You are correct, 1856 fpe it is. That proves to me is that some folks DO read what I post.
However, I didn't say that I was going to use a Snider, even though I DO have two of 'em. My initial question was about the .45-70 Govt, a cartridge that can be shot from a modern multi-round under-lever rifle or carbine.
Your not understanding is not my problem. I've tried to explain, obviously with little success, that back in the real world, outside the UK, many hunters understand the challenge of using a single-shot firearm and the need for exact shot placement with the one shot you have, taken at realistic ranges compatible with the arm that you are shooting. Incidentally, there is not a single animal outside a safari park in this country that stand up after connecting with a Snider bullet, or any other Minié, Pritchett or similar bullet, at 100 yards. Back in the country that seems to offend some people here, a pal of mine took down a 1700 pound American Bison with one shot of his .451 Whitworth rifle, shooting his own 600gr swaged bullet.
In Canada and the US there is a short BP season for game and most BP rifles used are single shot. No doubt the bunny-huggers and bambi-fondlers are running around with their hair on fire at the very thought of it happening here, but they can calm down - it never will.
Having gotten my answers, I'm done here.
Thanks to those who provided me with the answers I sought.
tac