Load Specifications
Load data in caliber .300 HAM'R with .311 | 150gr | Sierra Pro-Hunter bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Shooters World Buffalo Rifle and Lovex D060.
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>> | 98% | 51,387 psi | 89% | 1975 fps | 98.9% |
| Accurate 1680 | <<locked>> | 98% | 51,779 psi | 90% | 1982 fps | 99% |
| Accurate 5744 | <<locked>> | 82% | 49,139 psi | 85% | 1955 fps | 99.3% |
| Accurate 5744 | <<locked>> | 82% | 49,588 psi | 86% | 1962 fps | 99.4% |
| Accurate No. 11 FS | <<locked>> | 86% | 51,039 psi | 89% | 1952 fps | 100% |
| Accurate No. 11 FS | <<locked>> | 86% | 51,503 psi | 90% | 1962 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 49,501 psi | 86% | 1873 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 49,124 psi | 85% | 1870 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 44,773 psi | 78% | 1969 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 44,396 psi | 77% | 1965 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 34,882 psi | 61% | 1854 fps | 96.1% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 35,230 psi | 61% | 1860 fps | 96.2% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 46,746 psi | 81% | 1965 fps | 99% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 47,152 psi | 82% | 1972 fps | 99% |
| Hodgdon H4198ᴾ | <<locked>> | 100% | 50,778 psi | 88% | 1965 fps | 96.1% |
| Hodgdon H4198ᴾ | <<locked>> | 100% | 51,184 psi | 89% | 1975 fps | 96.2% |
| Hodgdon LilGun | <<locked>> | 82% | 51,503 psi | 90% | 1962 fps | 100% |
| Hodgdon LilGun | <<locked>> | 82% | 52,025 psi | 90% | 1969 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,731 psi | 46% | 1135 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,238 psi | 47% | 1145 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 40,422 psi | 70% | 1883 fps | 98.2% |
| IMR 4198ᴾ | <<locked>> | 100% | 40,785 psi | 71% | 1890 fps | 98.3% |
| IMR 4227 | <<locked>> | 96% | 51,314 psi | 89% | 1965 fps | 100% |
| IMR 4227 | <<locked>> | 96% | 51,779 psi | 90% | 1972 fps | 100% |
| Lovex D060 | <<locked>> | 88% | 49,951 psi | 87% | 1965 fps | 99.4% |
| Lovex D060 | <<locked>> | 88% | 50,415 psi | 88% | 1972 fps | 99.5% |
| Lovex D063 | <<locked>> | 84% | 49,516 psi | 86% | 1952 fps | 99.4% |
| Lovex D063 | <<locked>> | 84% | 49,966 psi | 87% | 1959 fps | 99.5% |
| Lovex S040 | <<locked>> | 82% | 51,126 psi | 89% | 1867 fps | 100% |
| Lovex S040 | <<locked>> | 82% | 51,663 psi | 90% | 1873 fps | 100% |
| Lovex S053 | <<locked>> | 98% | 50,836 psi | 88% | 1955 fps | 100% |
| Lovex S053 | <<locked>> | 98% | 51,300 psi | 89% | 1962 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 38,566 psi | 67% | 1909 fps | 97.9% |
| Norma 200ᴾ | <<locked>> | 100% | 38,943 psi | 68% | 1916 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,643 psi | 45% | 1161 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,527 psi | 44% | 1161 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 49,226 psi | 86% | 1982 fps | 99.9% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 49,661 psi | 86% | 1988 fps | 99.9% |
| Shooters World Blackout | <<locked>> | 84% | 49,516 psi | 86% | 1952 fps | 99.4% |
| Shooters World Blackout | <<locked>> | 84% | 49,966 psi | 87% | 1959 fps | 99.5% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 49,951 psi | 87% | 1965 fps | 99.4% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 50,415 psi | 88% | 1972 fps | 99.5% |
| Shooters World SOCOM | <<locked>> | 88% | 50,198 psi | 87% | 1949 fps | 99.7% |
| Shooters World SOCOM | <<locked>> | 88% | 50,633 psi | 88% | 1955 fps | 99.7% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 49,690 psi | 86% | 1834 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 49,342 psi | 86% | 1831 fps | 100% |
| Vihtavuori N110 | <<locked>> | 92% | 50,749 psi | 88% | 1896 fps | 100% |
| Vihtavuori N110 | <<locked>> | 92% | 50,386 psi | 88% | 1893 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 45,281 psi | 79% | 1942 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 44,918 psi | 78% | 1939 fps | 100% |
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>> | 86% | 33,301 psi | 58% | 1739 fps | 95.1% |
| Accurate 1680 | <<locked>> | 86% | 33,620 psi | 58% | 1745 fps | 95.3% |
| Accurate 5744 | <<locked>> | 80% | 45,992 psi | 80% | 1916 fps | 99% |
