Get into the BPCR realm and those folks do amazing things with 45-70's out to a 1000+ yds. That being, they can be a long range unit, but one must make a science out of things to be effective way out there. Iron sights and a precise sight picture are a cinch with nice black and white concentric circles and double aperture sights. Going to extreme ranges on game would probably be better done with good glass on top and a rangefinder in hand. There are scopes and mounts suitable for working at extreme ranges.
I believe it's the August 2007 issue of Reloader that has a wonderful article with pressure data for many many bullet/powder combinations. The author of that article accidently took out two water buffs with a single round from one of his Marlins. A phone call to the publisher and $10 can get you a copy of the magazine.
Again, a neat cartridge that I'd like to drop an elk with.
I'm also tuning up a 45-90 Sharps running a 540 grain slug ahead of black powder, but may need some help to pack that one through the woods after game.
Last edited by 1minute; 03/15/10.
