Wow Mickey, that is a hell of a lot of zebra!! I assume you were doing some pretty intensive culling, which country?
By the way, what speed were you sending those X bullets at? Saeed at accuratereloading always uses them but always at very high speeds, which must cause more expansion. I do not doubt that when fired from a non-magnum at distance, they will only give half the wound channel of a traditional lead cored bullet.