WB
This is my kit, sure I'll give you some balls
Wednesday, April 01, 2020, 19:53

They are 3 lbs. each. I painted them with a plastic paint so when folks finger them it won't get lead on them. You need to remember some foundational Cannon principles. At a minimum you need 0.100" slop or "freebore" between a projectile and the bore. That's 0.05" on each side. Think Peashooter. This keeps pressures from peaking wildly. Also you need the most coarse or large granule powder you can find, no smaller than FFg, back off if you use anything under Cannon grade or Fg. Pyrodex will do but do not use fine grade. Shotgun is the smallest grade I'd use. Also projectile weight should not exceed the projected weight of a round ball the size of the bore. You load a MAXIMUM of 1 oz. (427 grs. by volume) per INCH of bore size. You can't outrun shrapnel.

Your rifled rig sounds too light to be safe, recoil will be violent! My 2.5" bore 1/5 Napoleon tube alone weighs 165 lbs. Free recoil is around 10-12 ft.