Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 170gr | Impala RNFP KO bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and ReloadSwiss RS 70.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 48,979 psi | 89% | 2687 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 49,385 psi | 90% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,297 psi | 86% | 2651 fps | 95.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 38,348 psi | 70% | 2618 fps | 95.8% |
| Accurate 4064 | <<locked>> | 88% | 48,747 psi | 88% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 49,501 psi | 90% | 2838 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 48,559 psi | 88% | 2743 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 49,298 psi | 89% | 2743 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 47,776 psi | 87% | 2697 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 47,761 psi | 87% | 2677 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 47,152 psi | 86% | 2844 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 49,139 psi | 89% | 2769 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 49,588 psi | 90% | 2785 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 48,153 psi | 87% | 2838 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 94% | 48,573 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,101 psi | 67% | 2648 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,886 psi | 74% | 2795 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 47,659 psi | 86% | 2753 fps | 99.3% |
| Bofors RP3 | <<locked>> | 90% | 49,617 psi | 90% | 2785 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 49,821 psi | 90% | 2740 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 49,501 psi | 90% | 2677 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 49,705 psi | 90% | 2776 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 47,355 psi | 86% | 2740 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 96% | 49,023 psi | 89% | 2828 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 48,936 psi | 89% | 2753 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,500 psi | 86% | 2769 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 47,471 psi | 86% | 2785 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 49,472 psi | 90% | 2854 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,476 psi | 64% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 49,719 psi | 90% | 2753 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 48,588 psi | 88% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 48,979 psi | 89% | 2726 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,066 psi | 89% | 2697 fps | 97.1% |
| IMR 4350 | <<locked>> | 98% | 49,559 psi | 90% | 2766 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,472 psi | 88% | 2723 fps | 96.9% |
| IMR 4831 | <<locked>> | 98% | 47,123 psi | 86% | 2782 fps | 99.2% |
| IMR 4895 | <<locked>> | 86% | 47,935 psi | 87% | 2769 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 47,776 psi | 87% | 2697 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 48,124 psi | 87% | 2726 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 48,704 psi | 88% | 2674 fps | 99.8% |
| Lovex S062 | <<locked>> | 88% | 49,095 psi | 89% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 48,240 psi | 88% | 2726 fps | 98.2% |
| Lovex S070 | <<locked>> | 96% | 48,501 psi | 88% | 2753 fps | 97.3% |
| Norma 201 | <<locked>> | 84% | 48,211 psi | 87% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 84% | 47,950 psi | 87% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 88% | 48,878 psi | 89% | 2772 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 48,892 psi | 89% | 2828 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 48,457 psi | 88% | 2792 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 98% | 47,892 psi | 87% | 2818 fps | 97.9% |
| Ramshot TAC | <<locked>> | 82% | 47,659 psi | 86% | 2707 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 47,036 psi | 85% | 2726 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,143 psi | 66% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 47,790 psi | 87% | 2720 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 48,907 psi | 89% | 2841 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 48,472 psi | 88% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 48,863 psi | 89% | 2858 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 49,313 psi | 89% | 2877 fps | 99% |
| Rottweil R 902 | <<locked>> | 86% | 48,704 psi | 88% | 2697 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 49,414 psi | 90% | 2772 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 49,821 psi | 90% | 2740 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 48,240 psi | 88% | 2726 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 48,124 psi | 87% | 2726 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 49,095 psi | 89% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 48,501 psi | 88% | 2753 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 47,239 psi | 86% | 2779 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 49,240 psi | 89% | 2736 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 49,763 psi | 90% | 2762 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 49,385 psi | 90% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 48,791 psi | 89% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,080 psi | 87% | 2674 fps | 96.9% |
| Somchem S335 | <<locked>> | 84% | 48,907 psi | 89% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 48,689 psi | 88% | 2730 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 46,963 psi | 85% | 2723 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,717 psi | 85% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 49,414 psi | 90% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 47,514 psi | 86% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 48,254 psi | 88% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 47,892 psi | 87% | 2703 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 48,109 psi | 87% | 2769 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 82% | 48,080 psi | 87% | 2697 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 49,501 psi | 90% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 47,456 psi | 86% | 2782 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,001 psi | 73% | 2726 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 48,515 psi | 88% | 2749 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 47,253 psi | 86% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 49,023 psi | 89% | 2828 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,562 psi | 61% | 2654 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 49,327 psi | 90% | 2769 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 41,104 psi | 75% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,296 psi | 84% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 44,483 psi | 81% | 2598 fps | 95% |
