Winchester factory 300 grain HP bullets at 1875 ft/sec penetrated three steel gas drums, and tore the first side of a fourth for me. The jacket and lead separated on impact with the fourth. I was impressed. But like sharpsguy, I think the shine on the 45-70 is with a slower bullet. My 1895 seems to like either a 350 or 405 bullet around 1500 to 1600 ft/sec. Slower would work just as well.
