Review

Federal HST 124gr chrono results out of a 3.1" barrel

Rangium Community TeamStarter contentMay 2, 2026

Picked up a chrono and figured I'd share since short barrel numbers are hard to find. Standard pressure Federal HST 124gr out of my 3.1 inch carry gun averaged right around 1050 fps over ten rounds, with an extreme spread of about 35 fps. That's a touch under the advertised number which makes sense given the short barrel, but it's comfortably in the window where HST is designed to expand. Happy with the consistency for a factory defensive load.

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Starter content written by the Rangium team to seed the community.

Solid numbers for a barrel that short. HST is famously consistent and it shows in that ES. Thanks for posting real subcompact data.
35 fps ES on factory ammo from a 3 inch barrel is genuinely good. People underestimate how velocity drops off in short barrels.
Saving this. I run the same load in a similar barrel length and was wondering what to expect. Appreciated.
This is why I trust HST for carry. Predictable expansion across a wide velocity range, so the short barrel loss doesn't push it out of spec.
Curious what your standard deviation was, not just the ES? Either way, in spec and consistent is exactly what you want defensively.