Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 136gr | Geco ZERO bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Alliant Power Pro 2000-MR and Hodgdon LEVERevolution.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 47,007 psi | 85% | 2972 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 48,428 psi | 88% | 3038 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 49,197 psi | 89% | 3071 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 49,676 psi | 90% | 3100 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 49,110 psi | 89% | 3114 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 48,211 psi | 87% | 2923 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 48,631 psi | 88% | 2943 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 92% | 49,298 psi | 89% | 3104 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 96% | 47,500 psi | 86% | 3045 fps | 97.9% |
| ADI AR 2219 | <<locked>> | 82% | 47,529 psi | 86% | 3045 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 48,849 psi | 89% | 3061 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 90% | 47,630 psi | 86% | 3054 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 49,763 psi | 90% | 3173 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 48,733 psi | 88% | 3202 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 48,965 psi | 89% | 3117 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 84% | 47,398 psi | 86% | 2992 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 46,818 psi | 85% | 3081 fps | 98% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,528 psi | 84% | 3166 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 47,050 psi | 85% | 2917 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 48,950 psi | 89% | 3110 fps | 97.9% |
| Bofors RP3 | <<locked>> | 98% | 48,689 psi | 88% | 3123 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 88% | 48,298 psi | 88% | 3002 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 90% | 47,007 psi | 85% | 3087 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 88% | 48,530 psi | 88% | 3179 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 86% | 49,342 psi | 90% | 3074 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 47,094 psi | 85% | 3045 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 47,543 psi | 86% | 3077 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 92% | 49,632 psi | 90% | 3117 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 36,579 psi | 66% | 2867 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 47,834 psi | 87% | 3140 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,605 psi | 61% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 48,341 psi | 88% | 3071 fps | 99% |
| IMR 3031 | <<locked>> | 92% | 48,095 psi | 87% | 3110 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 46,702 psi | 85% | 3022 fps | 98% |
| IMR 4198 | <<locked>> | 84% | 48,211 psi | 87% | 2953 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 47,950 psi | 87% | 3120 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 90% | 48,849 psi | 89% | 3061 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 86% | 48,472 psi | 88% | 3045 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 47,456 psi | 86% | 3077 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 47,253 psi | 86% | 2982 fps | 98.4% |
| Lovex S062 | <<locked>> | 96% | 48,936 psi | 89% | 3081 fps | 99.5% |
| Norma 201 | <<locked>> | 92% | 47,834 psi | 87% | 3048 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 48,269 psi | 88% | 3064 fps | 100% |
| Norma 203B | <<locked>> | 96% | 49,095 psi | 89% | 3127 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 96% | 49,327 psi | 90% | 3146 fps | 98.7% |
| Ramshot TAC | <<locked>> | 90% | 49,530 psi | 90% | 3064 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 90% | 48,385 psi | 88% | 3094 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 47,224 psi | 86% | 3005 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,852 psi | 61% | 1936 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 48,791 psi | 89% | 3054 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 49,052 psi | 89% | 3199 fps | 98.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 49,806 psi | 90% | 3241 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 48,907 psi | 89% | 3041 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 48,370 psi | 88% | 3045 fps | 99.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 48,269 psi | 88% | 3107 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 47,456 psi | 86% | 3077 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 48,936 psi | 89% | 3081 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 48,863 psi | 89% | 3015 fps | 99.2% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 48,022 psi | 87% | 3054 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 47,718 psi | 87% | 3127 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 48,341 psi | 88% | 3009 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 47,123 psi | 86% | 3031 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 47,747 psi | 87% | 3068 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 47,572 psi | 86% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 46,992 psi | 85% | 2949 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 46,470 psi | 84% | 3045 fps | 99.4% |
| Somchem S335 | <<locked>> | 92% | 49,371 psi | 90% | 2999 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 46,557 psi | 84% | 3028 fps | 98.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 49,647 psi | 90% | 3117 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,230 psi | 64% | 2917 fps | 97.6% |
| Vihtavuori N130 | <<locked>> | 86% | 47,674 psi | 87% | 2936 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 47,427 psi | 86% | 2946 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 46,789 psi | 85% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 48,660 psi | 88% | 3035 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 47,718 psi | 87% | 3041 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 42,177 psi | 77% | 2982 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 90% | 49,443 psi | 90% | 3064 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 94% | 47,079 psi | 85% | 3035 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 43,918 psi | 80% | 2976 fps | 98.3% |
| Winchester 748 | <<locked>> | 90% | 47,950 psi | 87% | 3107 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 47,094 psi | 85% | 3077 fps | 98.9% |