| Accurate 5744 | <<locked>> | 80% | 46,427 psi | 81% | 1923 fps | 99.1% |
| Accurate No. 11 FS | <<locked>> | 80% | 41,553 psi | 72% | 1847 fps | 99.9% |
| Accurate No. 11 FS | <<locked>> | 80% | 41,263 psi | 72% | 1844 fps | 99.9% |
| ADI AR 2205 | <<locked>> | 80% | 37,666 psi | 66% | 1732 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 38,058 psi | 66% | 1739 fps | 100% |
| ADI AR 2207 | <<locked>> | 82% | 23,757 psi | 41% | 1627 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 82% | 23,598 psi | 41% | 1624 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 98% | 32,996 psi | 57% | 1821 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 98% | 32,735 psi | 57% | 1818 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 88% | 31,096 psi | 54% | 1739 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 88% | 30,864 psi | 54% | 1736 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 98% | 48,283 psi | 84% | 1939 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 98% | 47,877 psi | 83% | 1936 fps | 95.5% |
| Hodgdon LilGun | <<locked>> | 80% | 47,935 psi | 83% | 1929 fps | 100% |
| Hodgdon LilGun | <<locked>> | 80% | 47,587 psi | 83% | 1926 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,913 psi | 33% | 1010 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,840 psi | 33% | 1010 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 31,270 psi | 54% | 1732 fps | 95.5% |
| IMR 4198 | <<locked>> | 92% | 31,589 psi | 55% | 1742 fps | 95.7% |
| IMR 4227 | <<locked>> | 80% | 30,560 psi | 53% | 1683 fps | 97.1% |
| IMR 4227 | <<locked>> | 80% | 30,356 psi | 53% | 1680 fps | 97.1% |
| Lovex D060 | 15.2 gr | 80% | 38,841 psi | 68% | 1814 fps | 97.7% |
| Lovex D060 | 15.2 gr | 80% | 38,580 psi | 67% | 1814 fps | 97.7% |
| Lovex D063 | <<locked>> | 80% | 42,453 psi | 74% | 1867 fps | 98.6% |
| Lovex D063 | <<locked>> | 80% | 42,859 psi | 75% | 1873 fps | 98.6% |
| Lovex S040 | <<locked>> | 80% | 48,486 psi | 84% | 1841 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 48,167 psi | 84% | 1837 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 28,877 psi | 50% | 1660 fps | 99.3% |
| Lovex S053 | <<locked>> | 80% | 28,689 psi | 50% | 1660 fps | 99.2% |
| Norma 200 | <<locked>> | 92% | 29,080 psi | 51% | 1755 fps | 95% |
| Norma 200 | <<locked>> | 94% | 31,125 psi | 54% | 1791 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,564 psi | 31% | 1027 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,477 psi | 30% | 1027 fps | 100% |
| ReloadSwiss RS 36 | 15.9 gr | 80% | 28,558 psi | 50% | 1683 fps | 96.2% |
| ReloadSwiss RS 36 | 15.9 gr | 80% | 28,892 psi | 50% | 1690 fps | 96.4% |
| Shooters World Blackout | <<locked>> | 80% | 42,453 psi | 74% | 1867 fps | 98.6% |
| Shooters World Blackout | <<locked>> | 80% | 42,859 psi | 75% | 1873 fps | 98.6% |
| Shooters World Buffalo Rifle | 15.2 gr | 80% | 38,841 psi | 68% | 1814 fps | 97.7% |
| Shooters World Buffalo Rifle | 15.2 gr | 80% | 38,580 psi | 67% | 1814 fps | 97.7% |
| Shooters World SOCOM | <<locked>> | 80% | 37,536 psi | 65% | 1788 fps | 98.1% |
| Shooters World SOCOM | <<locked>> | 80% | 37,913 psi | 66% | 1795 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,151 psi | 47% | 1558 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,514 psi | 48% | 1565 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,214 psi | 60% | 1706 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,664 psi | 60% | 1716 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 22,553 psi | 39% | 1581 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 80% | 22,408 psi | 39% | 1578 fps | 96.5% |
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 50 powders for .300 HAM'R loaded with the .311 | 150gr | Sierra Pro-Hunter. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,988 fps; across all powders the maximum-charge window runs from 1,135 fps to 1,988 fps. ADI AR 2207 gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (396 MPa), the top charges use 44–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.311" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, 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, Shooters World Buffalo Rifle, Lovex D060 rank at the top here: for .300 HAM'R with the .311 | 150gr | Sierra Pro-Hunter they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, 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.