Starline 450 Bushmaster Brass 50 Pack

The 450 Bushmaster was designed as a close-range, big-bore hunting calibre for the AR-15 platform. As with most AR cartridge conversions, it only requires swapping out the upper receiver. With the introduction of some new bolt-action rifles in this calibre and many states changing game laws allowing straight-wall cartridges for deer hunting, the .450 Bushmaster is enjoying a surge in popularity.

Ruger now offers their American Ranch and Gunsite Scout bolt-action rifles chambered in the .450 Bushmaster calibre. This cartridge utilizes the common .452" diameter bullet; reloaders can use bullet weights anywhere from 160–350+ grains.