Starting point for a 14 gauge (69 Caliber) fowler patched round ball load

[Daryl]

Sounds like great advice to me, Rich. I had no idea those adjustable reamers were that inexpensive.
A final choke of about .005" is all my 20 bore has, and it's patches from shot balls are reusable. On top of
that, it shoots imp patterns with it's imp cyl. choking. Leaving a choke of say, .002" to .003" might give the best of both worlds.
In working with ctg. shotguns with BP as well as my current flinter 20 bore, I've found black powder gives tighter patterns per
choke, than does smokeless. Of course, I've never used, nor would I every use smokeless in a muzzleloader unless I wanted it to blow up.

[rich pierce]

Sounds like great advice to me, Rich. I had no idea those adjustable reamers were that inexpensive.
A final choke of about .005" is all my 20 bore has, and it's patches from shot balls are reusable. On top of
that, it shoots imp patterns with it's imp cyl. choking. Leaving a choke of say, .002" to .003" might give the best of both worlds.
I working with ctg. shotguns with BP as well as my current flinter 20 bore, I've found black powder gives tighter patterns per
choke, than does smokeless. Of course, I've never used, nor would I every use smokeless in a muzzleloader unless I wanted it to blow up.

Daryl, I forgot where I heard of the adjustable reamer technique but I’ve reamed an few original smoothbore barrels and get that mirror finish with concentric circles depending on the light. Same dimension end to end. I know that some use brake hones but I’m not sure they are reliable to be dimensionally accurate end to end.

[Daryl]

I've used brake hones on 2 shotgun's chokes and they worked well, but only with the type of choke that has no "end choke", ie: parallel sided muzzle the length of the shot column.
I had to shorten the tubes of a 10 bore to that configuration, before working on the chokes to match the loads I wanted to use.
I got it shooting 94% right barrel and 96% left. It was dynamite on geese, before the lead shot ban.
I used the adjustable hone on an overly choked single bl., 12 to open it up to use steel shot. That worked.
I suppose I still have that adjustable 12 bore hone somewhere, or Taylor has it?