this discussion is about emotions, if we substituted the 45-70 with say 43 mauser(pretty much same round) then all the guys from the US wouldent have the need to rattel their swords and scream bloody murder all the time.

so the 43 mauser.

it is a black powder round with the possibility to hotrod a lot and even try to blow eachother up,
it has nothing that you cant find in other, better and never calibers that allready is cip proved and there is a standard for.
therefore the 43 mauser is a fun black powder number, that is good enough in itself and there is no reason to try to make it into a nitro express cartrigde.
it will never achive the same class as english NE cartrigdes even if it had the same energy and everything, so dont try to make a silk purse out of a sows ear.
leave the 43 mauser for what it can do and do well which is boar, bears and visent(aka bison, black bear and pigs etc.).

So 43 MAUSER great round leave it alone, or do another round, with it as a bacis, and call it something new like 43 marlin etc

my two cents (euro that is)

peter