Speedo66
Member
I've got a bunch of Trailboss powder, so I went to the IMR Reloading Data Center for loads for the 45-70 Trapdoor Springfield. The original trapdoor I have is in good condition.
Interested in loads with a cast 405g bulllet. They have a page just for Trapdoors.
They show a load with 12g Trailboss, 24,500 CUP, and max of 13g Trailboss, 26,500 CUP.
Neither the Lee 2nd Edition nor the Lyman 49th Edition show loads near those pressures for a Trapdoor.
I'd like to use the Trailboss, but I don't wish to go home wearing Trapdoor parts.
Wanted to know what the feeling is here.
OK loads or too hot?
Interested in loads with a cast 405g bulllet. They have a page just for Trapdoors.
They show a load with 12g Trailboss, 24,500 CUP, and max of 13g Trailboss, 26,500 CUP.
Neither the Lee 2nd Edition nor the Lyman 49th Edition show loads near those pressures for a Trapdoor.
I'd like to use the Trailboss, but I don't wish to go home wearing Trapdoor parts.
Wanted to know what the feeling is here.
OK loads or too hot?