Agree with a .54, agree with slow twist, would need to be deep, cut rifling, not button...

Would have to have a 38-44 inch SWAMPED barrel, a straight barrel would be a bear to lug around in the woods...A swamped barrel puts the weight between your hands and the rifle balances properly...

Lancaster design stock, daisy patch box, large Siler flintlock, AAA curly maple stock, Davis double set triggers...