you'll be using everything but the 45-70 case in either one.
A retired fella at a show once offered me a ridiculous deal on a very nicely done, conservative custom 98 in 458W.
We talked Mausers and he suddenly got all serious and just cut the price about in half and offered it for $350 just to get it into hands of someone who understood what he had and would take care of it. It had been to Africa and he just wasn't up to that any more. I passed, as much as I hated to and I felt bad doing it because it was like he was trying to find a home for a favorite dog, which he could no longer care for.
On the two-hour drive home, it hit me - I'M AN IDIOT! I even said it out loud.
My dad looked at me like I really was an idiot and said "WHAT??"
I could have loaded it to 45-70 levels, using cast!
It was the nicest custom Mauser I'd ever had my hands on personally and I think I'd probably still be using it today, if I hadn't had my head up my butt THAT day. I still feel badly for walking away and leaving the guy to find someone to take care of his old friend too.
I started a 450 Marlin custom 98 once too, but brass dried up as did my enthusiasm and the project died.
A famous author, whose name escapes me at present, said:I was at a Phoenix show 30 years back. Was looking for a caliber .50 rifle or carbine. Nice older feller showed me a well carried 50-70. Ratty wood and pitted outside. But a great bore. "$175 young feller".
Well I said "let me ponder this". Off I went, got side tracked and off went the Sharps 1874....
"Strike while the iron is hot".