300 AAC Blackout – 110 gr TTSX – Black Hills (D300WHISPERN4) – 500 Rounds

The 300 Blackout earns its place as a hunting cartridge only with bullets designed to expand at its modest velocities, and the Barnes Tipped TSX is one of the most trusted. This listing is Black Hills 300 AAC Blackout 110 grain Barnes TTSX ammo, MPN D300WHISPERN4, sold as a 500 round case for deer and hog hunters who run short-barreled ARs.

This load is listed at 2,250 fps with 1,237 ft-lbs of muzzle energy. The TTSX is an all-copper bullet with a polymer tip that drives into the hollow cavity to start expansion even at lower impact speeds, then opens into copper petals while keeping nearly all of its weight. The light 110 grain weight keeps velocity high for supersonic 300 BLK, giving a flatter path than heavier loads. This is a hunting load for deer and wild pigs at moderate distances, not a subsonic suppressor round.

This ammunition fits rifles and pistols chambered in 300 AAC Blackout, also called 300 BLK, including AR-15s with 300 BLK barrels, the SIG MCX, Ruger American Ranch, and CZ 527 and 600 rifles in this caliber. A common question is whether 300 Whisper and 300 Blackout are the same. They are closely related, and SAAMI 300 AAC Blackout is the standardized version, while the Black Hills part number simply carries the older Whisper name. Another common question is whether 300 BLK can be mixed up with 223. Yes, it can chamber in a 223 or 5.56 rifle and cause a dangerous failure, so label magazines and keep calibers separated.

Black Hills D300WHISPERN4 is new production ammunition, not reloads, made in Rapid City, South Dakota. Each round uses a reloadable brass case with a boxer primer and non-corrosive priming. This case ships as 25 boxes of 20 rounds for a total of 500 rounds. That supply supports sighting in several rifles and many hunting seasons from one lot.