Thanks Doug,
I will be keeping the hand loads at around 25,000 to 27,000 psi. I have killed boar and deer effectively with this load. (50 grains of imr 3031 behind a 405 hard cast flat nose.)
My concern is the strength of the Lefever. I have no idea what pressures they were built to handle. 12,000 psi seems high to me, but I could be wrong.
The problem I have at the moment, is that every thing I can find focuses on the damascus barrels. With the inserts, they are no long a factor, so my focus is on the breech.
I believe that the breech will hold up to cowboy loaded 45-70's. I am just looking for some more proof.
Pete
