The .450 Bushmaster is descended from the "Thumper" concept popularized by Jeff Cooper. Cooper was not a fan of the 5.56x45mm NATO round and envisioned a need for a large-bore cartridge in a semi-auto rifle that would provide one-shot kills on big game animals at 250 yards. Bushmaster Firearms worked closely with Hornady and the .450 Bushmaster “Thumper” was born.
I’ve spent most of the year shooting the BCM AR pistol, monkeying with different holds and techniques and generally seeing what the gun could do. I compared it head-to-head with a new, box-stock Glock 17 across pages of pistol drills. I stretched it out to carbine applications and compared it to a ROBAR PolymAR-15L I’ve been running. After a healthy pile of brass and a stack of data, I’ve got some idea of what it will and won’t do.
I have fired quite a few AR-15 rifles, including both direct impingement and piston driven. Performance has varied, but all piston guns were more expensive than the standard direct-impingement AR-15.
The past seven years or so have seen a strong trend toward 7.62x51mm (.308 Winchester) semiautomatic rifles. Each service has dabbled in a handful of platforms, several federal agencies are issuing them in decent numbers, and the market response has been strong. Most shooters want one and many are convinced they need one. I’m here to throw a mildly wet blanket onto the idea and help sort tactical trendiness from actual capability.
Mendelian Genetics is a fascinating field of study. By carefully manipulating breeding patterns, scientists can produce orange roses, grain that is resistant to blight and foul weather, the fastest horses in all of human history, and carp that will eat the weeds out of my farm pond while remaining unable to reproduce.
I grew up at a time when most every male had seen some military service, and I was treated to numerous tales of life in the service of this country in combat and in peacetime. That exposure, and a strong desire to get out of the city and do something that mattered, led me to enlist in the Marine Corps shortly after my 17th birthday.