Load Specifications
Load data in caliber .300 Savage with .308 | 150gr | Speer Grand Slam bullet and 55 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 2015 | <<locked>> | 92% | 45,803 psi | 87% | 2546 fps | 99.9% |
| Accurate 2460 | <<locked>> | 90% | 46,905 psi | 89% | 2589 fps | 98.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,615 psi | 88% | 2625 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 47,311 psi | 89% | 2635 fps | 98.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,250 psi | 82% | 2592 fps | 98.7% |
| Accurate LT-30 | <<locked>> | 84% | 45,252 psi | 85% | 2464 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 84% | 45,629 psi | 86% | 2474 fps | 98.1% |
| ADI AR 2207 | <<locked>> | 82% | 45,455 psi | 86% | 2507 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 46,325 psi | 88% | 2602 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 94% | 47,456 psi | 90% | 2598 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 94% | 45,005 psi | 85% | 2615 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 47,863 psi | 90% | 2687 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 88% | 46,064 psi | 87% | 2562 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 82% | 46,978 psi | 89% | 2516 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 46,557 psi | 88% | 2503 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 92% | 47,732 psi | 90% | 2559 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 45,121 psi | 85% | 2618 fps | 97% |
| Hodgdon H322 | <<locked>> | 88% | 44,889 psi | 85% | 2579 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 88% | 45,672 psi | 86% | 2595 fps | 98.7% |
| Hodgdon H4198 | <<locked>> | 82% | 47,007 psi | 89% | 2507 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 45,934 psi | 87% | 2651 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,069 psi | 62% | 1598 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 45,672 psi | 86% | 2651 fps | 99.8% |
| IMR 4198 | <<locked>> | 88% | 47,616 psi | 90% | 2543 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 47,456 psi | 90% | 2598 fps | 96.8% |
| Lovex D073.4 | <<locked>> | 84% | 47,224 psi | 89% | 2602 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 90% | 46,876 psi | 89% | 2592 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 96% | 44,918 psi | 85% | 2608 fps | 98% |
| Lovex S062ᴾ | <<locked>> | 100% | 46,615 psi | 88% | 2602 fps | 96.8% |
| Norma 200 | <<locked>> | 84% | 46,340 psi | 88% | 2546 fps | 100% |
| Norma 201 | <<locked>> | 96% | 46,514 psi | 88% | 2585 fps | 96.7% |
| Norma 202 | <<locked>> | 96% | 46,325 psi | 88% | 2605 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,141 psi | 63% | 1637 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 47,747 psi | 90% | 2605 fps | 98.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,945 psi | 79% | 2605 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 94% | 47,732 psi | 90% | 2592 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 98% | 46,586 psi | 88% | 2579 fps | 96.7% |
| Shooters World AR Plus | <<locked>> | 84% | 47,224 psi | 89% | 2602 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 96% | 44,918 psi | 85% | 2608 fps | 98% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 46,615 psi | 88% | 2602 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 47,369 psi | 89% | 2297 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 46,804 psi | 88% | 2605 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 46,992 psi | 89% | 2575 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 46,847 psi | 88% | 2523 fps | 98.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 45,310 psi | 86% | 2513 fps | 99.3% |
| Somchem S321 | <<locked>> | 90% | 45,034 psi | 85% | 2582 fps | 96.6% |
| Somchem S335 | <<locked>> | 94% | 45,411 psi | 86% | 2523 fps | 99.2% |
| Vihtavuori N120 | <<locked>> | 82% | 45,556 psi | 86% | 2464 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 46,615 psi | 88% | 2520 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 46,282 psi | 87% | 2526 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 47,413 psi | 90% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 46,818 psi | 88% | 2589 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 92% | 44,933 psi | 85% | 2549 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 98% | 45,252 psi | 85% | 2579 fps | 98.5% |
| Winchester 748 | <<locked>> | 94% | 46,006 psi | 87% | 2635 fps | 97.5% |
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 31,488 psi | 59% | 2270 fps | 97.8% |
| Accurate 2460 | <<locked>> | 80% | 33,707 psi | 64% | 2339 fps | 95.4% |
| Accurate 2495 | <<locked>> | 80% | 23,931 psi | 45% | 2139 fps | 95.1% |
| Accurate 2520 | <<locked>> | 86% | 35,911 psi | 68% | 2425 fps | 95.8% |
| Accurate 4064 | <<locked>> | 90% | 31,401 psi | 59% | 2349 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 40,190 psi | 76% | 2375 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 80% | 40,567 psi | 77% | 2382 fps | 97% |
| ADI AR 2207 | <<locked>> | 80% | 42,743 psi | 81% | 2461 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,956 psi | 72% | 2448 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 90% | 41,959 psi | 79% | 2503 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 28,674 psi | 54% | 2280 fps | 99.1% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 45,034 psi | 85% | 2638 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,056 psi | 68% | 2382 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 43,903 psi | 83% | 2470 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,595 psi | 73% | 2365 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 39,929 psi | 75% | 2418 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 90% | 39,117 psi | 74% | 2507 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 34,606 psi | 65% | 2375 fps | 97.1% |
| Hodgdon H335 | <<locked>> | 80% | 34,998 psi | 66% | 2388 fps | 96.1% |
| Hodgdon H4198 | <<locked>> | 80% | 44,309 psi | 84% | 2461 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 43,062 psi | 81% | 2595 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,352 psi | 46% | 1424 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 27,528 psi | 52% | 2251 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 37,521 psi | 71% | 2372 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 41,959 psi | 79% | 2503 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 41,162 psi | 78% | 2493 fps | 97% |
| Lovex D073.5 | <<locked>> | 84% | 38,334 psi | 72% | 2438 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 88% | 34,301 psi | 65% | 2402 fps | 95.1% |
| Lovex S062 | <<locked>> | 96% | 41,408 psi | 78% | 2510 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 40,799 psi | 77% | 2454 fps | 100% |
| Norma 201 | <<locked>> | 92% | 40,988 psi | 77% | 2487 fps | 95.3% |
| Norma 202 | <<locked>> | 84% | 31,807 psi | 60% | 2316 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,279 psi | 46% | 1457 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 36,840 psi | 70% | 2402 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 39,247 psi | 74% | 2546 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 82% | 33,649 psi | 64% | 2316 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 94% | 41,350 psi | 78% | 2484 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 41,162 psi | 78% | 2493 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 88% | 34,301 psi | 65% | 2402 fps | 95.1% |
| Shooters World Precision | <<locked>> | 96% | 41,408 psi | 78% | 2510 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 44,933 psi | 85% | 2264 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,363 psi | 72% | 2451 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,666 psi | 69% | 2388 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 32,242 psi | 61% | 2241 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 29,399 psi | 56% | 2195 fps | 95.2% |
| Somchem S321 | <<locked>> | 86% | 39,421 psi | 74% | 2477 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 29,602 psi | 56% | 2198 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 42,844 psi | 81% | 2421 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,534 psi | 65% | 2300 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 80% | 30,066 psi | 57% | 2211 fps | 97.2% |
| Vihtavuori N135 | <<locked>> | 80% | 25,222 psi | 48% | 2159 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 86% | 31,995 psi | 60% | 2303 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 90% | 41,930 psi | 79% | 2497 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 88% | 32,779 psi | 62% | 2333 fps | 95.1% |
| Winchester 748 | <<locked>> | 88% | 37,724 psi | 71% | 2477 fps | 95.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 55 powders for .300 Savage loaded with the .308 | 150gr | Speer Grand Slam. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,687 fps. Accurate 2495 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:16.0 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.