The 458 uses standard 223 mags. I am itching to hunt hogs with it, I think it would be perfect for that!!
It booms and kicks like a crazy thang - just a hoot to shoot. Recoil is about the same as a 20 gauge, gotta really lean into it
. Makes big holes in anything you shoot. Sends 300 grains downrange at around 2000fps!
Can be a little pricey to reload. Likes the spire pointed bullets the best for feeding. I've also loaded 350 grain round nose soft points and those work pretty good too.