"W.M. large for Jim coon And if it was made by Mr. Large or Mr. coon ? Any information would be greatly appreciated.
Thanks in advance
I'll take a stab at that.
(Made by) Bill Large for Jim Coon. I assume it has a .352" groove diameter and a 50" twist making it a loose or large .32 or tight .33 at .328" with.
If having a .352" bore, it is a tight .36 - actually a .35 calibre. You will have to measure it to find out for sure.
If a .328" bore, then a .319" Lee mould will suffice. If a .352" bore, then a .345" ball would work for most people, however that is an odd size and likely
a custom proposition. I would, however use a .350" ball (RCBS mould) and never look back. The small calibres are easy loading.
Powder charge will vary from 20gr. to 40gr. depending on what the gun (or you) wants.