Load Specifications
Load data in caliber .300 HAM'R with .308 | 135gr | Hornady FTX bullet and 68 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 Accurate No. 11 FS.
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% | 49,153 psi | 85% | 2073 fps | 97.9% |
| Accurate 1680ᴾ | <<locked>> | 100% | 50,517 psi | 88% | 2067 fps | 97.7% |
| Accurate 1680 | <<locked>> | 98% | 49,153 psi | 85% | 2073 fps | 97.9% |
| Accurate 5744 | <<locked>> | 84% | 50,285 psi | 87% | 2096 fps | 98.9% |
| Accurate 5744 | <<locked>> | 84% | 48,936 psi | 85% | 2057 fps | 98.5% |
| Accurate 5744 | <<locked>> | 84% | 50,285 psi | 87% | 2096 fps | 98.9% |
| Accurate No. 11 FS | <<locked>> | 86% | 48,196 psi | 84% | 2051 fps | 100% |
| Accurate No. 11 FS | <<locked>> | 88% | 50,270 psi | 87% | 2057 fps | 100% |
| Accurate No. 11 FS | <<locked>> | 86% | 48,196 psi | 84% | 2051 fps | 100% |
| ADI AR 2205 | <<locked>> | 90% | 50,575 psi | 88% | 2011 fps | 100% |
| ADI AR 2205 | <<locked>> | 92% | 51,909 psi | 90% | 2005 fps | 100% |
| ADI AR 2205 | <<locked>> | 90% | 50,575 psi | 88% | 2011 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,437 psi | 72% | 2054 fps | 99.6% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 39,537 psi | 69% | 2011 fps | 99.2% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,437 psi | 72% | 2054 fps | 99.6% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 44,048 psi | 77% | 2054 fps | 97.8% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 41,655 psi | 72% | 2001 fps | 96.9% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 44,048 psi | 77% | 2054 fps | 97.8% |
| Hodgdon LilGun | <<locked>> | 84% | 51,953 psi | 90% | 2106 fps | 100% |
| Hodgdon LilGun | <<locked>> | 84% | 49,327 psi | 86% | 2064 fps | 100% |
| Hodgdon LilGun | <<locked>> | 84% | 51,953 psi | 90% | 2106 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,281 psi | 46% | 1214 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,846 psi | 45% | 1194 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,281 psi | 46% | 1214 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 38,072 psi | 66% | 1962 fps | 96.6% |
| IMR 4198ᴾ | <<locked>> | 100% | 36,477 psi | 63% | 1916 fps | 95.7% |
| IMR 4198ᴾ | <<locked>> | 100% | 38,072 psi | 66% | 1962 fps | 96.6% |
| IMR 4227 | <<locked>> | 98% | 51,924 psi | 90% | 2100 fps | 99.8% |
| IMR 4227 | <<locked>> | 98% | 49,835 psi | 87% | 2057 fps | 99.6% |
| IMR 4227 | <<locked>> | 98% | 51,924 psi | 90% | 2100 fps | 99.8% |
| Lovex D060 | <<locked>> | 90% | 51,082 psi | 89% | 2103 fps | 99% |
| Lovex D060 | <<locked>> | 90% | 48,936 psi | 85% | 2057 fps | 98.5% |
| Lovex D060 | <<locked>> | 90% | 51,082 psi | 89% | 2103 fps | 99% |
| Lovex D063 | <<locked>> | 86% | 50,111 psi | 87% | 2083 fps | 98.9% |
| Lovex D063 | <<locked>> | 86% | 48,153 psi | 84% | 2041 fps | 98.4% |
| Lovex D063 | <<locked>> | 86% | 50,111 psi | 87% | 2083 fps | 98.9% |
| Lovex S040 | <<locked>> | 82% | 48,907 psi | 85% | 1972 fps | 100% |
| Lovex S040 | <<locked>> | 84% | 50,285 psi | 87% | 1969 fps | 100% |
| Lovex S040 | <<locked>> | 82% | 48,907 psi | 85% | 1972 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 51,256 psi | 89% | 2090 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 49,110 psi | 85% | 2051 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 51,256 psi | 89% | 2090 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 35,810 psi | 62% | 1985 fps | 96.2% |
| Norma 200ᴾ | <<locked>> | 100% | 35,810 psi | 62% | 1985 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,468 psi | 43% | 1230 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,004 psi | 42% | 1211 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,468 psi | 43% | 1230 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 49,937 psi | 87% | 2119 fps | 99.6% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 51,517 psi | 90% | 2116 fps | 99.6% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 49,937 psi | 87% | 2119 fps | 99.6% |
