I'm the same as KHickam, with the restriction of having to use a smoothbore in the Spring, but being able to use a rifle in the Fall. So in the Fall, I use a .54 flint GPR, with a .530" PRB pushed by 80grs FFFg.. In the Spring, I am limited to a smoothbore with shot, so I use a .54 flint smoothbore that fires a single .526" shot in a cloth "shot cup", pushed by 80grs FFFg. :rotf: Both of these give me good patterns out to at least 60 yards for the smoothbore, and a bit past 100 yards for the rifle.
The few times I hunt land where they put a limit on what size shot I use to that small stuff, I use 70gr FFFg, 1 cardboard OP card, 6" jute cord frayed into a ball of fiber for use as TOW, 1 more cardboard OP card, 1 7/8 oz #6 shot, 1 OS card. This lets me reach out to around 30-35 yards, but my barrel is 15/16" straight octagon, so not a light fowler barrel, although there's been times I wished it was lighter.