Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 150gr | Barnes MRX BT bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and ReloadSwiss RS 60.
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% | 49,008 psi | 89% | 2844 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 46,949 psi | 85% | 2861 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 48,341 psi | 88% | 2897 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 48,211 psi | 87% | 2923 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 48,153 psi | 87% | 2940 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 40,770 psi | 74% | 2877 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 82% | 49,864 psi | 90% | 2795 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 48,182 psi | 87% | 2933 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 96% | 49,052 psi | 89% | 2923 fps | 98.8% |
| ADI AR 2219 | <<locked>> | 82% | 49,255 psi | 89% | 2913 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 47,529 psi | 86% | 2887 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 88% | 46,601 psi | 85% | 2877 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 48,617 psi | 88% | 2992 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 47,224 psi | 86% | 3028 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 47,906 psi | 87% | 2946 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 49,023 psi | 89% | 2854 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 48,617 psi | 88% | 2963 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 41,959 psi | 76% | 2890 fps | 97.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,341 psi | 88% | 3051 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 48,718 psi | 88% | 2792 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 47,456 psi | 86% | 2936 fps | 98.3% |
| Bofors RP3 | <<locked>> | 96% | 47,485 psi | 86% | 2953 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 46,992 psi | 85% | 2828 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 90% | 49,008 psi | 89% | 2966 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 47,181 psi | 86% | 3002 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 84% | 48,008 psi | 87% | 2894 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 49,139 psi | 89% | 2923 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 49,603 psi | 90% | 2966 fps | 98% |
| Hodgdon H4895 | <<locked>> | 90% | 48,530 psi | 88% | 2943 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,116 psi | 69% | 2772 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 46,630 psi | 85% | 2966 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,881 psi | 61% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 46,847 psi | 85% | 2894 fps | 99.3% |
| IMR 3031 | <<locked>> | 90% | 47,166 psi | 86% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 48,515 psi | 88% | 2904 fps | 98.9% |
| IMR 4198 | <<locked>> | 82% | 47,311 psi | 86% | 2779 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 39,320 psi | 71% | 2822 fps | 96.6% |
| IMR 4895 | <<locked>> | 94% | 49,777 psi | 90% | 2999 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 88% | 47,529 psi | 86% | 2887 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 84% | 46,833 psi | 85% | 2867 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 92% | 49,777 psi | 90% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 48,921 psi | 89% | 2861 fps | 99.2% |
| Lovex S062 | <<locked>> | 94% | 47,616 psi | 86% | 2904 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 46,702 psi | 85% | 2881 fps | 96.6% |
| Norma 201 | <<locked>> | 90% | 46,891 psi | 85% | 2877 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 47,065 psi | 85% | 2887 fps | 100% |
| Norma 203B | <<locked>> | 94% | 47,718 psi | 87% | 2949 fps | 99.2% |
| Norma URPᴾ | <<locked>> | 100% | 41,611 psi | 76% | 2877 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 48,022 psi | 87% | 2972 fps | 99.1% |
| Ramshot TAC | <<locked>> | 88% | 48,124 psi | 87% | 2894 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 47,007 psi | 85% | 2917 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 86% | 48,921 psi | 89% | 2887 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,229 psi | 62% | 1831 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 47,282 psi | 86% | 2874 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 47,268 psi | 86% | 2887 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 48,080 psi | 87% | 3028 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 48,283 psi | 88% | 3064 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 41,002 psi | 74% | 2894 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 88% | 47,950 psi | 87% | 2867 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 47,123 psi | 86% | 2871 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 98% | 47,384 psi | 86% | 2940 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 46,702 psi | 85% | 2881 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 49,777 psi | 90% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 47,616 psi | 86% | 2904 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 47,137 psi | 86% | 2838 fps | 99.4% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 49,603 psi | 90% | 2923 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 49,661 psi | 90% | 3009 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 46,920 psi | 85% | 2825 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 49,037 psi | 89% | 2917 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 49,821 psi | 90% | 2956 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 49,153 psi | 89% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 48,718 psi | 88% | 2825 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 48,370 psi | 88% | 2923 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 48,327 psi | 88% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 48,472 psi | 88% | 2913 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 48,341 psi | 88% | 2943 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,883 psi | 67% | 2822 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 49,342 psi | 90% | 2805 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 49,095 psi | 89% | 2815 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 48,965 psi | 89% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 47,601 psi | 86% | 2864 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 46,760 psi | 85% | 2877 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,135 psi | 80% | 2881 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 88% | 47,819 psi | 87% | 2884 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 94% | 48,965 psi | 89% | 2910 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 42,917 psi | 78% | 2887 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,571 psi | 83% | 2867 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 46,789 psi | 85% | 2933 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 49,066 psi | 89% | 2959 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% | 37,898 psi | 69% | 2657 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 41,104 psi | 75% | 2759 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 29,921 psi | 54% | 2556 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 36,477 psi | 66% | 2707 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 28,340 psi | 51% | 2533 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 35,186 psi | 64% | 2759 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 46,876 psi | 85% | 2749 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 34,824 psi | 63% | 2657 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 33,765 psi | 61% | 2612 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 46,209 psi | 84% | 2864 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,869 psi | 67% | 2677 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 80% | 35,404 psi | 64% | 2687 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,380 psi | 77% | 2877 fps | 98.8% |
