45-70 data:

http://www.gmdr.com/lever/lowveldata.htm

45LC data (45LC Henry):

405g .458 lead hard cast, flat nose, powder coated, swaged to .452 with Lee swag:

OAL - 1.645"
9.6g BluDot
Std primer
3/4 crimp (LFC die)
~1010 fps

Usual precautions.