Load Specifications
Load data in caliber .300 Savage with .308 | 150gr | Merlin Virtus bullet and 50 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>> | 82% | 45,992 psi | 87% | 2448 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 46,267 psi | 87% | 2530 fps | 99.8% |
| Accurate 2460 | <<locked>> | 94% | 47,790 psi | 90% | 2579 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,147 psi | 76% | 2503 fps | 99.5% |
| Accurate 2520 | <<locked>> | 96% | 44,759 psi | 85% | 2569 fps | 97.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,391 psi | 71% | 2467 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 88% | 47,210 psi | 89% | 2464 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 88% | 47,645 psi | 90% | 2474 fps | 98% |
| ADI AR 2207 | <<locked>> | 86% | 46,920 psi | 89% | 2507 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 44,628 psi | 84% | 2546 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 96% | 45,948 psi | 87% | 2543 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 98% | 45,788 psi | 86% | 2605 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 92% | 47,050 psi | 89% | 2556 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 84% | 45,324 psi | 86% | 2470 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 45,571 psi | 86% | 2461 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 94% | 46,137 psi | 87% | 2503 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 98% | 45,832 psi | 87% | 2605 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 92% | 46,122 psi | 87% | 2572 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 92% | 47,282 psi | 89% | 2592 fps | 98.5% |
| Hodgdon H4198 | <<locked>> | 84% | 46,253 psi | 87% | 2464 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,300 psi | 61% | 1558 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,296 psi | 87% | 2635 fps | 99.6% |
| IMR 4198 | <<locked>> | 90% | 46,224 psi | 87% | 2497 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 45,948 psi | 87% | 2543 fps | 95.8% |
| Lovex D073.4 | <<locked>> | 86% | 45,672 psi | 86% | 2549 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 92% | 44,614 psi | 84% | 2526 fps | 96.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 45,672 psi | 86% | 2595 fps | 97.7% |
| Norma 200 | <<locked>> | 88% | 46,920 psi | 89% | 2536 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,224 psi | 89% | 2569 fps | 96.3% |
| Norma 202ᴾ | <<locked>> | 100% | 47,137 psi | 89% | 2592 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,937 psi | 60% | 1591 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 45,992 psi | 87% | 2546 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 96% | 45,484 psi | 86% | 2533 fps | 98% |
| Shooters World AR Plus | <<locked>> | 86% | 45,672 psi | 86% | 2549 fps | 97.5% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 45,672 psi | 86% | 2595 fps | 97.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 46,427 psi | 88% | 2264 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 45,266 psi | 86% | 2552 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 45,571 psi | 86% | 2526 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 45,005 psi | 85% | 2464 fps | 98% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,741 psi | 77% | 2408 fps | 98.1% |
| Somchem S321 | <<locked>> | 94% | 46,311 psi | 87% | 2575 fps | 96.3% |
| Somchem S335 | <<locked>> | 98% | 46,122 psi | 87% | 2507 fps | 98.9% |
| Vihtavuori N120 | <<locked>> | 86% | 47,007 psi | 89% | 2464 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 45,107 psi | 85% | 2470 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 47,413 psi | 90% | 2516 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,916 psi | 79% | 2516 fps | 99.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,570 psi | 84% | 2526 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 96% | 46,224 psi | 87% | 2543 fps | 95.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,989 psi | 81% | 2513 fps | 97.6% |
| Winchester 748 | <<locked>> | 98% | 47,326 psi | 89% | 2625 fps | 97.1% |
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 43,091 psi | 81% | 2402 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 27,644 psi | 52% | 2162 fps | 95.9% |
| Accurate 2460 | <<locked>> | 84% | 34,011 psi | 64% | 2329 fps | 95% |
| Accurate 2495 | <<locked>> | 86% | 24,816 psi | 47% | 2162 fps | 95.1% |
| Accurate 2520 | <<locked>> | 90% | 36,187 psi | 68% | 2411 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 32,605 psi | 62% | 2369 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 37,028 psi | 70% | 2287 fps | 97.5% |
| Accurate LT-32 | <<locked>> | 80% | 37,405 psi | 71% | 2290 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 38,914 psi | 74% | 2379 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,200 psi | 65% | 2346 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 94% | 43,120 psi | 81% | 2493 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 25,585 psi | 48% | 2175 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,213 psi | 61% | 2280 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,045 psi | 76% | 2382 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,911 psi | 66% | 2267 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,046 psi | 78% | 2411 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 96% | 42,888 psi | 81% | 2552 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 31,212 psi | 59% | 2274 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 84% | 35,955 psi | 68% | 2385 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 40,930 psi | 77% | 2372 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,641 psi | 45% | 1388 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 29,704 psi | 56% | 2293 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 34,505 psi | 65% | 2287 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 94% | 43,120 psi | 81% | 2493 fps | 95.1% |
| Lovex D073.4 | <<locked>> | 80% | 36,622 psi | 69% | 2382 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 88% | 38,740 psi | 73% | 2421 fps | 95% |
| Lovex D073.6 | <<locked>> | 94% | 36,854 psi | 70% | 2438 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 36,289 psi | 69% | 2352 fps | 99.7% |
| Norma 201 | <<locked>> | 98% | 44,237 psi | 84% | 2520 fps | 95.5% |
| Norma 202 | <<locked>> | 90% | 34,171 psi | 65% | 2352 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,482 psi | 44% | 1421 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 37,884 psi | 72% | 2398 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 88% | 35,752 psi | 68% | 2349 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 36,622 psi | 69% | 2382 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 94% | 36,854 psi | 70% | 2438 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,684 psi | 79% | 2198 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,432 psi | 65% | 2346 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,996 psi | 62% | 2290 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 35,027 psi | 66% | 2283 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 31,821 psi | 60% | 2231 fps | 95.5% |
| Somchem S321 | <<locked>> | 92% | 43,395 psi | 82% | 2526 fps | 95.6% |
| Somchem S335 | <<locked>> | 86% | 31,937 psi | 60% | 2238 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 39,073 psi | 74% | 2346 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,125 psi | 59% | 2208 fps | 98% |
| Vihtavuori N133 | <<locked>> | 80% | 26,992 psi | 51% | 2116 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 86% | 26,934 psi | 51% | 2195 fps | 95.8% |
| Vihtavuori N140 | <<locked>> | 90% | 32,460 psi | 61% | 2290 fps | 95% |
| Vihtavuori N530 | <<locked>> | 94% | 43,265 psi | 82% | 2490 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 94% | 35,418 psi | 67% | 2369 fps | 95.5% |
| Winchester 748 | <<locked>> | 94% | 41,278 psi | 78% | 2520 fps | 95.6% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 50 powders for .300 Savage loaded with the .308 | 150gr | Merlin Virtus. IMR 3031 delivers the highest muzzle velocity at 2,635 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,635 fps. Accurate 2495 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 (365 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.