Custom Ammunition

The Science of Consistency

Off-the-shelf ammunition is built to fit every rifle within SAAMI specs. Our custom ammunition is developed to fit ONE rifle perfectly—yours. We treat load development as an exact science.

By controlling every variable—from brass sorting by weight and volume, to exact powder charges measured to the kernel, to precise bullet seating depth relative to your rifling lands—we eliminate the inconsistencies that cause groups to open up downrange.

• Premium brass prep: annealing, uniforming, and sorting
• Powder charges weighed to 0.02 grain accuracy
• Bullet sorting by base-to-ogive and weight
• Custom seating depth optimization (CBTO)
• Comprehensive chronograph data and DOPE provided

Barrel Profiling

We measure your exact chamber dimensions and throat erosion to determine the optimal bullet seating depth.

Velocity Nodes

We conduct ladder tests over a precision chronograph to find the most stable velocity nodes for your barrel harmonics.

Production Runs

Once the perfect load is established, we can produce that exact recipe in volume for your upcoming matches or hunts.

Who Custom Ammo Is Built For

Custom ammunition isn't a one-size-fits-all product. It is a load-development process built around one rifle at a time for shooters who want dependable, repeatable performance from a specific firearm. To learn more about how custom rifle load development works, Precise Arms works with clients whose goals go beyond what factory ammunition delivers for their rifle.

That often includes precision rifle shooters who want consistent accuracy at distance, hunters who want a load matched to their rifle and intended conditions, and competitors who need repeatable results from one match or season to the next. If you are building or already shooting a custom precision rifle, custom ammo developed for that firearm is an important part of getting the most from it.

Precise Arms is a boutique shop, not a large-scale manufacturer. Custom ammunition is developed and evaluated individually for your rifle, chamber, and goals — not produced in volume as a general-purpose factory load. Every project is discussed first through a consultation to confirm whether load development is the right fit and what the next step should be.

Before getting started, you can also read our guide to preparing for a custom rifle ammunition consultation to understand what information is helpful to discuss.