Load Specifications
Load data in caliber .30-40 Krag with .308 | 150gr | Barnes RRLP bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Winchester 748 and Accurate 2520.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 94% | 41,292 psi | 88% | 2562 fps | 99.9% |
| Accurate 2460 | <<locked>> | 92% | 42,105 psi | 89% | 2602 fps | 98.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,201 psi | 77% | 2546 fps | 99.7% |
| Accurate 2520 | <<locked>> | 94% | 39,871 psi | 85% | 2598 fps | 97.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 33,881 psi | 72% | 2513 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 84% | 40,640 psi | 86% | 2464 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 84% | 41,104 psi | 87% | 2474 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 84% | 42,032 psi | 89% | 2536 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 40,698 psi | 86% | 2589 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 94% | 41,713 psi | 88% | 2585 fps | 96.3% |
| Alliant AR-Comp | <<locked>> | 96% | 41,611 psi | 88% | 2641 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 42,308 psi | 90% | 2589 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 82% | 40,350 psi | 86% | 2497 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,597 psi | 88% | 2500 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 42,134 psi | 89% | 2549 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 96% | 41,553 psi | 88% | 2644 fps | 97% |
| Hodgdon H322 | <<locked>> | 90% | 42,467 psi | 90% | 2621 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 88% | 39,769 psi | 84% | 2575 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 82% | 42,148 psi | 89% | 2503 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,893 psi | 66% | 1611 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 42,250 psi | 90% | 2677 fps | 99.8% |
| IMR 4198 | <<locked>> | 88% | 42,641 psi | 90% | 2543 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 41,713 psi | 88% | 2585 fps | 96.3% |
| Lovex D073.4 | <<locked>> | 84% | 39,987 psi | 85% | 2566 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 92% | 42,583 psi | 90% | 2612 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 98% | 40,625 psi | 86% | 2621 fps | 98% |
| Lovex S062ᴾ | <<locked>> | 100% | 39,697 psi | 84% | 2569 fps | 96% |
| Norma 200 | <<locked>> | 86% | 40,727 psi | 86% | 2552 fps | 100% |
| Norma 201 | <<locked>> | 98% | 41,829 psi | 89% | 2598 fps | 96.5% |
| Norma 202 | <<locked>> | 96% | 39,900 psi | 85% | 2579 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,776 psi | 63% | 1640 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 41,901 psi | 89% | 2589 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 96% | 41,466 psi | 88% | 2589 fps | 98.5% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 42,206 psi | 90% | 2595 fps | 96.6% |
| Shooters World AR Plus | <<locked>> | 84% | 39,987 psi | 85% | 2566 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 98% | 40,625 psi | 86% | 2621 fps | 98% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 39,697 psi | 84% | 2569 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 42,076 psi | 89% | 2552 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 42,569 psi | 90% | 2303 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 40,770 psi | 86% | 2585 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 41,568 psi | 88% | 2569 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 40,480 psi | 86% | 2500 fps | 98.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,682 psi | 84% | 2497 fps | 99% |
| Somchem S321 | <<locked>> | 92% | 41,872 psi | 89% | 2615 fps | 96.8% |
| Somchem S335 | <<locked>> | 96% | 41,437 psi | 88% | 2543 fps | 99.1% |
| Vihtavuori N120 | <<locked>> | 84% | 42,395 psi | 90% | 2497 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 40,698 psi | 86% | 2507 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 40,393 psi | 86% | 2510 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,640 psi | 86% | 2598 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 98% | 40,698 psi | 86% | 2569 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 94% | 42,018 psi | 89% | 2585 fps | 96.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,018 psi | 89% | 2608 fps | 98.6% |
| Winchester 748 | <<locked>> | 94% | 40,016 psi | 85% | 2615 fps | 96.9% |
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% | 24,439 psi | 52% | 2195 fps | 96.1% |
| Accurate 2460 | <<locked>> | 84% | 30,632 psi | 65% | 2372 fps | 95.5% |
