KciH,
Although I don't have a lever action 41 mag (doesn't mean I don't want one), I have found that the microgroove barrels are excellent cast bullet shooters once you have found the proper load. My microgroove 30-30 will print 5 round groups at 100 yards under 1" all day long. Don't let the microgroove aspect of the 41 lever scare you off. Just be prepared to experiment A LOT! If you like to shoot, that can be a plus...
The Blade