"I have found that I can carry several speed loaders with back up shots, my short starter and capper with caps in one pocket while I am hunting. I usually carry 5 backups and have never needed more than that in the filed. This is a lot easier than having to carry a big clunky possibles bag along in the field. "
If you cone the muzzle, you can even throw the short starter away. Thumb start the bullet and ram it home with the ram rod. It works fine in my Lyman GPR, and should do so with an in-line.
-Kees-