register to view media files and links) I have a .54 ballard that Lee Shaver is working on. I'm thinking paper patch bullets for it.
Merle