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 2015 | <<locked>> | 80% | 36,376 psi | 66% | 2776 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 39,291 psi | 71% | 2871 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 28,369 psi | 51% | 2651 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 34,708 psi | 63% | 2812 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 26,905 psi | 49% | 2625 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 80% | 45,426 psi | 82% | 2877 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 45,788 psi | 83% | 2894 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 35,650 psi | 65% | 2818 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 36,927 psi | 67% | 2825 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 44,367 psi | 81% | 2989 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,549 psi | 65% | 2789 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 33,779 psi | 61% | 2802 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 40,712 psi | 74% | 2995 fps | 97.8% |
| Alliant Power Pro 2000-MR | 50.5 gr | 88% | 39,769 psi | 72% | 3009 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 30,966 psi | 56% | 2726 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 41,568 psi | 75% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 36,042 psi | 65% | 2851 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 35,360 psi | 64% | 2907 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,947 psi | 80% | 2864 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 39,827 psi | 72% | 2930 fps | 95.7% |
| Bofors RP3 | <<locked>> | 84% | 29,965 psi | 54% | 2717 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,739 psi | 68% | 2789 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,156 psi | 60% | 2792 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 36,579 psi | 66% | 2920 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 40,335 psi | 73% | 2910 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 40,973 psi | 74% | 2930 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 41,452 psi | 75% | 2959 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 33,678 psi | 61% | 2776 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 34,229 psi | 62% | 2808 fps | 95.4% |
| Hodgdon LEVERevolution | 46.1 gr | 82% | 32,053 psi | 58% | 2782 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,845 psi | 45% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 32,590 psi | 59% | 2726 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 32,097 psi | 58% | 2789 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 36,158 psi | 66% | 2802 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 42,801 psi | 78% | 2861 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 34,432 psi | 62% | 2828 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 35,549 psi | 65% | 2789 fps | 97% |
| Lovex D073.5 | <<locked>> | 80% | 39,117 psi | 71% | 2871 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 31,198 psi | 57% | 2736 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 34,737 psi | 63% | 2713 fps | 95.3% |
| Lovex S062 | <<locked>> | 82% | 31,111 psi | 56% | 2694 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 32,590 psi | 59% | 2717 fps | 96.2% |
| Norma 202 | <<locked>> | 80% | 32,692 psi | 59% | 2743 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 35,346 psi | 64% | 2841 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 86% | 35,201 psi | 64% | 2848 fps | 95.2% |
| Ramshot TAC | <<locked>> | 86% | 43,381 psi | 79% | 2946 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 34,185 psi | 62% | 2792 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 38,740 psi | 70% | 2835 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,947 psi | 45% | 1732 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,943 psi | 72% | 2887 fps | 99.1% |
| ReloadSwiss RS 52 | 47.8 gr | 86% | 37,304 psi | 68% | 2953 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 29,008 psi | 53% | 2733 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 35,955 psi | 65% | 2782 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 80% | 30,966 psi | 56% | 2664 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 88% | 32,053 psi | 58% | 2766 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,198 psi | 57% | 2736 fps | 97.6% |
| Shooters World Precision | <<locked>> | 82% | 31,111 psi | 56% | 2694 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,453 psi | 77% | 2897 fps | 98.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 44,701 psi | 81% | 2995 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 34,258 psi | 62% | 2831 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,322 psi | 77% | 2904 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 40,959 psi | 74% | 2910 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 34,432 psi | 62% | 2785 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,548 psi | 63% | 2697 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,992 psi | 51% | 2546 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 37,681 psi | 68% | 2864 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 33,924 psi | 62% | 2700 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 35,302 psi | 64% | 2795 fps | 95.4% |
| Somchem S355 | <<locked>> | 88% | 33,518 psi | 61% | 2782 fps | 95.7% |
| Somchem S365 | <<locked>> | 96% | 31,067 psi | 56% | 2799 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 39,421 psi | 72% | 2789 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,563 psi | 63% | 2707 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 29,472 psi | 53% | 2667 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 30,821 psi | 56% | 2671 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 84% | 27,963 psi | 51% | 2605 fps | 95% |
| Vihtavuori N160 | <<locked>> | 98% | 39,421 psi | 72% | 2923 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 35,128 psi | 64% | 2776 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 29,573 psi | 54% | 2654 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 33,634 psi | 61% | 2743 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 33,968 psi | 62% | 2815 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 33,301 psi | 60% | 2779 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 81 powders for 7.5 x 55 Swiss loaded with the .308 | 136gr | Geco ZERO. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,241 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 81 of the 81 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 136.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, 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. ReloadSwiss RS 52, Alliant Power Pro 2000-MR, Hodgdon LEVERevolution rank at the top here: for 7.5 x 55 Swiss with the .308 | 136gr | Geco ZERO 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.