.300 HAM'R

Introduced by Wilson Combat in 2018, the .300 HAM’R is a modern centerfire rifle cartridge designed to deliver exceptional ballistic performance in the AR-15 platform. This innovative round was developed by Bill Wilson as a direct response to the ever-increasing demand for cartridges that could push hard-hitting bullets at higher velocities while still fitting within the AR-15’s magazine constraints. Drawing inspiration from the legendary .30-30 Winchester, the .300 HAM’R was engineered to maximize case capacity and powder column efficiency while utilizing .308" diameter projectiles. It effectively bridges the gap between the 5.56 NATO and more powerful AR-15 cartridges like the .300 Blackout, offering greater downrange energy and versatility for hunters, sport shooters, and reloaders searching for enhanced performance.

For ammunition reloaders, the .300 HAM’R provides a compelling balance of power, accuracy, and adaptability. Its design allows much easier reloading compared to specialized wildcat cartridges, given that it utilizes standard .308 bullets and is compatible with readily available AR-15 bolts and magazines. The cartridge is straightforward to reload and has quickly gained a loyal following among enthusiasts who appreciate its consistent performance and broad bullet compatibility. Its moderate case pressures contribute to extended brass life, another crucial attribute valued by reloaders seeking reliability and longevity in their handloads.

The .300 HAM’R truly shines in the field, where its superior ballistics make it an excellent choice for medium-sized game hunting. Its effectiveness rivals that of more traditional hunting rounds like the .30-30 Winchester or 7.62x39mm, making it ideal for deer, hogs, coyotes, and similar species. The cartridge delivers impressive terminal energy and expansion, making humane, ethical kills possible within practical hunting ranges. Many hunters have reported excellent results using bonded or controlled-expansion bullets for expansion and penetration on game, while reloaders can experiment with varying bullet designs to best match their specific hunting needs.

Targets suitable for the .300 HAM’R span from varmint and predator control up to deer-size game, depending on the bullet selected. For varmints and predators like coyotes or bobcats, lighter, fast-expanding bullets can be handloaded for maximum shock and minimal pelt damage. For larger game such as deer or wild hogs, heavier soft-point, bonded, or monolithic bullets provide deeper penetration and consistent expansion. Owing to the cartridge’s flat trajectory and retained energy, it has quickly become a favorite among hunters and sport shooters looking for a hard-hitting round that remains controllable in a lightweight AR-15 platform.

Regarding bullet weights, the .300 HAM’R is optimized for projectiles in the 110-150 grain range, though it can accommodate both lighter and slightly heavier bullets as well. Factory loads and reloading recipes cover everything from light, supersonic varmint loads, such as 110-grain V-MAX, to 150-grain soft-points intended for larger game. Typical muzzle velocities vary from about 2,300 to over 2,600 feet per second, depending on bullet weight and loading. The cartridge maintains excellent accuracy and manageable recoil, allowing rapid follow-up shots—attributes that appeal greatly to reloaders and hunters alike. With robust case design, widespread component availability, and flexibility in bullet choice, the .300 HAM’R stands out as a versatile, reloader-friendly caliber perfect for those seeking performance and adaptability in their AR-15 rifles.