| Shooters World Blackout | <<locked>> | 86% | 50,111 psi | 87% | 2083 fps | 98.9% |
| Shooters World Blackout | <<locked>> | 86% | 48,153 psi | 84% | 2041 fps | 98.4% |
| Shooters World Blackout | <<locked>> | 86% | 50,111 psi | 87% | 2083 fps | 98.9% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 51,082 psi | 89% | 2103 fps | 99% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 48,936 psi | 85% | 2057 fps | 98.5% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 51,082 psi | 89% | 2103 fps | 99% |
| Shooters World SOCOM | <<locked>> | 90% | 51,343 psi | 89% | 2087 fps | 99.4% |
| Shooters World SOCOM | <<locked>> | 90% | 49,647 psi | 86% | 2044 fps | 99% |
| Shooters World SOCOM | <<locked>> | 90% | 51,343 psi | 89% | 2087 fps | 99.4% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 46,717 psi | 81% | 1932 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 45,150 psi | 79% | 1900 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 46,717 psi | 81% | 1932 fps | 100% |
| Vihtavuori N110 | <<locked>> | 94% | 51,169 psi | 89% | 2031 fps | 100% |
| Vihtavuori N110 | <<locked>> | 96% | 51,996 psi | 90% | 2024 fps | 100% |
| Vihtavuori N110 | <<locked>> | 94% | 51,169 psi | 89% | 2031 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,974 psi | 73% | 2031 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 40,103 psi | 70% | 1988 fps | 99.8% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,974 psi | 73% | 2031 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>> | 92% | 39,552 psi | 69% | 1946 fps | 95.9% |
| Accurate 1680 | <<locked>> | 94% | 40,234 psi | 70% | 1936 fps | 95.6% |
| Accurate 1680 | <<locked>> | 92% | 39,552 psi | 69% | 1946 fps | 95.9% |
| Accurate 5744 | <<locked>> | 80% | 44,266 psi | 77% | 2014 fps | 98% |
| Accurate 5744 | <<locked>> | 80% | 42,830 psi | 74% | 1972 fps | 97.4% |
| Accurate 5744 | <<locked>> | 80% | 44,266 psi | 77% | 2014 fps | 98% |
| Accurate No. 11 FS | 17.4 gr | 80% | 38,827 psi | 68% | 1929 fps | 99.3% |
| Accurate No. 11 FS | 17.4 gr | 80% | 37,420 psi | 65% | 1890 fps | 98.9% |
| Accurate No. 11 FS | 17.4 gr | 80% | 38,827 psi | 68% | 1929 fps | 99.3% |
| ADI AR 2205 | <<locked>> | 80% | 36,390 psi | 63% | 1831 fps | 99.8% |
| ADI AR 2205 | <<locked>> | 80% | 34,954 psi | 61% | 1791 fps | 99.5% |
| ADI AR 2205 | <<locked>> | 80% | 36,390 psi | 63% | 1831 fps | 99.8% |
| ADI AR 2207 | <<locked>> | 86% | 25,570 psi | 44% | 1775 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 88% | 25,788 psi | 45% | 1762 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 86% | 25,570 psi | 44% | 1775 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 92% | 33,518 psi | 58% | 1893 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 96% | 36,767 psi | 64% | 1929 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 92% | 33,518 psi | 58% | 1893 fps | 95% |
| Hodgdon LilGun | <<locked>> | 80% | 44,425 psi | 77% | 2024 fps | 100% |
| Hodgdon LilGun | <<locked>> | 80% | 42,612 psi | 74% | 1988 fps | 100% |
| Hodgdon LilGun | <<locked>> | 80% | 44,425 psi | 77% | 2024 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,289 psi | 32% | 1076 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,622 psi | 31% | 1053 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,289 psi | 32% | 1076 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 33,939 psi | 59% | 1890 fps | 95.2% |
| IMR 4198 | <<locked>> | 98% | 34,650 psi | 60% | 1883 fps | 95% |
| IMR 4198 | <<locked>> | 96% | 33,939 psi | 59% | 1890 fps | 95.2% |
| IMR 4227 | <<locked>> | 80% | 28,892 psi | 50% | 1759 fps | 95.4% |
