01-01-2014, 05:12 PM
After searching and trying to find out which mag is used with 30 ARX the best information I found was where one tester found a 10 round 7.62 X 39 magazine worked best with one of the similar 30 cal Grendel brass case wildcats. Another advantage of the 300 Blackout is it uses the STANG AR-15 mags.
Other than being 30 caliber I can't see any advantage in performance over the 6.5 Grendel.
Other than being 30 caliber I can't see any advantage in performance over the 6.5 Grendel.

