Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 152gr | Lehigh Defense Controlled Chaos 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 Power Pro 2000-MR and ReloadSwiss RS 52.
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>> | 86% | 48,298 psi | 88% | 2812 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 49,661 psi | 90% | 2881 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 48,486 psi | 88% | 2874 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 47,529 psi | 86% | 2890 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 48,225 psi | 88% | 2917 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,439 psi | 79% | 2910 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 88% | 47,297 psi | 86% | 2897 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 94% | 48,254 psi | 88% | 2894 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 49,806 psi | 90% | 2907 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 48,979 psi | 89% | 2887 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 47,819 psi | 87% | 2959 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 49,647 psi | 90% | 3058 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 47,384 psi | 86% | 2917 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 48,515 psi | 88% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 48,051 psi | 87% | 2933 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,932 psi | 80% | 2917 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 47,471 psi | 86% | 3022 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 46,543 psi | 84% | 2904 fps | 98.3% |
| Bofors RP3 | <<locked>> | 94% | 47,094 psi | 85% | 2927 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 49,168 psi | 89% | 2844 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 48,153 psi | 87% | 2933 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 49,559 psi | 90% | 3025 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 82% | 47,050 psi | 85% | 2858 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 47,906 psi | 87% | 2884 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 48,689 psi | 88% | 2933 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 88% | 47,703 psi | 87% | 2910 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,176 psi | 73% | 2799 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 49,197 psi | 89% | 2989 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,519 psi | 63% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 49,008 psi | 89% | 2913 fps | 99.6% |
| IMR 3031 | <<locked>> | 90% | 49,806 psi | 90% | 2949 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 47,805 psi | 87% | 2874 fps | 98.9% |
| IMR 4198 | <<locked>> | 82% | 48,907 psi | 89% | 2782 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,887 psi | 76% | 2858 fps | 97.5% |
| IMR 4895 | <<locked>> | 92% | 49,197 psi | 89% | 2969 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 88% | 49,806 psi | 90% | 2907 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 49,516 psi | 90% | 2887 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 49,037 psi | 89% | 2923 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,109 psi | 87% | 2831 fps | 99.2% |
| Lovex S062 | <<locked>> | 92% | 47,195 psi | 86% | 2877 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,298 psi | 89% | 2910 fps | 97.4% |
| Norma 201 | <<locked>> | 90% | 49,153 psi | 89% | 2897 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 49,487 psi | 90% | 2907 fps | 100% |
| Norma 203B | <<locked>> | 92% | 47,224 psi | 86% | 2923 fps | 99.2% |
| Norma URPᴾ | <<locked>> | 100% | 43,816 psi | 80% | 2907 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 92% | 47,355 psi | 86% | 2943 fps | 99.1% |
| Ramshot TAC | <<locked>> | 86% | 47,137 psi | 86% | 2861 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 49,269 psi | 89% | 2940 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 47,950 psi | 87% | 2854 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,679 psi | 63% | 1827 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 49,588 psi | 90% | 2894 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 49,734 psi | 90% | 2913 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 47,282 psi | 86% | 2995 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 47,485 psi | 86% | 3031 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,482 psi | 79% | 2930 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 44,976 psi | 82% | 2949 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 86% | 47,558 psi | 86% | 2838 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 49,661 psi | 90% | 2894 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 46,978 psi | 85% | 2913 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,298 psi | 89% | 2910 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 49,037 psi | 89% | 2923 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 47,195 psi | 86% | 2877 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 49,342 psi | 90% | 2858 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 48,892 psi | 89% | 2979 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 48,994 psi | 89% | 2838 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 48,167 psi | 87% | 2884 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 48,820 psi | 89% | 2920 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 48,385 psi | 88% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 47,921 psi | 87% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 49,327 psi | 90% | 2854 fps | 95.9% |
| Somchem S321 | <<locked>> | 84% | 47,529 psi | 86% | 2890 fps | 99.9% |
| Somchem S335 | <<locked>> | 88% | 47,514 psi | 86% | 2795 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 47,543 psi | 86% | 2881 fps | 99.1% |
| Somchem S355 | <<locked>> | 96% | 47,819 psi | 87% | 2913 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,001 psi | 71% | 2854 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 84% | 48,399 psi | 88% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 48,327 psi | 88% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 48,501 psi | 88% | 2864 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 47,007 psi | 85% | 2835 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 49,124 psi | 89% | 2897 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,296 psi | 84% | 2904 fps | 98% |
| Vihtavuori N530 | <<locked>> | 86% | 47,166 psi | 86% | 2854 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 92% | 48,327 psi | 88% | 2881 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,411 psi | 82% | 2913 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,747 psi | 87% | 2894 fps | 99.6% |
| Winchester 748 | <<locked>> | 88% | 49,168 psi | 89% | 2953 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 47,471 psi | 86% | 2963 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 48,080 psi | 87% | 2927 fps | 99.6% |
