Starting loads

[peter nap]

I have 5 H&R ultra slug guns in 12 ga. One is a dedicated 12 FH (from hell) gun, one is a dedicated Blammy shell (Modified 12 FH Case) and a third, I want to dedicated to Black powder Blammy.

The blammy's are 50BMG cases with a 12ga Brass Head bonded on and a bushing that allows me to 209 primers. They are trimmed to 3".

I'm shooting 110 of RE17 with a 1200 grain slug in the dedicated one now.

I have no idea what BP load to load these cases with though.
Any ideas?

http://i198.photobucket.com/albums/aa57/peternap/b1-3.jpg

[NickSS]

With black powder just load it up until you have no air space and let it go.

[cajun shooter]

Call and talk with the owner of Circle Fly Wads. He shoots a lot of BP shotgun and would be able to help you on how to start. With the H&R I will tell you to wear a heavy coat. With the correct wad column I would think that your shell will be a big meat getter, nothing will walk away from a hit.