???

How can you tell which one is a XTP or XTP mag , which one has two rings on it ??? The ones he used had one ring and came in a box with sabots and said50 cal .45 -300 xtp mags . The box of bulk bullets that i shoot have two rings on the bullet and says .45 cal .452 300 grn hp/xtp# 45230 Which one would be better for a muzzleloader ??

THANKS
Robk.