A while back I bought a Navy Arms/Gibbs Summit rifle in .45-70. For those unflamilar, the Summit rifle is a Lee Enfield sportered to chamber the .45-70. Great rifles that shoot pretty well and make good brush guns. Well, I had this thing for a year and never shot it so I traded it to my brother, who traded it to my other brother. Well he took it and had the chamber opened to .45-90. Well, he decided he wants to put a low powered scope on it. He doesn't want to drill the action for a mount but my concern is if there's a no drill mount out there that will withstand the .45-90? What do you guys think?