black powder 12 gaurge brass shell slug loads - SASS Wire - SASS

I have a Century Arms lever action shotgun on order. What I would like to do is load 12 gauge brass shells using pure lead cast slugs. What I can not on the web is information from anyone who has done this. So any help would be appreciated.

Cowboy Action Shooting

Loading slugs in all brass Magtech 12ga shells

full brass cased 12 gauge in a semi auto?

What 12 gauge round has the most felt recoil? I mainly shoot slugs

Light 12ga loads for new Buckaroo - SASS Wire - SASS Wire Forum

Need to find a good 12ga load recipe - SASS Wire - SASS Wire Forum

Advice on powder for 12 gauge brass shells • Enough Gun

Accurate Mold Designs for an Original Marlin 1894 44-40

What company makes a muzzleloading shotgun similar in power to a modern 12 gauge? (links appreciated) - Quora

What is the range of a 12-gauge shotgun? - Quora