HSM Match ammunition in .300 AAC Blackout (brand part no. 300BLK1N) is a match-oriented load engineered for consistent groups at extended distance. HSM backs this load with the quality control shooters expect from a name they already trust. At the heart of this load is the 208 gr bullet with a a-max design, matched to the .300 AAC Blackout platform shooters already run. In our rifle ammunition lineup, this is the HSM load built for that job.

Key Specifications

• The chambering is .300 AAC Blackout, a caliber built around accuracy over speed.
• The bullet weighs 208 gr, sized for the terminal performance this load is built around.
• The projectile is a A-Max design, built for the repeatable accuracy competition requires.
• The case is Brass, the standard for reliable extraction and smooth reloading.
• Each box holds 20 rounds, enough to work with before needing to reorder.
• Cases ship 25 boxes to a case, a useful case size for stocking a range or defensive supply.
• Cost works out to about $1.53 per round, affordable enough to shoot as much as you train.
• This is a centerfire cartridge, ignited by a replaceable primer rather than a rimfire priming ring.
• The Hornady A-Max bullet’s boat-tail profile and high ballistic coefficient hold velocity and resist wind drift at extended range, a favorite among long-range 300 Blackout shooters.
• HSM loads this Match line in smaller batches than mass-market ammunition, prioritizing consistency for long-range 300 Blackout shooters.

Frequently Asked Questions

How many rounds come in a box? Each box holds 20 rounds of .300 AAC Blackout.

Is the brass reloadable? The case is brass, which handloaders can typically resize and reload for repeat use.

Can I order this by the case? Yes, this load ships 25 boxes to a case for shooters who want to order in bulk.

Buy the HSM Match .300 AAC Blackout 208 gr A-Max, 20-Round Box

Grab a case if you shoot it regularly, or a box to see how it patterns and cycles through your gun first. Order from our Lubbock, Texas gun shop and it ships fast to your door.