| Accurate 3100 | <<locked>> | 98% | 35,926 psi | 65% | 2566 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,769 psi | 70% | 2559 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 31,720 psi | 58% | 2484 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 43,308 psi | 79% | 2651 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 36,854 psi | 67% | 2503 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,107 psi | 82% | 2651 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 44,889 psi | 81% | 2635 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,015 psi | 71% | 2677 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,651 psi | 67% | 2536 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,233 psi | 71% | 2592 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,387 psi | 59% | 2487 fps | 95.5% |
| Alliant Reloder-17 | 43.7 gr | 80% | 31,763 psi | 58% | 2507 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,224 psi | 51% | 2405 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 94% | 33,794 psi | 61% | 2618 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,887 psi | 76% | 2648 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 36,376 psi | 66% | 2543 fps | 99% |
| Bofors RP7 | <<locked>> | 90% | 44,469 psi | 81% | 2644 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,804 psi | 85% | 2635 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,830 psi | 80% | 2680 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,159 psi | 67% | 2539 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 90% | 40,843 psi | 74% | 2677 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 43,656 psi | 79% | 2661 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,745 psi | 49% | 2300 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,218 psi | 71% | 2631 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 92% | 43,424 psi | 79% | 2740 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 48% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,553 psi | 75% | 2608 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 42,946 psi | 78% | 2651 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,595 psi | 70% | 2533 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,191 psi | 75% | 2549 fps | 95.1% |
| IMR 4350 | <<locked>> | 94% | 43,990 psi | 80% | 2667 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 43,308 psi | 79% | 2628 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 31,038 psi | 56% | 2444 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 40,118 psi | 73% | 2621 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 45,107 psi | 82% | 2651 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 42,337 psi | 77% | 2628 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,308 psi | 79% | 2579 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 38,885 psi | 71% | 2546 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 36,274 psi | 66% | 2490 fps | 95.3% |
| Lovex S070 | <<locked>> | 90% | 40,930 psi | 74% | 2612 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 43,004 psi | 78% | 2608 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 42,685 psi | 77% | 2612 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,682 psi | 70% | 2582 fps | 98.7% |
| Norma URP | <<locked>> | 84% | 32,300 psi | 59% | 2484 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 37,782 psi | 69% | 2592 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 37,724 psi | 68% | 2615 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 44,860 psi | 81% | 2654 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,179 psi | 80% | 2677 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 49% | 1549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,726 psi | 72% | 2566 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,335 psi | 73% | 2684 fps | 98.6% |
| ReloadSwiss RS 60 | 43.7 gr | 80% | 33,620 psi | 61% | 2569 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,533 psi | 61% | 2546 fps | 95.7% |
| ReloadSwiss RS 70 | 48.8 gr | 88% | 35,984 psi | 65% | 2602 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 41,060 psi | 75% | 2562 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 34,403 psi | 62% | 2490 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 90% | 44,469 psi | 81% | 2644 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,274 psi | 66% | 2490 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,337 psi | 77% | 2628 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,885 psi | 71% | 2546 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 90% | 40,930 psi | 74% | 2612 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,795 psi | 63% | 2530 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,439 psi | 79% | 2635 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,539 psi | 75% | 2618 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,874 psi | 80% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,550 psi | 66% | 2428 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 42,351 psi | 77% | 2575 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 43,758 psi | 79% | 2556 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,685 psi | 77% | 2628 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 35,288 psi | 64% | 2497 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 26,034 psi | 47% | 2343 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 80% | 43,961 psi | 80% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,914 psi | 72% | 2539 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,335 psi | 73% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,373 psi | 61% | 2431 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 31,647 psi | 57% | 2428 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 45,034 psi | 82% | 2644 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,073 psi | 71% | 2546 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,025 psi | 60% | 2487 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 29,878 psi | 54% | 2480 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,791 psi | 54% | 2356 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 44,309 psi | 80% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 40,843 psi | 74% | 2677 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,224 psi | 51% | 2477 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,857 psi | 74% | 2621 fps | 99.4% |
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 105 powders for 7.5 x 55 Swiss loaded with the .308 | 170gr | Impala RNFP KO. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,877 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,877 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, Alliant Reloder-17, ReloadSwiss RS 70 rank at the top here: for 7.5 x 55 Swiss with the .308 | 170gr | Impala RNFP KO they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.