Kicking around the idea of a LH Mesa 450 Bushmaster. Was wanting a stainless LH bolt action 450, and came to a dead end trying to get Ruger or their exclusive 450 dealer here in Michigan to get the ball rolling.
Other option would be a LH Tikka short action and make it a donor for rebarrel. That probably would still be less than the Mesa though. Especially if I can find a used one a bit cheaper.