HSM Cowboy Action ammunition in .38-55 Winchester (brand part no. 38551N) is built for Cowboy Action Shooting competitors who need period-correct velocity. HSM manufactures this load to consistent tolerances, so every box performs the same as the last. At the heart of this load is the 240 gr bullet with a round nose flat point design, matched to the .38-55 Winchester platform shooters already run. In our rifle ammunition lineup, this is the HSM load built for that job.

Key Specifications

• The chambering is .38-55 Winchester, a classic chambering still supported decades after the rifles that made it famous.
• The bullet weighs 240 gr, sized for the terminal performance this load is built around.
• The projectile is a Round Nose Flat Point design, a proven profile with a long track record in the field.
• The case is Brass, standing up to repeated firing and easy extraction.
• Each box holds 20 rounds, a practical quantity for a solid range session without restocking mid-way.
• Cases ship 25 boxes to a case, letting range regulars order in volume without repeat checkout.
• Cost works out to about $1.73 per round, a reasonable cost for this level of quality.
• The box ships at approximately 1.30 lbs, useful for budgeting freight if you’re ordering by the case.
• This is a centerfire cartridge, ignited by a replaceable primer rather than a rimfire priming ring.
• HSM loads this Cowboy Action round to traditional lead-bullet velocities, matched to the era-correct performance Cowboy Action Shooting competitors expect.
• HSM’s Cowboy line is loaded to the lower pressures and traditional bullet profile the sport’s competition rules call for.

Frequently Asked Questions

Is this load good for practice and range training? Yes, this is a .38-55 Winchester load built for affordable, high-volume range training rather than hunting or defense.

How many rounds come in a box? Each box holds 20 rounds of .38-55 Winchester.

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 Cowboy Action .38-55 Winchester 240 gr Round Nose Flat Point, 20-Round Box

Whether it’s a weekend at the range or opening morning, this is the load that shows up and does its job. Order from our Lubbock, Texas gun shop and it ships fast to your door.