The HSM 10mm 240gr Subsonic (part no. 10MM17N) pairs 10mm with a 240-grain Subsonic built for concealed carry, home defense, or duty use. HSM builds this load to tight lot-to-lot tolerances so point of impact does not wander box to box. The polymer coating and subsonic load cut bore friction and copper fouling while staying below the sound barrier, keeping report and blowback minimal, particularly with a suppressor. It is one of the handgun ammunition options stocked here, chosen for real-world performance rather than shelf filler. It is a load built to run in the pistols people actually carry and shoot.

Key Specifications

• The caliber is 10mm, a proven chambering with wide pistol and ammunition compatibility.
• The bullet weighs 240 grains, a weight chosen to pair with this cartridge’s typical case capacity and twist rate.
• The bullet is a 240-grain Subsonic, a coated subsonic design.
• The polymer coating and subsonic load cut bore friction and copper fouling while staying below the sound barrier, keeping report and blowback minimal, particularly with a suppressor.
• Each box holds 20 rounds, a practical count for a full range session without constant reloading trips.
• This SKU ships in a 20-box case (400 rounds total), ideal for high-volume shooters, clubs, or instructors stocking up.
• At about $1.45 per round, priced for regular range trips without rationing shots.

Frequently Asked Questions

Is this a subsonic load? Yes, it is loaded to stay below the speed of sound, keeping report and blowback minimal, particularly when fired through a suppressor.

What is this 10mm load built for? With a 240-grain Subsonic, it is built for concealed carry, home defense, or duty use.

How many rounds come in a box? Each box holds 20 rounds.

Buy the HSM 10mm 240gr Subsonic

Whether it rides in a carry gun or feeds a training session, keep the supply stocked. Order from our Lubbock, Texas gun shop and it ships fast to your door.