Long time rifle/handgun cartridge reloader for decades, both black and white powders. I have a Henry 12ga single shot and find it a bit hard to find good slug load data. I've got a Lee drive-key 7/8oz mold coming and already have Magtech brass hulls that I've primed with Federal LP primers. I also have BPI L078 plastic cushion wads (which I'm told work well with the lee 7/8oz slug) and WST powder. Intent of this shotgun is for both plinking and hog hunting.
Is it best to just load the shell with powder, the wad with slug, and an over-shot card to retain the wad/slug? I would use glue or wax to retain the the load - I don't want to crimp the brass.
Will the wad protect the bore from slug leading?
If I loaded the brass with real black powder, and used Circle Fly wads instead of a plastic wad, and I powder coated the slug, would that eliminate (or reduce) bore leading?
And lastly, I have cylinder, improved cylinder, and rifled chokes for the Henry - could I slug test all of them for accuracy to 50 yards?
Much obliged.