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.300 HAM'R Load Data

Alternative names: .300 HAM'R does not have widely recognized alternative names or designations. It is primarily referred to as .300 HAM'R.

Our load data for caliber .300 HAM'R covers 329 bullets from 37 manufacturers and a total of 20727 load recipes. In addition, our members have shared 1 load recipes.

The .300 HAM'R is a .30 caliber cartridge developed by Wilson Combat, optimized for the AR-15 platform. It was introduced as a superior alternative to the .300 Blackout, offering increased velocity, energy, and range while maintaining compatibility with standard AR-15 components (except for the barrel).

The .300 HAM'R is based on the .223 Remington case, but it is lengthened and necked up to accommodate .30-caliber bullets. It typically fires 110-150 grain bullets with velocities reaching 2,600 fps (feet per second), delivering 30-30 Winchester-level performance in an AR-15 rifle.

This round is particularly effective for hunting medium-sized game (like deer and hogs) due to its higher impact energy compared to the .300 Blackout. It also offers better ballistic performance and longer effective range, making it suitable for defensive and tactical applications.

In terms of availability, Wilson Combat produces rifles, barrels, and ammunition specifically for the .300 HAM'R, but reloading components are widely available for custom loads. Overall, the .300 HAM'R is a highly capable cartridge that maximizes the potential of the AR-15 platform for hunting and self-defense.

Suitable Powders

Bullet Weight (gr) ->
0-50
50-75
75-100
100-150
150-200
200-300
>300

👍 ... suitable powder 

👍👍 ... suitable AND popular powder among our reloading community  (clasification might evolve as more community members share their loads )

Caliber Specifications

Standard / Datasheet

SAAMI

Primer Size

Small Rifle (SR)

Max. Case Length

29.6 Grains of Water

Bullet / Barrel Diameter

0.308'' | 7.82 mm

Max. Case Length

1.615'' | 41.02 mm

Max. Cartridge Length 

2.26'' | 57.4 mm

Max. Standardized Pressure:

60916 psi | 4200 bar

XXL ID

CID_356

.300 HAM'R load data is available with the following bullets:

(most popular first)

Filter by Bullet Weight (Grains)

Weight vs. Velocity - Suitable Bullets for this Caliber

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not sufficient data yet!

Barrel Length  Variation vs. Velocity - by Bullet Weight

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not sufficient data yet!

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