I have the GM 15/16" x 33" .54cal Flint smoothbore barrel and it's outstanding...here's what I settled on if it'll shorten your trial period:
ROUND BALL DEER LOADS
70/80/90grns Goex 3F
.018" TC prelubed pillow ticking
Hornady .520 (or .530's work with .015")
Very accurate, took a couple bucks with it the first fall I had it.
SHOT LOADS
70grns Goex 3F
Two Oxyoke .28ga prelubed Wonderwads
1+1/8oz #6's
Circle Fly .28ga over shot card
An outstanding even pattern at the 25yds I patterned it.
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"Flintlocks.......The Real Deal"
(Claims that 1:48" twists won't shoot PRBs accurately are old wives tales!!)
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