I dont Load the 50 70 Rds like you would in a Rifle for starters.
All i do is fill the case with Pyrodex almost full but with just enough room for a 50 Cal Round ball and a wad pushed into the End of the 50 70 case flush with the cases mouth.
By useing a 50 cal Rd ball it keeps the presure way down!
I would never load a full case of Pyro with a 505 Gr Bullet that would be Dangerous!
All i do to get the cases to clear the Breach block is file a little bit off the Cases rim in one spot at the back of the case and make sure that part is down at 6 oclock when inserting the Cartridge.
They go in easy and come out easy to.
Because there no projectile sticking outa the end of the 50 70 case they will go in and out without fileing the rims ive since found out.
I wont load up normal Bullets with full Pyro Loads only half wheatlets half pro loads.
So its all in the Reloading
All you guys that worry about me blowing my self up can Relax eh!
I know what im doing and am actully a very carfull reloader.