Load Specifications
Load data in caliber .30-40 Krag with .308 | 150gr | Swift A-Frame bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 and Lovex D073.6.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 40,335 psi | 86% | 2539 fps | 99.9% |
| Accurate 2460 | <<locked>> | 82% | 41,060 psi | 87% | 2579 fps | 98.7% |
| Accurate 2495 | <<locked>> | 92% | 41,843 psi | 89% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 41,611 psi | 88% | 2628 fps | 98.6% |
| Accurate 4064 | <<locked>> | 94% | 41,698 psi | 88% | 2651 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,713 psi | 88% | 2595 fps | 97% |
| Alliant AR-Comp | <<locked>> | 88% | 42,554 psi | 90% | 2654 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,047 psi | 89% | 2680 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 41,510 psi | 88% | 2641 fps | 96.6% |
| Bofors RP3 | <<locked>> | 94% | 40,886 psi | 87% | 2641 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,829 psi | 89% | 2552 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 88% | 42,351 psi | 90% | 2664 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 82% | 41,959 psi | 89% | 2615 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 82% | 42,482 psi | 90% | 2631 fps | 99.1% |
| Hodgdon H4895 | <<locked>> | 88% | 42,322 psi | 90% | 2641 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 40,437 psi | 86% | 2651 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,750 psi | 72% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,104 psi | 87% | 2598 fps | 95.9% |
| IMR 3031 | <<locked>> | 88% | 40,683 psi | 86% | 2651 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 41,713 psi | 88% | 2595 fps | 97% |
| Lovex D073.5 | <<locked>> | 82% | 40,843 psi | 87% | 2579 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 88% | 39,900 psi | 85% | 2608 fps | 98.2% |
| Lovex S062 | <<locked>> | 92% | 41,611 psi | 88% | 2608 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 41,191 psi | 87% | 2585 fps | 96.9% |
| Norma 202 | <<locked>> | 88% | 41,060 psi | 87% | 2602 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,852 psi | 72% | 1716 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,524 psi | 88% | 2589 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 41,756 psi | 89% | 2726 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 86% | 42,612 psi | 90% | 2595 fps | 99% |
| Rottweil R 902 | <<locked>> | 90% | 41,423 psi | 88% | 2582 fps | 97% |
| Rottweil R 903 | <<locked>> | 96% | 40,509 psi | 86% | 2625 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 39,900 psi | 85% | 2608 fps | 98.2% |
| Shooters World Precision | <<locked>> | 92% | 41,611 psi | 88% | 2608 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 40,901 psi | 87% | 2513 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 42,438 psi | 90% | 2556 fps | 99.6% |
| Somchem S321 | <<locked>> | 84% | 42,134 psi | 89% | 2625 fps | 97.4% |
| Somchem S335 | <<locked>> | 88% | 42,627 psi | 90% | 2566 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 41,872 psi | 89% | 2638 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 82% | 41,147 psi | 87% | 2513 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 40,727 psi | 86% | 2520 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 92% | 42,366 psi | 90% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,452 psi | 88% | 2589 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 96% | 40,132 psi | 85% | 2575 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 86% | 41,814 psi | 89% | 2592 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 92% | 42,569 psi | 90% | 2625 fps | 99.1% |
| Winchester 748 | <<locked>> | 86% | 40,350 psi | 86% | 2628 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 42,264 psi | 90% | 2648 fps | 96.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 35,665 psi | 76% | 2444 fps | 99.6% |
| Accurate 2460 | <<locked>> | 80% | 38,435 psi | 82% | 2526 fps | 98.2% |
| Accurate 2495 | <<locked>> | 80% | 28,036 psi | 59% | 2329 fps | 98.3% |
| Accurate 2520 | <<locked>> | 80% | 33,663 psi | 71% | 2464 fps | 96.6% |
| Accurate 4064 | <<locked>> | 80% | 26,556 psi | 56% | 2300 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 82% | 36,811 psi | 78% | 2493 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,735 psi | 69% | 2464 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,537 psi | 84% | 2625 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 36,521 psi | 77% | 2539 fps | 95.1% |
| Bofors RP3 | <<locked>> | 92% | 38,145 psi | 81% | 2585 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,014 psi | 79% | 2454 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 34,418 psi | 73% | 2497 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 39,146 psi | 83% | 2562 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 39,755 psi | 84% | 2579 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 86% | 39,639 psi | 84% | 2585 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 37,956 psi | 81% | 2595 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,077 psi | 53% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 38,508 psi | 82% | 2543 fps | 95.1% |
| IMR 3031 | 37.2 gr | 80% | 31,386 psi | 67% | 2444 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 82% | 36,811 psi | 78% | 2493 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 80% | 38,247 psi | 81% | 2526 fps | 97.1% |
| Lovex D073.6 | 39.6 gr | 80% | 30,298 psi | 64% | 2392 fps | 95.2% |
| Lovex S062 | <<locked>> | 88% | 36,956 psi | 78% | 2513 fps | 95.7% |
| Norma 201 | <<locked>> | 84% | 36,347 psi | 77% | 2484 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 31,792 psi | 67% | 2402 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,034 psi | 53% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,870 psi | 82% | 2536 fps | 97.6% |
| ReloadSwiss RS 60 | 45.4 gr | 90% | 34,461 psi | 73% | 2549 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 35,505 psi | 75% | 2448 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 86% | 36,811 psi | 78% | 2487 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 94% | 38,058 psi | 81% | 2575 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,298 psi | 64% | 2392 fps | 95.2% |
| Shooters World Precision | <<locked>> | 88% | 36,956 psi | 78% | 2513 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,040 psi | 72% | 2372 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,586 psi | 59% | 2234 fps | 96.1% |
| Somchem S321 | <<locked>> | 80% | 36,753 psi | 78% | 2516 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 33,301 psi | 71% | 2375 fps | 97.9% |
| Somchem S355 | <<locked>> | 94% | 39,421 psi | 84% | 2589 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 38,711 psi | 82% | 2467 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,924 psi | 72% | 2385 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 80% | 28,906 psi | 61% | 2343 fps | 98.4% |
| Vihtavuori N140 | <<locked>> | 80% | 29,994 psi | 64% | 2339 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 90% | 33,199 psi | 70% | 2431 fps | 95% |
| Vihtavuori N530 | <<locked>> | 82% | 36,564 psi | 78% | 2484 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 28,906 psi | 61% | 2323 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 33,098 psi | 70% | 2464 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 39,552 psi | 84% | 2595 fps | 95.6% |
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 80 powders for .30-40 Krag loaded with the .308 | 150gr | Swift A-Frame. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,726 fps. Accurate 4350 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 72–90 %, 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 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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. ReloadSwiss RS 60, IMR 3031, Lovex D073.6 rank at the top here: for .30-40 Krag with the .308 | 150gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, ADI AR 2208, Alliant Power Pro 2000-MR burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.