Load Specifications
Load data in caliber 8 x 51 mm Mauser with .318 | 150gr | Impala LWHV LS bullet and 27 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-10x, ADI AR 2207 and SNPE Vectan SP 3.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 44,237 psi | 90% | 2408 fps | 99.2% |
| Accurate 2015 | <<locked>> | 98% | 42,888 psi | 87% | 2470 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 34,708 psi | 70% | 2398 fps | 97% |
| Accurate LT-30 | <<locked>> | 88% | 42,206 psi | 86% | 2362 fps | 96.7% |
| ADI AR 2207 | <<locked>> | 88% | 43,700 psi | 89% | 2467 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 44,425 psi | 90% | 2526 fps | 97% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,974 psi | 85% | 2533 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 94% | 43,743 psi | 89% | 2503 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 86% | 43,526 psi | 88% | 2431 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 42,424 psi | 86% | 2395 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 94% | 42,931 psi | 87% | 2500 fps | 96.7% |
| Hodgdon H4198 | <<locked>> | 86% | 43,758 psi | 89% | 2402 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,053 psi | 65% | 1532 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 40,161 psi | 81% | 2507 fps | 96.8% |
| IMR 4198 | <<locked>> | 92% | 43,207 psi | 88% | 2444 fps | 99.7% |
| IMR 4227 | <<locked>> | 82% | 44,280 psi | 90% | 2395 fps | 100% |
| Lovex S053 | <<locked>> | 82% | 43,424 psi | 88% | 2359 fps | 100% |
| Norma 200 | <<locked>> | 88% | 42,264 psi | 86% | 2454 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,850 psi | 65% | 1565 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 43,845 psi | 89% | 2428 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 42,772 psi | 87% | 2218 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 44,599 psi | 90% | 2500 fps | 98% |
| Somchem S335ᴾ | <<locked>> | 100% | 43,134 psi | 87% | 2441 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 88% | 43,729 psi | 89% | 2428 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 42,322 psi | 86% | 2418 fps | 98.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,497 psi | 88% | 2444 fps | 98.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 36,230 psi | 73% | 2395 fps | 97% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 39,102 psi | 79% | 2320 fps | 98.4% |
| Accurate 2015 | <<locked>> | 88% | 32,256 psi | 65% | 2260 fps | 95.6% |
| Accurate 2495 | <<locked>> | 96% | 30,719 psi | 62% | 2310 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 84% | 37,927 psi | 77% | 2280 fps | 95.6% |
| ADI AR 2207 | 26.6 gr | 80% | 34,867 psi | 71% | 2306 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 88% | 39,247 psi | 80% | 2428 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 84% | 26,832 psi | 54% | 2178 fps | 95.7% |
| Alliant Reloder-10x | 26.8 gr | 80% | 29,457 psi | 60% | 2205 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,579 psi | 74% | 2300 fps | 98.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 35,491 psi | 72% | 2264 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 90% | 38,290 psi | 78% | 2408 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 82% | 39,291 psi | 80% | 2316 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,844 psi | 48% | 1368 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 35,810 psi | 73% | 2415 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 31,459 psi | 64% | 2201 fps | 97.4% |
| IMR 4227 | <<locked>> | 80% | 41,713 psi | 85% | 2352 fps | 99.9% |
| Lovex S053 | <<locked>> | 80% | 41,292 psi | 84% | 2326 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,562 psi | 68% | 2283 fps | 98% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,830 psi | 48% | 1401 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,394 psi | 84% | 2385 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,493 psi | 78% | 2152 fps | 100% |
| SNPE Vectan SP 3 | 28.9 gr | 86% | 35,476 psi | 72% | 2323 fps | 95.6% |
| Somchem S335 | <<locked>> | 96% | 38,508 psi | 78% | 2359 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 34,954 psi | 71% | 2274 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,674 psi | 58% | 2133 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 90% | 33,243 psi | 67% | 2244 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 94% | 30,821 psi | 63% | 2270 fps | 95% |
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 8 x 51 mm Mauser loaded with the .318 | 150gr | Impala LWHV LS. Alliant AR-Comp delivers the highest muzzle velocity at 2,533 fps; across all powders the maximum-charge window runs from 1,532 fps to 2,533 fps. Accurate 2495 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 (340 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.318" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Alliant AR-Comp, 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. Alliant Reloder-10x, ADI AR 2207, SNPE Vectan SP 3 rank at the top here: for 8 x 51 mm Mauser with the .318 | 150gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.