Load Specifications
Load data in caliber .300 HAM'R with .308 | 180gr | Speer Deep Curl Soft Point bullet and 32 powders. The key underlying parameters are shown in the table above.
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>> | 94% | 48,631 psi | 85% | 1742 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 32,590 psi | 57% | 1621 fps | 95.9% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 49,588 psi | 86% | 1742 fps | 98.1% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 50,299 psi | 87% | 1745 fps | 96.3% |
| Accurate No. 11 FS | <<locked>> | 84% | 51,866 psi | 90% | 1745 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 49,980 psi | 87% | 1670 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 49,632 psi | 86% | 1801 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 45,484 psi | 79% | 1795 fps | 97.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 31,169 psi | 54% | 1637 fps | 97.8% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 39,102 psi | 68% | 1716 fps | 98.7% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 51,880 psi | 90% | 1808 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 46,862 psi | 81% | 1739 fps | 97.8% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 40,640 psi | 71% | 1732 fps | 96% |
| Hodgdon H4198 | <<locked>> | 98% | 51,692 psi | 90% | 1775 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,673 psi | 48% | 1014 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 44,469 psi | 77% | 1732 fps | 99.8% |
| IMR 4227 | <<locked>> | 92% | 49,023 psi | 85% | 1729 fps | 100% |
| Lovex D060 | <<locked>> | 86% | 50,285 psi | 87% | 1759 fps | 100% |
| Lovex D063 | <<locked>> | 82% | 49,995 psi | 87% | 1749 fps | 100% |
| Lovex S053 | <<locked>> | 94% | 48,878 psi | 85% | 1719 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 43,801 psi | 76% | 1768 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 26,847 psi | 47% | 1040 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 50,952 psi | 89% | 1781 fps | 100% |
| Shooters World Blackout | <<locked>> | 82% | 49,995 psi | 87% | 1749 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 50,285 psi | 87% | 1759 fps | 100% |
| Shooters World SOCOM | <<locked>> | 86% | 51,271 psi | 89% | 1749 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 50,314 psi | 88% | 1631 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 45,223 psi | 79% | 1795 fps | 96% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 42,293 psi | 74% | 1736 fps | 97.6% |
| Vihtavuori N110 | <<locked>> | 90% | 51,866 psi | 90% | 1686 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 50,082 psi | 87% | 1775 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 38,769 psi | 67% | 1667 fps | 98.3% |
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 29,327 psi | 51% | 1499 fps | 95.8% |
| Accurate 2015 | <<locked>> | 98% | 30,052 psi | 52% | 1581 fps | 95% |
| Accurate LT-30 | <<locked>> | 92% | 38,464 psi | 67% | 1617 fps | 95.8% |
| Accurate LT-32 | <<locked>> | 98% | 46,818 psi | 81% | 1709 fps | 95.5% |
| Accurate No. 11 FS | <<locked>> | 80% | 44,788 psi | 78% | 1680 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 40,872 psi | 71% | 1581 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 24,685 psi | 43% | 1476 fps | 98.1% |
| ADI AR 2219 | <<locked>> | 96% | 39,146 psi | 68% | 1716 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 94% | 25,193 psi | 44% | 1526 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 90% | 27,876 psi | 48% | 1549 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 25,976 psi | 45% | 1470 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 35,505 psi | 62% | 1601 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 98% | 37,695 psi | 66% | 1696 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 90% | 40,103 psi | 70% | 1644 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,754 psi | 34% | 906 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 26,861 psi | 47% | 1480 fps | 95.8% |
| IMR 4227 | <<locked>> | 80% | 33,388 psi | 58% | 1545 fps | 99.2% |
| Lovex D060 | <<locked>> | 80% | 41,989 psi | 73% | 1663 fps | 99.4% |
| Lovex D063 | <<locked>> | 80% | 46,470 psi | 81% | 1713 fps | 99.8% |
| Lovex S053 | <<locked>> | 80% | 31,575 psi | 55% | 1522 fps | 100% |
| Norma 200 | <<locked>> | 84% | 24,323 psi | 42% | 1486 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 18,536 psi | 32% | 922 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 31,299 psi | 54% | 1549 fps | 98.7% |
| Shooters World Blackout | <<locked>> | 80% | 46,470 psi | 81% | 1713 fps | 99.8% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 41,989 psi | 73% | 1663 fps | 99.4% |
| Shooters World SOCOM | <<locked>> | 80% | 41,162 psi | 72% | 1644 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 29,559 psi | 51% | 1414 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 42,018 psi | 73% | 1755 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 34,360 psi | 60% | 1631 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 37,666 psi | 66% | 1552 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 25,222 psi | 44% | 1467 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 92% | 29,617 psi | 52% | 1539 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 32 powders for .300 HAM'R loaded with the .308 | 180gr | Speer Deep Curl Soft Point. Alliant Reloder-7 delivers the highest muzzle velocity at 1,808 fps; across all powders the maximum-charge window runs from 1,014 fps to 1,808 fps. Accurate 2015 gives the best case fill at 100 %, and 32 of the 32 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (396 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate LT-30, Accurate LT-32 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. 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.