#40caliber

So you want an AR-15 for hog hunting that can launch .40 cal (10mm) pills? This wildcat caliber might be what you are looking for. It is called .400AR and was developed for hog hunting. The designers had initial requirements to have the largest caliber that will allow having double stack loaded ammunition in magazines fitting into the AR-15 magazine well. They also wanted to have at least 2,000 ft-lbs (2,712 joules) of muzzle energy and be able to use one of common cartridge head sizes which would allow using an off-the-shelf AR-15 bolt.

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