Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 155gr | Norma Kalahari bullet and 95 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 60 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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 49,443 psi | 90% | 2805 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,805 psi | 87% | 2828 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,748 psi | 90% | 2867 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,994 psi | 89% | 2890 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 49,763 psi | 90% | 2913 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,918 psi | 82% | 2913 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 88% | 48,631 psi | 88% | 2900 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 49,545 psi | 90% | 2894 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 47,921 psi | 87% | 2854 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 47,166 psi | 86% | 2835 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 49,023 psi | 89% | 2956 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 47,659 psi | 86% | 3002 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,762 psi | 88% | 2917 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,647 psi | 90% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 49,414 psi | 90% | 2936 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,353 psi | 82% | 2930 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 48,747 psi | 88% | 3025 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 31,908 psi | 58% | 2648 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 47,834 psi | 87% | 2907 fps | 98.8% |
| Bofors RP3 | <<locked>> | 94% | 48,559 psi | 88% | 2927 fps | 99.9% |
| Bofors RP7 | <<locked>> | 98% | 49,763 psi | 90% | 2881 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 47,311 psi | 86% | 2795 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 49,574 psi | 90% | 2933 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 47,761 psi | 87% | 2969 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 82% | 48,501 psi | 88% | 2854 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 49,298 psi | 89% | 2881 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 47,094 psi | 85% | 2884 fps | 98.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 48,776 psi | 89% | 2969 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 88% | 49,008 psi | 89% | 2910 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,307 psi | 75% | 2802 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 47,413 psi | 86% | 2940 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,476 psi | 63% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 47,137 psi | 86% | 2861 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 47,964 psi | 87% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 49,081 psi | 89% | 2877 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 90% | 49,734 psi | 90% | 2851 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,805 psi | 89% | 2871 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,149 psi | 78% | 2861 fps | 98% |
| IMR 4895 | <<locked>> | 90% | 47,398 psi | 86% | 2917 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 86% | 47,921 psi | 87% | 2854 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 47,674 psi | 87% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 47,210 psi | 86% | 2874 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 49,023 psi | 89% | 2828 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 48,559 psi | 88% | 2877 fps | 99.9% |
| Lovex S065 | <<locked>> | 98% | 47,718 psi | 87% | 2864 fps | 97.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,051 psi | 87% | 2890 fps | 96.3% |
| Norma 201 | <<locked>> | 88% | 47,587 psi | 86% | 2848 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 47,659 psi | 86% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,588 psi | 88% | 2923 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 45,339 psi | 82% | 2913 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 92% | 48,660 psi | 88% | 2946 fps | 99.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,831 psi | 81% | 2904 fps | 96.3% |
| Ramshot TAC | <<locked>> | 86% | 48,341 psi | 88% | 2864 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 47,166 psi | 86% | 2881 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 84% | 49,182 psi | 89% | 2854 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,911 psi | 63% | 1818 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 47,732 psi | 87% | 2841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,834 psi | 87% | 2864 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 48,733 psi | 88% | 2995 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 48,747 psi | 88% | 3035 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,991 psi | 82% | 2940 fps | 98% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,282 psi | 84% | 2959 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 86% | 48,921 psi | 89% | 2838 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,819 psi | 87% | 2841 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 48,428 psi | 88% | 2917 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 98% | 49,763 psi | 90% | 2881 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,718 psi | 87% | 2864 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 47,210 psi | 86% | 2874 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,559 psi | 88% | 2877 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,051 psi | 87% | 2890 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 47,079 psi | 85% | 2927 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 49,458 psi | 90% | 2887 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 47,007 psi | 85% | 2867 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 49,690 psi | 90% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 49,197 psi | 89% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,587 psi | 86% | 2808 fps | 95.9% |
| Somchem S321 | <<locked>> | 84% | 48,849 psi | 89% | 2890 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 48,834 psi | 89% | 2795 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 48,863 psi | 89% | 2881 fps | 99.4% |
| Somchem S355 | <<locked>> | 96% | 49,211 psi | 89% | 2917 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,408 psi | 73% | 2864 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 84% | 49,690 psi | 90% | 2766 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,734 psi | 90% | 2782 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 46,992 psi | 85% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 48,051 psi | 87% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 47,514 psi | 86% | 2848 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,601 psi | 86% | 2907 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 86% | 48,182 psi | 87% | 2851 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 49,661 psi | 90% | 2877 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,760 psi | 85% | 2917 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 33,489 psi | 61% | 2723 fps | 96% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,095 psi | 89% | 2897 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 47,355 psi | 86% | 2900 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 49,095 psi | 89% | 2976 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 49,443 psi | 90% | 2927 fps | 99.8% |
