Load Specifications
Load data in caliber .300 HAM'R with .308 | 132gr | Brenneke TIG nature bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World Buffalo Rifle, Lovex D060 and Shooters World Blackout.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680ᴾ | <<locked>> | 100% | 47,007 psi | 82% | 2028 fps | 96.5% |
| Accurate 5744 | <<locked>> | 86% | 49,777 psi | 87% | 2070 fps | 98.1% |
| Accurate No. 11 FS | <<locked>> | 90% | 50,357 psi | 88% | 2064 fps | 99.9% |
| ADI AR 2205 | <<locked>> | 92% | 49,501 psi | 86% | 1985 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 36,419 psi | 63% | 1972 fps | 98.3% |
| Hodgdon LilGun | <<locked>> | 86% | 49,763 psi | 87% | 2080 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,048 psi | 44% | 1188 fps | 100% |
| IMR 4227ᴾ | <<locked>> | 100% | 49,966 psi | 87% | 2064 fps | 99.3% |
| Lovex D060 | <<locked>> | 92% | 49,777 psi | 87% | 2070 fps | 98.1% |
| Lovex D063 | <<locked>> | 88% | 49,153 psi | 85% | 2054 fps | 98.1% |
| Lovex S040 | <<locked>> | 86% | 51,619 psi | 90% | 1991 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 46,470 psi | 81% | 2028 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,772 psi | 41% | 1214 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 47,427 psi | 82% | 2073 fps | 98.9% |
| Shooters World Blackout | <<locked>> | 88% | 49,153 psi | 85% | 2054 fps | 98.1% |
| Shooters World Buffalo Rifle | <<locked>> | 92% | 49,777 psi | 87% | 2070 fps | 98.1% |
| Shooters World SOCOM | <<locked>> | 92% | 50,082 psi | 87% | 2054 fps | 98.6% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 42,424 psi | 74% | 1880 fps | 100% |
| Vihtavuori N110 | <<locked>> | 96% | 48,718 psi | 85% | 2001 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 37,072 psi | 64% | 1955 fps | 99.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 96% | 40,611 psi | 71% | 1946 fps | 95% |
| Accurate 5744 | <<locked>> | 80% | 40,408 psi | 70% | 1939 fps | 96.2% |
| Accurate No. 11 FS | <<locked>> | 80% | 35,027 psi | 61% | 1860 fps | 98% |
| ADI AR 2205 | <<locked>> | 80% | 32,692 psi | 57% | 1759 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 92% | 27,847 psi | 48% | 1814 fps | 95.5% |
| Hodgdon LilGun | <<locked>> | 80% | 39,508 psi | 69% | 1965 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,202 psi | 30% | 1050 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 31,966 psi | 56% | 1804 fps | 95.5% |
| Lovex D060 | 15.2 gr | 84% | 38,319 psi | 67% | 1906 fps | 95.6% |
| Lovex D063 | <<locked>> | 80% | 36,825 psi | 64% | 1883 fps | 95.3% |
| Lovex S040 | <<locked>> | 80% | 42,061 psi | 73% | 1886 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 24,018 psi | 42% | 1663 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 15,737 psi | 27% | 1066 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 31,734 psi | 55% | 1841 fps | 95.3% |
| Shooters World Blackout | 16.2 gr | 80% | 36,825 psi | 64% | 1883 fps | 95.3% |
| Shooters World Buffalo Rifle | 15.2 gr | 84% | 38,319 psi | 67% | 1906 fps | 95.6% |
| Shooters World SOCOM | <<locked>> | 82% | 34,925 psi | 61% | 1844 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 22,960 psi | 40% | 1585 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 28,964 psi | 50% | 1739 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 24,497 psi | 43% | 1719 fps | 95.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 20 powders for .300 HAM'R loaded with the .308 | 132gr | Brenneke TIG nature. Hodgdon LilGun delivers the highest muzzle velocity at 2,080 fps; across all powders the maximum-charge window runs from 1,188 fps to 2,080 fps. Accurate 1680 gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (396 MPa), the top charges use 41–90 %, leaving at least 10 % headroom. The 132.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 1680, ADI AR 2207, Hodgdon TrailBoss reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Shooters World Buffalo Rifle, Lovex D060, Shooters World Blackout rank at the top here: for .300 HAM'R with the .308 | 132gr | Brenneke TIG nature they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.