My thought is (and I may be wrong) that the 350 would probably perform about like the .357 Max.I am curious as to why you want the 45-70 over the 350 legend? I don’t much about either one, trying to educate myself.
I'm just looking for something with more knockdown power.
This buck isn't the first questionable outcome I've had with this gun. Last year I took a shot at a deer, and it just ran off. I went to where it was standing and found no traces of blood at all. Now I may have simply missed it, but I don't think so. So I've spent a year wondering if I wounded a deer but the round didn't produce the blood/knockdown effect. I don't know, but the doubt is there.