Load Specifications
Load data in caliber 7 x 57 with .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-17.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 49,850 psi | 88% | 2664 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 47,979 psi | 85% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 49,269 psi | 87% | 2736 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 48,109 psi | 85% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 50,212 psi | 89% | 2835 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 84% | 48,776 psi | 86% | 2746 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 90% | 49,734 psi | 88% | 2743 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 84% | 51,082 psi | 90% | 2753 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 82% | 48,080 psi | 85% | 2690 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 47,834 psi | 85% | 2841 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 49,443 psi | 87% | 2769 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 88% | 49,937 psi | 88% | 2782 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 98% | 48,834 psi | 86% | 2838 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 49,487 psi | 87% | 2874 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,999 psi | 65% | 2618 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,234 psi | 73% | 2769 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 47,979 psi | 85% | 2749 fps | 98.5% |
| Bofors RP3 | <<locked>> | 90% | 49,487 psi | 87% | 2776 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 49,676 psi | 88% | 2687 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 50,053 psi | 88% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 50,604 psi | 89% | 2785 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 96% | 50,024 psi | 88% | 2828 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 84% | 49,240 psi | 87% | 2756 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,254 psi | 85% | 2772 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 48,182 psi | 85% | 2785 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 63% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 50,444 psi | 89% | 2762 fps | 99.7% |
| IMR 3031 | <<locked>> | 84% | 48,704 psi | 86% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 49,197 psi | 87% | 2726 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,269 psi | 87% | 2700 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,052 psi | 87% | 2726 fps | 95.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,010 psi | 90% | 2828 fps | 98.9% |
| IMR 4895 | <<locked>> | 88% | 51,126 psi | 90% | 2815 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 84% | 51,082 psi | 90% | 2753 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 86% | 51,140 psi | 90% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 48,689 psi | 86% | 2677 fps | 99.3% |
| Lovex S062 | <<locked>> | 88% | 48,994 psi | 87% | 2730 fps | 99.9% |
| Lovex S065 | <<locked>> | 94% | 48,182 psi | 85% | 2717 fps | 97.1% |
| Lovex S070 | <<locked>> | 96% | 48,950 psi | 87% | 2749 fps | 96.1% |
| Norma 201 | <<locked>> | 86% | 50,908 psi | 90% | 2746 fps | 99.9% |
| Norma 202 | <<locked>> | 84% | 48,109 psi | 85% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 88% | 49,168 psi | 87% | 2772 fps | 99.4% |
| Norma URP | <<locked>> | 98% | 49,748 psi | 88% | 2825 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 88% | 49,472 psi | 87% | 2795 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 98% | 48,863 psi | 86% | 2818 fps | 96.9% |
| Ramshot TAC | <<locked>> | 84% | 51,097 psi | 90% | 2759 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 50,589 psi | 89% | 2779 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,708 psi | 63% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 47,863 psi | 85% | 2713 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 49,748 psi | 88% | 2841 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 49,588 psi | 88% | 2884 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 49,806 psi | 88% | 2854 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 50,183 psi | 89% | 2877 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 82% | 48,921 psi | 86% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 48,124 psi | 85% | 2694 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 92% | 49,661 psi | 88% | 2772 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 48,182 psi | 85% | 2717 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 51,140 psi | 90% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 48,994 psi | 87% | 2730 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 96% | 48,950 psi | 87% | 2749 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 51,169 psi | 90% | 2831 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 49,458 psi | 87% | 2736 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 50,227 psi | 89% | 2766 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 49,385 psi | 87% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 49,414 psi | 87% | 2651 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 48,863 psi | 86% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 48,936 psi | 87% | 2730 fps | 99.2% |
| Somchem S355 | <<locked>> | 92% | 49,980 psi | 88% | 2769 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,572 psi | 84% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 49,617 psi | 88% | 2638 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 50,778 psi | 90% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 48,385 psi | 86% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 48,327 psi | 85% | 2707 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 96% | 48,878 psi | 86% | 2772 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 82% | 48,066 psi | 85% | 2697 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 88% | 49,893 psi | 88% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 48,138 psi | 85% | 2776 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,943 psi | 71% | 2694 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 49,226 psi | 87% | 2753 fps | 99.7% |
