My hunting...bird, small game, hog, deer, bear, TURKEY is all with contemporary flintlocks. For turkey I'll use either of these:

Gentleman's double in 20ga, 30 inch barrels, left barrel choked ten thousandts, right barrel choked 30 thousandts, using 60gr 2f powder and 1 1/8oz #5shot. Effective out to 30 yards. The original of this piece was made in New York in 1810. I have a second set of 16ga barrels for wing shooting. Left barrel cyl bore, right barrel choked 10 thousandts.

New England Fowler in 16ga, 51 inch barrel choked ten thousandts, using 70gr 2f powder and 1 1/4oz #5shot. Totally effective out to 40-42 yards. The original of this piece was (probably) made in Rhode Island in 1755.

Turkey hunting is addicting, isn't it!