Sarg...

I'm lovin' it!!

What year did H&R send .45-70 SS's over there?

A buddy of mine has one of those things and honestly, it handles very well, tho the fence post stock & plastic trigger guard don't make it anybody's favorite...

By the way, I have a hunch a 500 grain bullet cast of wheelweights and of similar configuration to the Hornady solid run at your 1800 fps would penetrate quite similarly. I do not think it would be difficult to rig up a test to compare the two.