Here a is a link to a thread on a site all about optics might be useful:
http://www.opticstalk.com/hr-45-70-h...opic11841.html
I'd agree on the lower power ones considering the ideal range on the round I think a 10 power is a bit high
depends on how far away you plan on being from the game I suppose.I'd think a scope designed for use with a
slug gun would take the abuse that 45-70 can dish out.