Load Specifications
Load data in caliber .300 Savage with .308 | 125gr | Osprey Virtus bullet and 36 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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 45,643 psi | 86% | 2697 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 47,906 psi | 90% | 2818 fps | 99.3% |
| Accurate 2460 | <<locked>> | 96% | 46,760 psi | 88% | 2815 fps | 96.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 35,476 psi | 67% | 2657 fps | 97.4% |
| Accurate 2520ᴾ | <<locked>> | 100% | 46,891 psi | 89% | 2854 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 90% | 46,659 psi | 88% | 2707 fps | 98.1% |
| Accurate LT-32 | <<locked>> | 90% | 47,123 psi | 89% | 2710 fps | 96.3% |
| ADI AR 2207 | <<locked>> | 88% | 45,919 psi | 87% | 2766 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 46,833 psi | 88% | 2838 fps | 98% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,454 psi | 84% | 2848 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 94% | 46,006 psi | 87% | 2805 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 88% | 47,616 psi | 90% | 2769 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 47,732 psi | 90% | 2743 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 94% | 45,368 psi | 86% | 2812 fps | 97.7% |
| Hodgdon H335 | <<locked>> | 94% | 46,427 psi | 88% | 2831 fps | 96.9% |
| Hodgdon H4198 | <<locked>> | 86% | 45,716 psi | 86% | 2707 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,517 psi | 60% | 1732 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,018 psi | 79% | 2812 fps | 97.8% |
| IMR 4198 | <<locked>> | 92% | 45,484 psi | 86% | 2753 fps | 99.9% |
| IMR 4227 | <<locked>> | 82% | 45,861 psi | 87% | 2690 fps | 100% |
| Lovex S053 | <<locked>> | 84% | 47,311 psi | 89% | 2687 fps | 100% |
| Norma 200 | <<locked>> | 90% | 45,832 psi | 87% | 2785 fps | 99.9% |
| Norma 202ᴾ | <<locked>> | 100% | 43,076 psi | 81% | 2772 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,314 psi | 59% | 1772 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 45,353 psi | 86% | 2720 fps | 100% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 46,673 psi | 88% | 2805 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 45,992 psi | 87% | 2520 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 47,239 psi | 89% | 2838 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 47,253 psi | 89% | 2815 fps | 98.8% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,137 psi | 89% | 2746 fps | 96.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 44,889 psi | 85% | 2733 fps | 97.4% |
| Vihtavuori N120 | <<locked>> | 88% | 46,093 psi | 87% | 2723 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 47,065 psi | 89% | 2759 fps | 99.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,180 psi | 87% | 2753 fps | 99% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,971 psi | 72% | 2690 fps | 97.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 40,785 psi | 77% | 2700 fps | 95.9% |
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 40,103 psi | 76% | 2595 fps | 98.9% |
| Accurate 2015 | <<locked>> | 86% | 30,690 psi | 58% | 2467 fps | 95.2% |
| Accurate 2460 | <<locked>> | 92% | 40,538 psi | 77% | 2700 fps | 95.1% |
| Accurate 2495 | <<locked>> | 94% | 28,906 psi | 55% | 2500 fps | 95% |
| Accurate 2520 | <<locked>> | 98% | 43,540 psi | 82% | 2795 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 82% | 36,608 psi | 69% | 2510 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 88% | 44,367 psi | 84% | 2661 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 35,534 psi | 67% | 2569 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 86% | 38,232 psi | 72% | 2671 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 84% | 26,498 psi | 50% | 2415 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,443 psi | 56% | 2448 fps | 96.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,912 psi | 70% | 2569 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 34,577 psi | 65% | 2487 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 88% | 37,072 psi | 70% | 2644 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 90% | 40,248 psi | 76% | 2710 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 37,739 psi | 71% | 2546 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,945 psi | 43% | 1542 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 34,809 psi | 66% | 2651 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 31,792 psi | 60% | 2461 fps | 97.8% |
| IMR 4227 | <<locked>> | 80% | 43,018 psi | 81% | 2638 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 42,076 psi | 79% | 2602 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,228 psi | 63% | 2530 fps | 98.1% |
| Norma 202 | <<locked>> | 98% | 40,132 psi | 76% | 2713 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,669 psi | 43% | 1578 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 42,656 psi | 81% | 2671 fps | 100% |
| Rottweil R 901 | <<locked>> | 96% | 41,365 psi | 78% | 2703 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,044 psi | 74% | 2411 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 41,249 psi | 78% | 2726 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 34,461 psi | 65% | 2556 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 41,553 psi | 78% | 2644 fps | 95.5% |
| Somchem S335 | <<locked>> | 94% | 37,507 psi | 71% | 2589 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 35,737 psi | 68% | 2539 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,616 psi | 54% | 2369 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 88% | 31,894 psi | 60% | 2461 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 94% | 31,430 psi | 59% | 2536 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 98% | 38,348 psi | 72% | 2648 fps | 95.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 36 powders for .300 Savage loaded with the .308 | 125gr | Osprey Virtus. Accurate 2520 delivers the highest muzzle velocity at 2,854 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,854 fps. Accurate 2015 gives the best case fill at 100 %, and 36 of the 36 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.