Thanks for that info, John.
I already fixed the mag to accommodate longer rounds. I removed the plastic spacer, cut around .1" off the back side, reinstalled it, drilling new holes for the two pins that anchor that part in the mag body.
I JB Welded a spacer to the follower to make it work. After consultations with James Calhoon, I narrowed the mag spring, as it was too strong. I got one of James' single shot adapters and use that at the range, saving the mag for hunting.
DF