Load Specifications
Load data in caliber .30-40 Krag with .308 | 150gr | Alaska Bullet Works Kodiak SP SPBC 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 Accurate 4064.
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% | 40,292 psi | 85% | 2536 fps | 99.9% |
| Accurate 2460 | <<locked>> | 82% | 40,770 psi | 86% | 2572 fps | 98.7% |
| Accurate 2495 | <<locked>> | 92% | 41,524 psi | 88% | 2621 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 41,278 psi | 88% | 2621 fps | 98.5% |
| Accurate 4064 | <<locked>> | 94% | 41,336 psi | 88% | 2644 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,669 psi | 88% | 2592 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 88% | 42,569 psi | 90% | 2654 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,032 psi | 89% | 2677 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 41,234 psi | 87% | 2635 fps | 96.5% |
| Bofors RP3 | <<locked>> | 94% | 40,611 psi | 86% | 2635 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,495 psi | 88% | 2546 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 88% | 42,032 psi | 89% | 2654 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 82% | 41,655 psi | 88% | 2608 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 82% | 42,438 psi | 90% | 2628 fps | 99.1% |
| Hodgdon H4895 | <<locked>> | 88% | 42,279 psi | 90% | 2638 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 40,205 psi | 85% | 2644 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,605 psi | 71% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 40,814 psi | 87% | 2589 fps | 95.8% |
| IMR 3031 | <<locked>> | 88% | 40,350 psi | 86% | 2644 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 41,669 psi | 88% | 2592 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 82% | 40,567 psi | 86% | 2572 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 90% | 42,424 psi | 90% | 2654 fps | 98.7% |
| Lovex S062 | <<locked>> | 92% | 41,582 psi | 88% | 2608 fps | 97% |
| Norma 201 | <<locked>> | 88% | 40,915 psi | 87% | 2579 fps | 96.8% |
| Norma 202 | <<locked>> | 88% | 41,046 psi | 87% | 2602 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,997 psi | 72% | 1719 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,249 psi | 88% | 2582 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 41,495 psi | 88% | 2717 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 86% | 42,293 psi | 90% | 2589 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 90% | 41,466 psi | 88% | 2582 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 96% | 40,509 psi | 86% | 2625 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 42,424 psi | 90% | 2654 fps | 98.7% |
| Shooters World Precision | <<locked>> | 92% | 41,582 psi | 88% | 2608 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 40,901 psi | 87% | 2513 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 42,424 psi | 90% | 2556 fps | 99.6% |
| Somchem S321 | <<locked>> | 84% | 41,829 psi | 89% | 2618 fps | 97.3% |
| Somchem S335 | <<locked>> | 88% | 42,351 psi | 90% | 2559 fps | 99.5% |
| Somchem S355 | <<locked>> | 96% | 41,872 psi | 89% | 2635 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 82% | 40,828 psi | 87% | 2507 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 40,727 psi | 86% | 2520 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 92% | 42,322 psi | 90% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,133 psi | 87% | 2582 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 96% | 40,132 psi | 85% | 2575 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 86% | 41,539 psi | 88% | 2585 fps | 97% |
| Vihtavuori N540 | <<locked>> | 92% | 42,264 psi | 90% | 2618 fps | 99% |
| Winchester 748 | <<locked>> | 86% | 40,089 psi | 85% | 2621 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 42,250 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% | 35,636 psi | 76% | 2444 fps | 99.6% |
| Accurate 2460 | <<locked>> | 80% | 38,130 psi | 81% | 2520 fps | 98.2% |
| Accurate 2495 | <<locked>> | 80% | 27,978 psi | 59% | 2329 fps | 98.3% |
| Accurate 2520 | <<locked>> | 80% | 33,620 psi | 71% | 2461 fps | 96.5% |
| Accurate 4064 | 38.4 gr | 82% | 28,181 psi | 60% | 2346 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 36,811 psi | 78% | 2490 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,706 psi | 69% | 2464 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,218 psi | 83% | 2618 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 36,245 psi | 77% | 2533 fps | 95% |
| Bofors RP3 | <<locked>> | 92% | 37,869 psi | 80% | 2579 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,738 psi | 78% | 2448 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 34,156 psi | 72% | 2490 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 39,131 psi | 83% | 2559 fps | 99.2% |
| Hodgdon H335 | <<locked>> | 80% | 39,479 psi | 84% | 2572 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 86% | 39,624 psi | 84% | 2582 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 37,681 psi | 80% | 2589 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,932 psi | 53% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 38,464 psi | 82% | 2539 fps | 95.1% |
| IMR 3031 | 37 gr | 80% | 31,154 psi | 66% | 2438 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 82% | 36,811 psi | 78% | 2490 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 80% | 37,956 psi | 81% | 2520 fps | 97% |
| Lovex D073.6 | <<locked>> | 80% | 30,240 psi | 64% | 2388 fps | 95.2% |
| Lovex S062 | <<locked>> | 88% | 36,695 psi | 78% | 2507 fps | 95.6% |
| Norma 201 | <<locked>> | 84% | 36,361 psi | 77% | 2484 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 31,778 psi | 67% | 2398 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,135 psi | 53% | 1535 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,841 psi | 82% | 2536 fps | 97.6% |
| ReloadSwiss RS 60 | 45.2 gr | 90% | 34,258 psi | 73% | 2539 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 35,433 psi | 75% | 2444 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 86% | 36,535 psi | 78% | 2480 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 94% | 37,782 psi | 80% | 2569 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,240 psi | 64% | 2388 fps | 95.2% |
| Shooters World Precision | <<locked>> | 88% | 36,695 psi | 78% | 2507 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,765 psi | 72% | 2365 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,369 psi | 58% | 2228 fps | 96% |
| Somchem S321 | <<locked>> | 80% | 36,477 psi | 77% | 2507 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 33,243 psi | 71% | 2372 fps | 97.9% |
| Somchem S355 | <<locked>> | 94% | 39,117 psi | 83% | 2582 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 38,421 psi | 82% | 2461 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,634 psi | 71% | 2375 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 28,674 psi | 61% | 2336 fps | 98.3% |
| Vihtavuori N140 | <<locked>> | 80% | 29,950 psi | 64% | 2336 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 92% | 35,288 psi | 75% | 2474 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 82% | 36,521 psi | 77% | 2480 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 28,863 psi | 61% | 2320 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 32,866 psi | 70% | 2457 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 39,334 psi | 83% | 2589 fps | 95.5% |
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 79 powders for .30-40 Krag loaded with the .308 | 150gr | Alaska Bullet Works Kodiak SP SPBC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,717 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,717 fps. Accurate 4350 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.5 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, Accurate 4064 rank at the top here: for .30-40 Krag with the .308 | 150gr | Alaska Bullet Works Kodiak SP SPBC 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.