Originally Posted by
Blackpowdersmoke
I believe you're correct Lee...
I think they were developed during the heyday of mass production of T/C's sidelocks and other companies repo Hawken style rifles of which most had a midrange twist.
BPS
I have shot them in my 50 cal Hot Rods and they did okay but I only tested them to 100 yards. The groups I got were between 3" and 4" with peep sights.
I wanted a bullet that was a little more accurate. If I had to use them I would be okay with it but I would not push them much past 100 in my guns.