Dave
Something you might think about....
I am a big fan of the 45/70....

However, I have found that a 9,3x74R double is one of the best, if not THE best hunting rifle on the Planet, especially if scoped.

Research my previous posts here and on Accuratereloading.

I have been using a Chapuis 9,3x74R double for the last several years with PERFECT success in Texas, Montana, Idaho, Canada, and 3 Safaris to Zimbabwe.

I have taken game with ironsights and scope.
From beaver and bobcat to cape buff and elephant, it does the job.

Think about it.