I think it's a checkmate mag because there is a little "c" on the base of the magazine, top right corner. The patent numbers don't help me because based on pictures the hybrid and wadcutters have the same patent number written on them.
Remember this when you support the labeling and tracking of people and the complete digital takeover of commerce:
"It causes all, both small and great, both rich and poor, both free and slave, to be marked on the right hand of the forehead so that no one can buy or sell unless he has the mark, that is, the name of the beast or the number of its name" Revelations
"So you say your prayers and you thank the lord, for that peace maker in the dresser drawer"