All of our 300 HAM'R ammunition velocities are listed from an 18" barrel. The velocity rises and falls at an average of approximately 25-35 ft per second per inch.

Twist Rate Overview:

1-13:

Recommended for 150gr loads and for use in extremely cold conditions.

1-15:

Shoots all bullet weights from 95gr to 150gr well, however at extremely cold temperatures of below zero some longer 150gr bullets may become unstable. It is optimal for 95gr-135gr bullets.

Which loads should be used for best accuracy for range use target shooting?

All of the following have proven to be very accurate: Speer 125gr TNT, Sierra 125gr SBT, Hornady 125gr FMJ and 135gr Hornady FTX, however the Sierra 125gr SBT in our testing shot well in all barrels and we consider it the best all around load for accuracy.

Which loads are recommended for best terminal performance for hunting?

For big hogs, black bear, mule deer or any tougher game: Speer 130gr HAM'R HOT-COR, Speer 135gr HAM'R Bonded, Hornady 135gr FTX or any of the 150gr loads

For whitetail deer or soft skinned game: Lehigh 110gr CC, Sierra 125gr PH, Speer 130gr HAM'R HOT-COR, Sierra 135gr HP-V or Hornady 135gr FTX

For varmint/predator hunting: Lehigh 95gr CC, Hornady 110gr SP, Speer 110gr SP, Lehigh 110gr CC, Speer 125gr TNT or Sierra 125gr SBT PH

Which loads are recommended for home/ranch defense?

Hornady 110gr SP, Lehigh 110gr CC, Sierra 125gr SBT PH, Speer 125gr TNT, Speer 130gr HAM'R HOT-COR, Sierra 135gr HP-V or Hornady 135gr FTX

What primers do you recommend for reloading 300 HAM'R ammunition?

We recommend CCI450, Federal GM205MAR or CCI41

What powders are suitable for reloading the 300 HAM'R?

For maximum velocity and best accuracy Hodgdon CFEBLK is recommended, but good performing loads can be produced with Accurate 1680, IMR 4227, Vihtavuori N120 or Shooters World BLACKOUT. Shooters World SOCOM is suitable for 95gr and some 110gr loads.

What magazines are recommended for the 300 HAM'R?

Any magazine designed for the 300 BLACKOUT from the following manufacturers: Lancer, D&H, MagPul or Wilson Combat

Ammo Applications:

95gr Lehigh CC (highest velocity for the cartridge, explosive terminal performance)

110gr Lehigh CC #05-308-110-CUSP (our sister company Lehigh Defense designed this bullet specifically for the 300 HAM’R to provide extreme accuracy and deadly terminal performance)

110gr Hornady SP (good all around 110gr bullet)

110gr Speer SP (tougher than the Hornady due to HOT CORE construction)

110gr Hornady V-MAX (accurate and explosive varmint or low penetration choice)

125gr Sierra SPT PH (extremely accurate, great all around bullet)

125gr Hornady FMJ #30196 (range and target)

125gr Speer TNT (good range and varmint bullet)

130gr HAM’R HOT-COR (solid accuracy and proven terminal performance)

135gr HAM’R BONDED (great all around bullet)

135gr Hornady FTX (great all around bullet and possibly the best choice for whitetail deer)

Sierra 135gr HP-V (very accurate in most barrels and extreme terminal performance)

150gr Hornady SST #30303 (for the largest game the cartridge is suitable for)

150gr Speer BTSP #2022 (great all around bullet with a high BC)

150gr HAM’R BONDED (for the largest game the cartridge is suitable for)

Reloading Data can be found here:

https://www.wilsoncombat.com/300-hamr/

Cutting spent .223 casings - Trim to 1.595"