| IMR 4227 | <<locked>> | 82% | 29,588 psi | 51% | 1755 fps | 95.3% |
| IMR 4227 | <<locked>> | 80% | 28,892 psi | 50% | 1759 fps | 95.4% |
| Lovex D060 | 15.8 gr | 80% | 36,985 psi | 64% | 1900 fps | 96.2% |
| Lovex D060 | 15.8 gr | 80% | 35,491 psi | 62% | 1857 fps | 95.4% |
| Lovex D060 | 15.8 gr | 80% | 36,985 psi | 64% | 1900 fps | 96.2% |
| Lovex D063 | <<locked>> | 80% | 40,437 psi | 70% | 1955 fps | 97.3% |
| Lovex D063 | <<locked>> | 80% | 39,131 psi | 68% | 1916 fps | 96.6% |
| Lovex D063 | <<locked>> | 80% | 40,437 psi | 70% | 1955 fps | 97.3% |
| Lovex S040 | <<locked>> | 80% | 45,672 psi | 79% | 1936 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 44,382 psi | 77% | 1903 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 45,672 psi | 79% | 1936 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 26,760 psi | 47% | 1729 fps | 98% |
| Lovex S053 | <<locked>> | 80% | 25,744 psi | 45% | 1693 fps | 97.4% |
| Lovex S053 | <<locked>> | 80% | 26,760 psi | 47% | 1729 fps | 98% |
| Norma 200 | <<locked>> | 98% | 33,315 psi | 58% | 1942 fps | 95.4% |
| Norma 200 | <<locked>> | 98% | 33,315 psi | 58% | 1942 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,868 psi | 29% | 1089 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,708 psi | 29% | 1079 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,868 psi | 29% | 1089 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 28,616 psi | 50% | 1791 fps | 95% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 29,399 psi | 51% | 1791 fps | 95% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 28,616 psi | 50% | 1791 fps | 95% |
| Shooters World Blackout | <<locked>> | 80% | 40,437 psi | 70% | 1955 fps | 97.3% |
| Shooters World Blackout | <<locked>> | 80% | 39,131 psi | 68% | 1916 fps | 96.6% |
| Shooters World Blackout | <<locked>> | 80% | 40,437 psi | 70% | 1955 fps | 97.3% |
| Shooters World Buffalo Rifle | 15.8 gr | 80% | 36,985 psi | 64% | 1900 fps | 96.2% |
| Shooters World Buffalo Rifle | 15.8 gr | 80% | 35,491 psi | 62% | 1857 fps | 95.4% |
| Shooters World Buffalo Rifle | 15.8 gr | 80% | 36,985 psi | 64% | 1900 fps | 96.2% |
| Shooters World SOCOM | <<locked>> | 80% | 35,708 psi | 62% | 1873 fps | 96.6% |
| Shooters World SOCOM | <<locked>> | 80% | 34,534 psi | 60% | 1834 fps | 95.9% |
| Shooters World SOCOM | <<locked>> | 80% | 35,708 psi | 62% | 1873 fps | 96.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 25,947 psi | 45% | 1644 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 24,772 psi | 43% | 1611 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 25,947 psi | 45% | 1644 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 32,518 psi | 57% | 1801 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 30,545 psi | 53% | 1755 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 32,518 psi | 57% | 1801 fps | 100% |
| Vihtavuori N120 | <<locked>> | 82% | 22,669 psi | 39% | 1683 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 84% | 23,206 psi | 40% | 1680 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 82% | 22,669 psi | 39% | 1683 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 68 powders for .300 HAM'R loaded with the .308 | 135gr | Hornady FTX. ReloadSwiss RS 36 delivers the highest muzzle velocity at 2,119 fps; across all powders the maximum-charge window runs from 1,194 fps to 2,119 fps. Accurate 1680 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (396 MPa), the top charges use 42–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 1680, ADI AR 2207, ADI AR 2207 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, Accurate No. 11 FS rank at the top here: for .300 HAM'R with the .308 | 135gr | Hornady FTX they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, Hodgdon TrailBoss, Hodgdon TrailBoss 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.