| Accurate 2495 | <<locked>> | 88% | 21,683 psi | 46% | 2192 fps | 95.2% |
| Accurate 2520 | 40.1 gr | 88% | 31,314 psi | 66% | 2421 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 28,892 psi | 61% | 2398 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 35,331 psi | 75% | 2362 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 80% | 35,766 psi | 76% | 2369 fps | 96.5% |
| ADI AR 2207 | <<locked>> | 80% | 36,535 psi | 78% | 2441 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,242 psi | 68% | 2415 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 92% | 39,073 psi | 83% | 2536 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 22,800 psi | 48% | 2211 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,428 psi | 62% | 2333 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,362 psi | 79% | 2444 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,460 psi | 71% | 2346 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 88% | 36,782 psi | 78% | 2444 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 92% | 35,636 psi | 76% | 2526 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 29,022 psi | 62% | 2336 fps | 96.1% |
| Hodgdon H335 | <<locked>> | 82% | 31,705 psi | 67% | 2405 fps | 96% |
| Hodgdon H4198 | <<locked>> | 80% | 39,465 psi | 84% | 2454 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,075 psi | 47% | 1434 fps | 100% |
| IMR 3031 | 35.1 gr | 84% | 25,324 psi | 54% | 2290 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 32,721 psi | 69% | 2356 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 92% | 39,073 psi | 83% | 2536 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 34,055 psi | 72% | 2448 fps | 95.9% |
| Lovex D073.5 | <<locked>> | 86% | 33,315 psi | 71% | 2431 fps | 95% |
| Lovex D073.6 | <<locked>> | 92% | 32,155 psi | 68% | 2454 fps | 95.5% |
| Lovex S062 | <<locked>> | 98% | 37,086 psi | 79% | 2520 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 32,314 psi | 69% | 2392 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 39,073 psi | 83% | 2546 fps | 95.8% |
| Norma 202 | <<locked>> | 88% | 29,747 psi | 63% | 2362 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,147 psi | 45% | 1460 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 33,431 psi | 71% | 2421 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 88% | 31,125 psi | 66% | 2375 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 98% | 39,088 psi | 83% | 2539 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 80% | 34,055 psi | 72% | 2448 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 32,155 psi | 68% | 2454 fps | 95.5% |
| Shooters World Precision | <<locked>> | 98% | 37,086 psi | 79% | 2520 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 39,015 psi | 83% | 2497 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,132 psi | 85% | 2267 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 32,300 psi | 69% | 2411 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,111 psi | 66% | 2359 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 30,371 psi | 64% | 2293 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 27,833 psi | 59% | 2251 fps | 95.6% |
| Somchem S321 | <<locked>> | 90% | 38,856 psi | 82% | 2559 fps | 95.9% |
| Somchem S335 | <<locked>> | 84% | 26,948 psi | 57% | 2234 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 36,927 psi | 78% | 2408 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,587 psi | 61% | 2260 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 24,613 psi | 52% | 2165 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 84% | 22,234 psi | 47% | 2172 fps | 95% |
| Vihtavuori N140 | <<locked>> | 88% | 28,224 psi | 60% | 2303 fps | 95% |
| Vihtavuori N530 | <<locked>> | 92% | 38,914 psi | 83% | 2530 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 92% | 31,082 psi | 66% | 2388 fps | 95.6% |
| Winchester 748 | 40.7 gr | 90% | 34,476 psi | 73% | 2497 fps | 95.1% |
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 53 powders for .30-40 Krag loaded with the .308 | 150gr | Barnes RRLP. IMR 3031 delivers the highest muzzle velocity at 2,677 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,677 fps. Accurate 2495 gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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. IMR 3031, Winchester 748, Accurate 2520 rank at the top here: for .30-40 Krag with the .308 | 150gr | Barnes RRLP they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.