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% | 40,103 psi | 73% | 2677 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,424 psi | 79% | 2779 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,547 psi | 59% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,682 psi | 70% | 2730 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 30,792 psi | 56% | 2569 fps | 99.2% |
| Accurate 4350 | <<locked>> | 94% | 35,302 psi | 64% | 2743 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 36,767 psi | 67% | 2684 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 33,388 psi | 61% | 2585 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,725 psi | 70% | 2700 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 37,579 psi | 68% | 2703 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,599 psi | 81% | 2900 fps | 99.2% |
| Alliant Power Pro 2000-MR | 45.8 gr | 82% | 35,462 psi | 64% | 2749 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,139 psi | 55% | 2549 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,600 psi | 83% | 2779 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 32,721 psi | 59% | 2612 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 36,782 psi | 67% | 2756 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 32,039 psi | 58% | 2667 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,636 psi | 65% | 2677 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 29,515 psi | 54% | 2549 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,930 psi | 74% | 2697 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,811 psi | 67% | 2717 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,306 psi | 73% | 2844 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 80% | 44,193 psi | 80% | 2808 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,802 psi | 81% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 37,550 psi | 68% | 2717 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 36,970 psi | 67% | 2697 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 31,299 psi | 57% | 2589 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,054 psi | 60% | 2657 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,483 psi | 46% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,723 psi | 65% | 2651 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 35,708 psi | 65% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,895 psi | 60% | 2566 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 46,195 psi | 84% | 2740 fps | 100% |
| IMR 4831 | <<locked>> | 94% | 34,360 psi | 62% | 2690 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 33,460 psi | 61% | 2644 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 38,725 psi | 70% | 2700 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 43,279 psi | 79% | 2785 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 34,954 psi | 63% | 2664 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 37,739 psi | 68% | 2628 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 32,503 psi | 59% | 2572 fps | 97.3% |
| Lovex S065 | <<locked>> | 94% | 41,002 psi | 74% | 2756 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 36,085 psi | 65% | 2641 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 35,940 psi | 65% | 2657 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 32,126 psi | 58% | 2598 fps | 95.8% |
| Norma URP | <<locked>> | 94% | 36,260 psi | 66% | 2743 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 31,778 psi | 58% | 2605 fps | 95.2% |
| Ramshot TAC | <<locked>> | 82% | 41,249 psi | 75% | 2746 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,637 psi | 68% | 2717 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,206 psi | 77% | 2749 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 47% | 1634 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,700 psi | 79% | 2792 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 43,642 psi | 79% | 2805 fps | 95.3% |
| ReloadSwiss RS 52 | 43.3 gr | 80% | 33,663 psi | 61% | 2700 fps | 95.6% |
| ReloadSwiss RS 60 | 44 gr | 80% | 28,137 psi | 51% | 2562 fps | 96.7% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 35,563 psi | 65% | 2756 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 39,421 psi | 72% | 2828 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 39,740 psi | 72% | 2697 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 34,287 psi | 62% | 2592 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 29,617 psi | 54% | 2543 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 41,002 psi | 74% | 2756 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,954 psi | 63% | 2664 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 32,503 psi | 59% | 2572 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,151 psi | 84% | 2802 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,111 psi | 56% | 2595 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,296 psi | 84% | 2795 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 39,175 psi | 71% | 2717 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,404 psi | 64% | 2654 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,956 psi | 69% | 2612 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,053 psi | 56% | 2474 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 46,180 psi | 84% | 2805 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 41,452 psi | 75% | 2779 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 37,260 psi | 68% | 2612 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 36,201 psi | 66% | 2661 fps | 96.9% |
| Somchem S355 | <<locked>> | 80% | 28,935 psi | 53% | 2503 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 26,905 psi | 49% | 2526 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 43,062 psi | 78% | 2684 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,014 psi | 69% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,185 psi | 60% | 2592 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,127 psi | 62% | 2592 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 27,441 psi | 50% | 2441 fps | 96% |
| Vihtavuori N160 | <<locked>> | 92% | 35,853 psi | 65% | 2690 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 38,696 psi | 70% | 2697 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 32,648 psi | 59% | 2579 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 37,217 psi | 68% | 2749 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,240 psi | 55% | 2513 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 37,463 psi | 68% | 2736 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 44,686 psi | 81% | 2913 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,432 psi | 62% | 2651 fps | 97.2% |
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 106 powders for 7.5 x 55 Swiss loaded with the .308 | 152gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,785 fps to 3,058 fps. Accurate 4350 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 152.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for 7.5 x 55 Swiss with the .308 | 152gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-26, Hodgdon H4350 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.