Load Specifications
Load data in caliber .300 HAM'R with .308 | 165gr | Brenneke TOG bullet and 27 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Accurate 1680 and IMR 4227.
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 1680 | <<locked>> | 96% | 49,530 psi | 86% | 1841 fps | 99.2% |
| Accurate 5744 | <<locked>> | 82% | 50,459 psi | 88% | 1850 fps | 99.8% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 47,166 psi | 82% | 1804 fps | 96.8% |
| Accurate No. 11 FS | <<locked>> | 84% | 48,805 psi | 85% | 1811 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 51,039 psi | 89% | 1772 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 45,890 psi | 80% | 1860 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 36,593 psi | 64% | 1772 fps | 97.4% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 48,965 psi | 85% | 1873 fps | 99.6% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 43,990 psi | 77% | 1791 fps | 96.3% |
| Hodgdon H4198 | <<locked>> | 98% | 49,269 psi | 86% | 1834 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,572 psi | 48% | 1073 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 41,640 psi | 72% | 1788 fps | 99% |
| IMR 4227 | <<locked>> | 94% | 49,763 psi | 87% | 1831 fps | 100% |
| Lovex D060 | <<locked>> | 88% | 51,343 psi | 89% | 1860 fps | 99.8% |
| Lovex D063 | <<locked>> | 84% | 50,691 psi | 88% | 1847 fps | 99.8% |
| Lovex S053 | <<locked>> | 96% | 49,429 psi | 86% | 1821 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 40,799 psi | 71% | 1827 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,947 psi | 45% | 1089 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 51,097 psi | 89% | 1880 fps | 100% |
| Shooters World Blackout | <<locked>> | 84% | 50,691 psi | 88% | 1847 fps | 99.8% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 51,343 psi | 89% | 1860 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 88% | 51,793 psi | 90% | 1847 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 50,314 psi | 88% | 1722 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 39,160 psi | 68% | 1781 fps | 95.7% |
| Vihtavuori N110 | <<locked>> | 92% | 52,025 psi | 90% | 1785 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 46,383 psi | 81% | 1834 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 35,781 psi | 62% | 1713 fps | 96.7% |
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 | 16.8 gr | 84% | 31,894 psi | 55% | 1617 fps | 95.6% |
| Accurate 5744 | <<locked>> | 80% | 47,065 psi | 82% | 1814 fps | 99.5% |
| Accurate LT-30 | <<locked>> | 96% | 40,886 psi | 71% | 1729 fps | 95.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 42,206 psi | 73% | 1742 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 38,972 psi | 68% | 1644 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 22,524 psi | 39% | 1506 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 94% | 29,515 psi | 51% | 1657 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 84% | 27,847 psi | 48% | 1581 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 41,104 psi | 71% | 1755 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 94% | 43,497 psi | 76% | 1768 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,218 psi | 33% | 948 fps | 100% |
| IMR 4198 | <<locked>> | 88% | 28,413 psi | 49% | 1581 fps | 95.3% |
| IMR 4227 | 14 gr | 80% | 31,024 psi | 54% | 1591 fps | 98% |
| Lovex D060 | <<locked>> | 80% | 39,378 psi | 68% | 1716 fps | 98.5% |
| Lovex D063 | <<locked>> | 80% | 43,888 psi | 76% | 1772 fps | 99.2% |
| Lovex S053 | <<locked>> | 80% | 29,849 psi | 52% | 1578 fps | 99.8% |
| Norma 200 | <<locked>> | 90% | 27,992 psi | 49% | 1634 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,927 psi | 31% | 965 fps | 100% |
| ReloadSwiss RS 36 | 14.9 gr | 80% | 29,370 psi | 51% | 1598 fps | 97.4% |
| Shooters World Blackout | <<locked>> | 80% | 43,888 psi | 76% | 1772 fps | 99.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 39,378 psi | 68% | 1716 fps | 98.5% |
| Shooters World SOCOM | <<locked>> | 80% | 38,827 psi | 68% | 1699 fps | 98.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 28,181 psi | 49% | 1473 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 37,057 psi | 64% | 1752 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 35,056 psi | 61% | 1611 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 23,090 psi | 40% | 1499 fps | 97.7% |
| Vihtavuori N130 | <<locked>> | 96% | 31,343 psi | 55% | 1644 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 27 powders for .300 HAM'R loaded with the .308 | 165gr | Brenneke TOG. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,880 fps; across all powders the maximum-charge window runs from 1,073 fps to 1,880 fps. Accurate LT-30 gives the best case fill at 100 %, and 27 of the 27 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (396 MPa), the top charges use 45–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate LT-30, ADI AR 2207, Alliant Reloder-10x 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. ReloadSwiss RS 36, Accurate 1680, IMR 4227 rank at the top here: for .300 HAM'R with the .308 | 165gr | Brenneke TOG 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.