Magtech Tactical/Training .300 Blackout 200gr Full Metal Jacket Subsonic ammunition (brand part no. 300BLKSUBA) is loaded for shooters who run a suppressor and want their host rifle to stay as quiet as the can allows. Magtech builds this round to stay below the speed of sound, pairing a 200-grain full metal jacket bullet with a brass case for smooth, reliable feeding through AR-pattern rifles and bolt guns alike. Because the FMJ bullet does not expand, it feeds consistently magazine after magazine, making it a straightforward choice for training days, suppressor testing, and high-volume range work. Magtech builds this Tactical/Training line to the same quality standard it uses for military and law enforcement contracts.

Key Specifications

• The chambering is .300 AAC Blackout, purpose-built for AR-pattern rifles running a suppressor.
• The bullet weighs 200 grains, a heavy-for-caliber weight suited to subsonic velocities.
• The bullet type is Full Metal Jacket (FMJ), a non-expanding design built for reliable feeding.
• The copper jacket keeps the bullet from deforming in the magazine or on impact, so it cycles the same way shot after shot.
• This load is subsonic, staying below the speed of sound for reduced report through a suppressor.
• Cases are made of brass, giving consistent chambering and extraction.
• Each box holds 50 rounds, cutting down on reloading trips to the range bag.
• The full case ships 1000 rounds across 20 boxes, sized for sustained training sessions.
• Cost runs about 0.82 dollars per round, budget-friendly pricing for high-volume subsonic practice.

Frequently Asked Questions

Is this ammunition subsonic? Yes, Magtech loads this 200-grain FMJ round to stay below the speed of sound for quieter shooting through a suppressor.

Does the FMJ bullet expand on impact? No, full metal jacket bullets are built for reliable feeding and consistent flight, not expansion, making this a training and range round rather than a defensive load.

How many rounds are in a full case? A full case holds 1000 rounds, packaged as 20 boxes of 50.

Buy Magtech .300 Blackout 200gr FMJ Subsonic

Suppressor hosts deserve ammunition that was actually built to run quiet, and this Magtech subsonic load delivers exactly that without breaking the training budget. Stock the range bag for a full day of suppressed practice or load up before a hunt where noise discipline matters. Browse more rifle ammunition and order from our Lubbock, Texas gun shop, where it ships fast to your door.