Been covered before, but maybe time for it again. In order to use a combination that cleans the last shot as you load the next, there are a few 'things' that must
be adhered to. First, the ball should be from .005 to .010" smaller than the bore. Most of the guys up here use a .005" smaller than the bore, ball.
ie: .535 in a .54
--- .495 in a .50, etc.
A patch at least .0918" compressed, needs to be used, or better yet, 10 ounce denim works for me and has been working for 49 years.
Before even attempting to 'start" this ball and patch the muzzle must be smoothed. That means the usual 45degree angled cut by a tool in the barrel maker's lathe, must
be smoothed and polished so there are not sharp edges to the grooves or the lands.
In order to start this combination into the bore, a short starter should be used. In smaller bore sizes, this is not necessary as the ram rod in .25 to .40 calibre can be choked
up on and the patched ball can be shoved into the muzzle, with steady pressure straight down. The reason it work in these small calibres is there is little lead to move in the
small balls. The larger the ball, the more lead has to be "moved", inside the patch. A sharp crown will cut the patch, ruining the accuracy and clean shooting.
If you send me your e-mail in a PM, I will mail you a video showing loading in this way.
This crown shows the before polishing:
This crown is after.
This is the method, using 320 emery cloth, or 320 Wet/Dry paper. Turn the barrel or gun 90 degrees very 15 seconds or so. Rotate your wrist to rotate the paper or cloth in the
muzzle.