| Winchester 748 | <<locked>> | 84% | 51,053 psi | 90% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 50,024 psi | 88% | 2828 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,098 psi | 59% | 2595 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 49,980 psi | 88% | 2772 fps | 99.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 46,760 psi | 83% | 2618 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,421 psi | 70% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,267 psi | 82% | 2687 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,275 psi | 66% | 2526 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 35,476 psi | 63% | 2549 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 43,091 psi | 76% | 2641 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 36,666 psi | 65% | 2490 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,150 psi | 80% | 2651 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 44,933 psi | 79% | 2641 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,870 psi | 69% | 2654 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,056 psi | 64% | 2510 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,856 psi | 69% | 2572 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,042 psi | 64% | 2566 fps | 95.2% |
| Alliant Reloder-17 | 43.8 gr | 82% | 33,185 psi | 59% | 2520 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,735 psi | 58% | 2510 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,435 psi | 68% | 2703 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,192 psi | 75% | 2641 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 35,563 psi | 63% | 2510 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,775 psi | 83% | 2638 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,642 psi | 77% | 2667 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 82% | 39,044 psi | 69% | 2566 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 46,659 psi | 82% | 2769 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 43,453 psi | 77% | 2651 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,995 psi | 55% | 2408 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,305 psi | 69% | 2618 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,165 psi | 46% | 1539 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,568 psi | 73% | 2602 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 42,888 psi | 76% | 2651 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,479 psi | 68% | 2523 fps | 96.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,340 psi | 82% | 2648 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,166 psi | 82% | 2671 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 36,666 psi | 65% | 2559 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,769 psi | 70% | 2602 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 45,150 psi | 80% | 2651 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 41,901 psi | 74% | 2618 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,076 psi | 76% | 2575 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 38,130 psi | 67% | 2526 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 40,306 psi | 71% | 2569 fps | 95% |
| Lovex S070 | <<locked>> | 94% | 46,035 psi | 81% | 2697 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 42,221 psi | 75% | 2595 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 42,351 psi | 75% | 2605 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,218 psi | 68% | 2559 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 35,868 psi | 63% | 2549 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 37,536 psi | 66% | 2566 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 42,670 psi | 75% | 2700 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 44,788 psi | 79% | 2648 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,208 psi | 78% | 2667 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,556 psi | 47% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,078 psi | 80% | 2661 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,495 psi | 72% | 2671 fps | 97.4% |
| ReloadSwiss RS 60 | 42.7 gr | 80% | 32,996 psi | 58% | 2530 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,739 psi | 67% | 2621 fps | 95.5% |
| ReloadSwiss RS 70 | 49.9 gr | 92% | 40,828 psi | 72% | 2690 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 46,006 psi | 81% | 2638 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,132 psi | 71% | 2546 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 33,417 psi | 59% | 2454 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,306 psi | 71% | 2569 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,901 psi | 74% | 2618 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,130 psi | 67% | 2526 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 46,035 psi | 81% | 2697 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,461 psi | 61% | 2503 fps | 96% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,105 psi | 76% | 2621 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,510 psi | 73% | 2605 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,410 psi | 77% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,027 psi | 64% | 2418 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,236 psi | 76% | 2556 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,960 psi | 76% | 2625 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 34,490 psi | 61% | 2464 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 28,369 psi | 50% | 2392 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 43,700 psi | 77% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,305 psi | 69% | 2533 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,030 psi | 71% | 2539 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,648 psi | 58% | 2402 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 37,565 psi | 66% | 2552 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 45,092 psi | 80% | 2648 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,479 psi | 68% | 2526 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,999 psi | 65% | 2556 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 35,070 psi | 62% | 2585 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,140 psi | 55% | 2375 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 44,657 psi | 79% | 2690 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 46,934 psi | 83% | 2772 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,169 psi | 55% | 2533 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,930 psi | 72% | 2612 fps | 98.5% |
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 83 powders for 7 x 57 loaded with the .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,884 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 x 57 with the .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC 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.