Load Specifications
Load data in caliber .300 Savage with .308 | 145gr | Frontier RSBT bullet and 48 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% | 45,310 psi | 86% | 2464 fps | 99.9% |
| Accurate 2015 | <<locked>> | 96% | 45,237 psi | 85% | 2543 fps | 99.6% |
| Accurate 2460 | <<locked>> | 94% | 46,876 psi | 89% | 2589 fps | 97.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,436 psi | 74% | 2516 fps | 99.1% |
| Accurate 2520 | <<locked>> | 98% | 46,789 psi | 88% | 2628 fps | 97.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,709 psi | 69% | 2477 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 88% | 46,398 psi | 88% | 2477 fps | 98.8% |
| Accurate LT-32 | <<locked>> | 88% | 46,862 psi | 89% | 2484 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 86% | 45,890 psi | 87% | 2523 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 46,818 psi | 88% | 2612 fps | 98.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,340 psi | 89% | 2657 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 92% | 46,282 psi | 87% | 2572 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 47,529 psi | 90% | 2533 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 47,398 psi | 90% | 2513 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 94% | 45,179 psi | 85% | 2510 fps | 95.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 47,471 psi | 90% | 2654 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 92% | 45,324 psi | 86% | 2585 fps | 98.6% |
| Hodgdon H335 | <<locked>> | 92% | 45,818 psi | 87% | 2595 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 84% | 45,397 psi | 86% | 2474 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,169 psi | 61% | 1572 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 45,078 psi | 85% | 2641 fps | 99.2% |
| IMR 4198 | <<locked>> | 90% | 45,223 psi | 85% | 2513 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 47,732 psi | 90% | 2605 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 94% | 46,789 psi | 88% | 2585 fps | 96.5% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 44,222 psi | 84% | 2598 fps | 96.8% |
| Lovex S053 | <<locked>> | 82% | 47,166 psi | 89% | 2444 fps | 100% |
| Norma 200 | <<locked>> | 88% | 46,340 psi | 88% | 2556 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 46,006 psi | 87% | 2598 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,213 psi | 61% | 1614 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 47,819 psi | 90% | 2520 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 44,933 psi | 85% | 2552 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 98% | 47,340 psi | 89% | 2585 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 88% | 47,732 psi | 90% | 2605 fps | 97.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 44,222 psi | 84% | 2598 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 45,861 psi | 87% | 2283 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 47,108 psi | 89% | 2608 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 46,934 psi | 89% | 2575 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 47,065 psi | 89% | 2523 fps | 97.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,914 psi | 75% | 2418 fps | 97.4% |
| Somchem S335 | <<locked>> | 98% | 45,194 psi | 85% | 2516 fps | 98.4% |
| Vihtavuori N120 | <<locked>> | 86% | 46,035 psi | 87% | 2484 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 46,978 psi | 89% | 2526 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 98% | 46,209 psi | 87% | 2526 fps | 99.6% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,857 psi | 77% | 2523 fps | 99.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,555 psi | 82% | 2533 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 98% | 47,906 psi | 90% | 2592 fps | 95.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,134 psi | 80% | 2523 fps | 96.8% |
| Winchester 748 | <<locked>> | 98% | 45,919 psi | 87% | 2625 fps | 96.1% |
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 42,467 psi | 80% | 2418 fps | 99.7% |
| Accurate 2015 | <<locked>> | 80% | 27,601 psi | 52% | 2182 fps | 95.2% |
| Accurate 2460 | <<locked>> | 88% | 38,464 psi | 73% | 2441 fps | 95.8% |
| Accurate 2495 | <<locked>> | 88% | 26,324 psi | 50% | 2228 fps | 95.2% |
| Accurate 2520 | <<locked>> | 92% | 37,855 psi | 72% | 2467 fps | 95.1% |
| Accurate 4064 | <<locked>> | 98% | 34,316 psi | 65% | 2428 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 36,448 psi | 69% | 2297 fps | 96.8% |
| Accurate LT-32 | <<locked>> | 82% | 38,943 psi | 74% | 2343 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 38,101 psi | 72% | 2395 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,388 psi | 63% | 2346 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 25,367 psi | 48% | 2185 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,995 psi | 60% | 2300 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,436 psi | 74% | 2395 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,461 psi | 65% | 2280 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 42,786 psi | 81% | 2467 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 98% | 44,498 psi | 84% | 2605 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 82% | 32,851 psi | 62% | 2333 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 86% | 37,782 psi | 71% | 2448 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 40,147 psi | 76% | 2382 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,757 psi | 45% | 1404 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 31,082 psi | 59% | 2349 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 33,823 psi | 64% | 2297 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 82% | 38,624 psi | 73% | 2444 fps | 95% |
| Lovex D073.5 | <<locked>> | 90% | 40,944 psi | 77% | 2487 fps | 95% |
| Lovex D073.6 | <<locked>> | 96% | 38,580 psi | 73% | 2497 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 44,541 psi | 84% | 2405 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,926 psi | 68% | 2369 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 35,694 psi | 67% | 2408 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,641 psi | 45% | 1440 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 45,194 psi | 85% | 2477 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 39,494 psi | 75% | 2454 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 90% | 37,623 psi | 71% | 2408 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 82% | 38,624 psi | 73% | 2444 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 96% | 38,580 psi | 73% | 2497 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,147 psi | 78% | 2218 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 36,172 psi | 68% | 2405 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,358 psi | 61% | 2297 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 36,680 psi | 69% | 2336 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 33,373 psi | 63% | 2283 fps | 95.4% |
| Somchem S335 | <<locked>> | 88% | 33,446 psi | 63% | 2293 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 38,276 psi | 72% | 2359 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,676 psi | 58% | 2218 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 82% | 28,471 psi | 54% | 2172 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 88% | 28,239 psi | 53% | 2247 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 94% | 36,172 psi | 68% | 2392 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 96% | 45,150 psi | 85% | 2549 fps | 95% |
| Vihtavuori N540 | <<locked>> | 96% | 37,086 psi | 70% | 2425 fps | 95.3% |
| Winchester 748 | <<locked>> | 96% | 43,047 psi | 81% | 2575 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 48 powders for .300 Savage loaded with the .308 | 145gr | Frontier RSBT. Alliant AR-Comp delivers the highest muzzle velocity at 2,657 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,657 fps. Accurate 2495 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant AR-Comp 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.