I have a newish 22-inch 6 BR set up like a sporter, but it's a bolt action single shot. Brux #3 barrel, McM Rem Classic stock, Stiller Pred action.
I've been shooting 95 Sierra Matchkings so far, but I haven't chrono'd them yet.
The 6 BR Lapua brass is very good, much tighter tolerances than the 30-06 Lapua brass I've had. I think something like 99/100 cases had neck thickness variation less than 0.001 inches.
I think the Montana would be an angelic platform for a 6 BR, if it would feed reliably. My rifle, even as a single shot, doesn't extract or eject cases with authority. No biggie for me, it's a rifle intended to shoot at steel and targets, not animals. But if I think I could need feeding to work, I'm carrying my 30-06.
