Processing... Please wait...

Product was successfully added to your shopping cart.

Quiet Perfection: Gemtech Subsonic .22 LR Ammo

Quiet Perfection: Gemtech Subsonic .22 LR Ammo

Over the past few years I have been searching for the best subsonic .22 ammunition for use with a suppressor across multiple firearm platforms. Finally, I’ve found a round that held up to all of my requirements and delivered consistent impressive performance. That round is the Gemtech Silencer Subsonic 22 LR. Manufactured by CCI in partnership with Gemtech, this ammo was specifically designed for use with suppressors. It uses clean powder, a heavier 42 grain bullet, and special lubrication on the projectile. The end result is the perfect combination of excellent and reliable performance at subsonic signatures.

Test criteria:

  1. Subsonic signature across multiple barrel lengths
  2. Ability to cycle across numerous firearm platforms
  3. Consistent performance and reliability through multiple suppressors
  4. No baffle strikes

Firearms used in testing:

  • Walther P22
  • Sig Sauer Mosquito
  • IWI Uzi Pistol
  • Magnum Research MLR22AT

Suppressors used in testing:

  • Silencerco Sparrow 22
  • Gemtech Outback II


1. Muzzle Velocity:
One of the biggest problems with many .22 rounds marketed as “subsonic” is their performance. Remember that in order to obtain subsonic sound signatures and avoid ballistic crack, the speed of the projectile must be ratcheted back below 1,100 feet/second. This is typically accomplished by using a heavier bullet together with some powder modification, each of which can result in performance issues. If the bullet isn’t heavy enough, it can become transonic or supersonic when fired out of a longer barrel. If the bullet is too heavy, you can end up with baffle strikes or instability in flight (a problem I encountered with the 60 grain Aguila SSS Sniper SubSonic .22 ammo). If the powder mixture isn’t perfect, you can have a round that fails to fully cycle the firearm (a common problem with many subsonic .22 rounds). Luckily, Gemtech and CCI seem to have found the perfect mixture. Their 42 grain .22 LR bullet runs fairly consistent short barrel velocities of 1020 fps and is advertised to run at 1050 fps through a 24” barrel.

2. Performance:
Not only did the Gemtech Silencer Subsonic ammunition reliably cycle every suppressed firearm that I fed it through, but it did so with effortless consistency. There were no baffle strikes, and it delivered solid accurate hits on paper without any evidence of yawing or instability in flight.

With excellent performance and consistent reliable cycling across numerous platforms, the Gemtech Silencer Subsonic 22 LR has proven to be the best subsonic .22 round that we have tested. If you have a suppressed .22 and are looking for the right subsonic ammo, I highly recommend this round.

Get Gemtech Subsonic .22 LR at iammo.com today!

Leave a Reply