| Alliant Power Pro 2000-MR | 46.3 gr | 84% | 35,969 psi | 65% | 2776 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 28,268 psi | 51% | 2520 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,381 psi | 79% | 2766 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 32,880 psi | 60% | 2635 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 96% | 37,144 psi | 67% | 2779 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 32,329 psi | 59% | 2694 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,658 psi | 83% | 2743 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 36,260 psi | 66% | 2710 fps | 95.5% |
| Bofors RP3 | <<locked>> | 82% | 29,341 psi | 53% | 2566 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,146 psi | 71% | 2680 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,563 psi | 63% | 2687 fps | 98.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 38,145 psi | 69% | 2815 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 80% | 42,177 psi | 77% | 2795 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,569 psi | 77% | 2812 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 37,681 psi | 68% | 2740 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 35,027 psi | 64% | 2671 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 31,575 psi | 57% | 2612 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,111 psi | 56% | 2625 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,237 psi | 46% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,982 psi | 62% | 2628 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 33,620 psi | 61% | 2680 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,170 psi | 60% | 2592 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 44,309 psi | 80% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 34,577 psi | 63% | 2717 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 31,517 psi | 57% | 2615 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 36,869 psi | 67% | 2677 fps | 98.1% |
| Lovex D073.5 | <<locked>> | 80% | 40,756 psi | 74% | 2759 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 32,764 psi | 59% | 2635 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 36,027 psi | 65% | 2608 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 30,560 psi | 55% | 2546 fps | 96.4% |
| Lovex S065 | <<locked>> | 96% | 41,263 psi | 75% | 2779 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 33,968 psi | 62% | 2615 fps | 97.5% |
| Norma 202 | <<locked>> | 80% | 33,939 psi | 62% | 2635 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 32,242 psi | 59% | 2625 fps | 95.6% |
| Norma URP | <<locked>> | 96% | 36,419 psi | 66% | 2766 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 32,024 psi | 58% | 2631 fps | 95% |
| Ramshot TAC | <<locked>> | 84% | 42,192 psi | 77% | 2782 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,578 psi | 65% | 2687 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,132 psi | 73% | 2723 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,150 psi | 46% | 1634 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,452 psi | 75% | 2769 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 44,135 psi | 80% | 2831 fps | 95.1% |
| ReloadSwiss RS 52 | 43.8 gr | 82% | 33,910 psi | 62% | 2726 fps | 95.4% |
| ReloadSwiss RS 60 | 43.4 gr | 80% | 26,411 psi | 48% | 2520 fps | 95.3% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 38,247 psi | 69% | 2835 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 37,362 psi | 68% | 2671 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 32,256 psi | 59% | 2562 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 29,457 psi | 53% | 2562 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 41,263 psi | 75% | 2779 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,764 psi | 59% | 2635 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 30,560 psi | 55% | 2546 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,990 psi | 80% | 2782 fps | 99.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,369 psi | 84% | 2871 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 33,475 psi | 61% | 2677 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,237 psi | 80% | 2782 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 39,552 psi | 72% | 2743 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 33,562 psi | 61% | 2628 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,042 psi | 65% | 2589 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,298 psi | 53% | 2451 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 39,450 psi | 72% | 2759 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 35,288 psi | 64% | 2592 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 34,389 psi | 62% | 2638 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 30,748 psi | 56% | 2575 fps | 95.6% |
| Somchem S365 | <<locked>> | 92% | 28,572 psi | 52% | 2598 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 41,060 psi | 75% | 2671 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,100 psi | 66% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,082 psi | 56% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 32,227 psi | 58% | 2569 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 82% | 27,427 psi | 50% | 2464 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 94% | 36,042 psi | 65% | 2710 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 36,753 psi | 67% | 2674 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 30,835 psi | 56% | 2556 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 37,608 psi | 68% | 2776 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 32,576 psi | 59% | 2592 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 35,288 psi | 64% | 2707 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,590 psi | 59% | 2628 fps | 96.3% |
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 89 powders for 7.5 x 55 Swiss loaded with the .308 | 150gr | Barnes MRX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,064 fps; across all powders the maximum-charge window runs from 1,785 fps to 3,064 fps. Accurate 4350 gives the best case fill at 100 %, and 89 of the 89 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 150.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for 7.5 x 55 Swiss with the .308 | 150gr | Barnes MRX BT 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.