Gents - I have an H&R Buffalo Classic in 45/70, and am working on loading some 535 grain bullets. I purchased the bullets from one of the members here on Cast Boolits, and asked him for a bit more info on the bullet design.
However, if I use the Lyman data for 535 bullets, they specify an OAL of 2.930". If I seat the bullet to this OAL, the case mouth is in a lube groove. I would need to seat the bullet about .075" deeper to get the case mouth to crimp on the driving band (is that the correct term?).
My concern is, what would seating this deeper do to the pressures involved? I am starting with trap door loads, (starting load would be 36 grains of Reloder 7).
I would appreciate any input you folks could offer.
Thank you.
Tim