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% | 41,133 psi | 75% | 2671 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,730 psi | 81% | 2779 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,547 psi | 61% | 2585 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,958 psi | 73% | 2733 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 31,734 psi | 58% | 2572 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 34,040 psi | 62% | 2690 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 37,869 psi | 69% | 2690 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 32,198 psi | 58% | 2536 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,871 psi | 72% | 2703 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 38,711 psi | 70% | 2700 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,006 psi | 83% | 2904 fps | 99.5% |
| Alliant Power Pro 2000-MR | 45.1 gr | 80% | 33,968 psi | 62% | 2690 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,227 psi | 57% | 2559 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,717 psi | 85% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,808 psi | 61% | 2618 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,447 psi | 64% | 2707 fps | 95.6% |
| Alliant Reloder-17 | 46.6 gr | 84% | 30,777 psi | 56% | 2618 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,124 psi | 55% | 2595 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,666 psi | 67% | 2684 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 30,414 psi | 55% | 2552 fps | 96.7% |
| Bofors RP7 | <<locked>> | 96% | 46,905 psi | 85% | 2831 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,829 psi | 76% | 2697 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,797 psi | 69% | 2717 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,524 psi | 75% | 2851 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 45,281 psi | 82% | 2805 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,122 psi | 84% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 35,984 psi | 65% | 2661 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 98% | 45,672 psi | 83% | 2913 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 38,101 psi | 69% | 2703 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 30,385 psi | 55% | 2546 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,895 psi | 62% | 2661 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,730 psi | 47% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,622 psi | 66% | 2651 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 36,782 psi | 67% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,721 psi | 61% | 2566 fps | 96% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,659 psi | 85% | 2795 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 46,050 psi | 84% | 2818 fps | 95.3% |
| IMR 4831 | <<locked>> | 92% | 33,388 psi | 61% | 2651 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,548 psi | 63% | 2651 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 39,871 psi | 72% | 2703 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 44,338 psi | 80% | 2782 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 35,926 psi | 65% | 2664 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 38,551 psi | 70% | 2628 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 33,417 psi | 61% | 2575 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 39,537 psi | 72% | 2707 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 44,976 psi | 82% | 2835 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 36,970 psi | 67% | 2641 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 37,115 psi | 67% | 2661 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 33,185 psi | 60% | 2608 fps | 96.5% |
| Norma URP | <<locked>> | 92% | 35,143 psi | 64% | 2700 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 32,561 psi | 59% | 2608 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 98% | 42,032 psi | 76% | 2848 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 39,755 psi | 72% | 2697 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,812 psi | 70% | 2723 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,076 psi | 78% | 2746 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,759 psi | 47% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,686 psi | 81% | 2789 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 42,003 psi | 76% | 2756 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,563 psi | 63% | 2707 fps | 96.3% |
| ReloadSwiss RS 60 | 44.4 gr | 80% | 28,834 psi | 52% | 2569 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,666 psi | 67% | 2762 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 40,393 psi | 73% | 2835 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 40,669 psi | 74% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,215 psi | 64% | 2592 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 28,631 psi | 52% | 2497 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 96% | 46,905 psi | 85% | 2831 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 39,537 psi | 72% | 2707 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,926 psi | 65% | 2664 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 33,417 psi | 61% | 2575 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 98% | 44,976 psi | 82% | 2835 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,879 psi | 58% | 2598 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,507 psi | 68% | 2661 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,245 psi | 66% | 2654 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,624 psi | 70% | 2602 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,647 psi | 57% | 2467 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 44,280 psi | 80% | 2753 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 42,641 psi | 77% | 2782 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 38,130 psi | 69% | 2608 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,347 psi | 68% | 2667 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 29,733 psi | 54% | 2507 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 26,020 psi | 47% | 2480 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 43,787 psi | 79% | 2674 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,696 psi | 70% | 2602 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,939 psi | 62% | 2585 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,027 psi | 64% | 2592 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 28,210 psi | 51% | 2448 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 90% | 34,519 psi | 63% | 2641 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 39,595 psi | 72% | 2694 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 33,707 psi | 61% | 2582 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 92% | 36,100 psi | 66% | 2707 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 31,560 psi | 57% | 2674 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,167 psi | 53% | 2467 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 38,421 psi | 70% | 2736 fps | 99.5% |
| Winchester 760 | <<locked>> | 98% | 45,905 psi | 83% | 2917 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,534 psi | 64% | 2657 fps | 97.8% |
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 95 powders for 7.5 x 55 Swiss loaded with the .308 | 155gr | Norma Kalahari. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,035 fps. Accurate 4350 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:12.5 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7.5 x 55 Swiss with the .308 | 155gr | Norma Kalahari 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.