If you like light recoil, deadly performance, and classic guns, Goex Olde Eynsford black powder is just the ticket for your shotshell loads.
Lyman Black Powder Handbook & Loading Manual, 2nd Edition: 0011516972514: Sam Fadala
Reloading 12GA with (Pyrodex) Black Powder in the Field
GUNS Magazine Black Powder Cartridges Part II - GUNS Magazine
Shotgun Shells 101 - Firearms Legal Protection
Winchester Super-X 12 Gauge 2-3/4in #7.5 1oz Upland Shotshells - 25 Rounds
Shotshells 101 An Official Journal Of The NRA
Steps for Loading an In-Line Muzzleloader
How to Load a Shotgun: 13 Steps (with Pictures) - wikiHow
Developing Effective Handgun Shotshells - Shooting Times
Reloading 2 12 gauge - anyone?
Black Powder and Muzzleloader Shooting Basics - Guns and Ammo
Black Powder Rifle Load Chart