My first attempt at paper patching 45-70 cast lead bullets and I met with a slight issue. Everything seemed to work great except I think I have the patch riding too high up on the bullet nose on the Lee 457-340 395 gr 2 cavity mold. This is my go to boolit in my Browning 1885 45-70 in black powder but now I'm experimenting with paper patching and using Unique as a powder charge.
The particulars;
Unique 11-15 grains...still doing charge workup.
WLR primer
.060 vegie wad on top of powder to separate from my filler.
Case filler to keep boolit from dropping deep into case when seating. I'm using steel cut oats, seems to work better than corn meal. I don't resize the cases as they are only shot in this high wall rifle, I just bell the case mouth, seat and minimal if any crimp is applied but if I don't use filler the boolit drops into the case out of sight.
Anhyway, my problem is the paper patch contacts the rifling when inserting and a small ring of paper is being cut when I close the breech. The next bullet won't chamber but If I press it in firmly with my fingers the paper ring sticks to the bullet tip and I can remove the bullet, pick off the ring, reinsert the next round and it seats fine.
I realize this is an obvious problem, the paper is too long. My question is how far up the boolit nose should the paper extend? Do I want it just below where the lands touch the boolit nose? This boolit contacts the rifling in my Browning well above the crimp groove on this bullet relatively far up on the curved radius of the nose. Should I run the paper patch just under the point where the bullet contacts the rifling or can I have it even lower, perhaps just protruding above the case.
Bullet shown in photo on the left, right bullet is Lyman 457-191 which I tried yet again to get my 45-70 to like but it does not. It's getting resized and repurposed as a 45 Colt bullet.
Thanks in advance for any help.