Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 150gr | Ferrobull Entox Sport 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.
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 2015 | <<locked>> | 86% | 49,139 psi | 89% | 2877 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,224 psi | 86% | 2897 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 48,863 psi | 89% | 2933 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,486 psi | 88% | 2956 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 48,892 psi | 89% | 2979 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,773 psi | 81% | 2986 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 88% | 48,153 psi | 87% | 2969 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 94% | 49,269 psi | 89% | 2966 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 47,630 psi | 86% | 2923 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 47,036 psi | 85% | 2907 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,602 psi | 88% | 3028 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 47,398 psi | 86% | 3074 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,312 psi | 88% | 2986 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,182 psi | 89% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 48,979 psi | 89% | 3005 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,918 psi | 82% | 2999 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 48,631 psi | 88% | 3100 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 47,587 psi | 86% | 2976 fps | 98.7% |
| Bofors RP3 | <<locked>> | 94% | 48,138 psi | 87% | 2995 fps | 99.9% |
| Bofors RP7 | <<locked>> | 98% | 49,661 psi | 90% | 2956 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 46,876 psi | 85% | 2864 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 49,298 psi | 89% | 3005 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 47,413 psi | 86% | 3041 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 82% | 48,153 psi | 87% | 2927 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,863 psi | 89% | 2949 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 46,470 psi | 84% | 2949 fps | 98% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 48,631 psi | 88% | 3041 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 88% | 48,530 psi | 88% | 2979 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,118 psi | 75% | 2874 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 47,210 psi | 86% | 3012 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,316 psi | 62% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 47,065 psi | 85% | 2933 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 47,718 psi | 87% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 48,863 psi | 89% | 2949 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 90% | 49,429 psi | 90% | 2920 fps | 96.2% |
| IMR 4198 | <<locked>> | 82% | 49,719 psi | 90% | 2844 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,588 psi | 88% | 2940 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,830 psi | 78% | 2927 fps | 98% |
| IMR 4895 | <<locked>> | 90% | 47,065 psi | 85% | 2986 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 86% | 47,630 psi | 86% | 2923 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 46,934 psi | 85% | 2900 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 46,731 psi | 85% | 2943 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,791 psi | 89% | 2900 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 48,153 psi | 87% | 2946 fps | 99.9% |
| Lovex S065 | <<locked>> | 98% | 47,253 psi | 86% | 2930 fps | 97.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 47,674 psi | 87% | 2959 fps | 96.3% |
| Norma 201 | <<locked>> | 88% | 47,050 psi | 85% | 2917 fps | 99.8% |
| Norma 202 | <<locked>> | 88% | 47,239 psi | 86% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,153 psi | 87% | 2992 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 45,063 psi | 82% | 2986 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 92% | 48,573 psi | 88% | 3018 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,599 psi | 81% | 2972 fps | 96.3% |
| Ramshot TAC | <<locked>> | 86% | 47,863 psi | 87% | 2930 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 47,065 psi | 85% | 2956 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,631 psi | 88% | 2920 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,650 psi | 63% | 1870 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 47,253 psi | 86% | 2910 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,456 psi | 86% | 2933 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 48,660 psi | 88% | 3074 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 48,428 psi | 88% | 3107 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,686 psi | 81% | 3009 fps | 98% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,180 psi | 84% | 3035 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 86% | 48,095 psi | 87% | 2904 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,471 psi | 86% | 2913 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 48,008 psi | 87% | 2986 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 98% | 49,661 psi | 90% | 2956 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,253 psi | 86% | 2930 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 46,731 psi | 85% | 2943 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,153 psi | 87% | 2946 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 47,674 psi | 87% | 2959 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 46,688 psi | 85% | 2995 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 49,095 psi | 89% | 2959 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 46,688 psi | 85% | 2936 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 49,255 psi | 89% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 48,776 psi | 89% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,369 psi | 86% | 2877 fps | 95.9% |
| Somchem S321 | <<locked>> | 84% | 48,472 psi | 88% | 2959 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 48,341 psi | 88% | 2861 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 48,588 psi | 88% | 2953 fps | 99.4% |
| Somchem S355 | <<locked>> | 96% | 48,892 psi | 89% | 2989 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,001 psi | 73% | 2930 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 84% | 49,153 psi | 89% | 2831 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,298 psi | 89% | 2851 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 49,530 psi | 90% | 2930 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 47,834 psi | 87% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 47,166 psi | 86% | 2917 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,630 psi | 86% | 2982 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 86% | 47,790 psi | 87% | 2920 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 49,066 psi | 89% | 2946 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,572 psi | 85% | 2989 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 32,996 psi | 60% | 2782 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,008 psi | 89% | 2969 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 46,847 psi | 85% | 2966 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,921 psi | 89% | 3048 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 49,240 psi | 89% | 2999 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% | 40,495 psi | 73% | 2736 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,932 psi | 80% | 2841 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,445 psi | 59% | 2635 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,247 psi | 71% | 2792 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 30,705 psi | 56% | 2621 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 33,344 psi | 61% | 2746 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 37,202 psi | 68% | 2749 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 33,852 psi | 61% | 2648 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,291 psi | 71% | 2766 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 38,247 psi | 69% | 2762 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,455 psi | 82% | 2972 fps | 99.5% |
| Alliant Power Pro 2000-MR | 47.1 gr | 80% | 33,591 psi | 61% | 2756 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,574 psi | 55% | 2612 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,035 psi | 84% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,141 psi | 60% | 2674 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,070 psi | 64% | 2769 fps | 95.5% |
| Alliant Reloder-17 | 48.7 gr | 84% | 30,342 psi | 55% | 2674 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,260 psi | 66% | 2746 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 29,718 psi | 54% | 2605 fps | 96.5% |
| Bofors RP7 | <<locked>> | 96% | 46,572 psi | 85% | 2900 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,336 psi | 75% | 2759 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,289 psi | 68% | 2779 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,118 psi | 75% | 2917 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 45,049 psi | 82% | 2877 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,571 psi | 83% | 2897 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 35,447 psi | 64% | 2720 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 98% | 45,600 psi | 83% | 2986 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 37,463 psi | 68% | 2762 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 29,791 psi | 54% | 2598 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,533 psi | 61% | 2723 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,425 psi | 46% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,289 psi | 66% | 2717 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 36,303 psi | 66% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,170 psi | 60% | 2625 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,427 psi | 84% | 2864 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 46,804 psi | 85% | 2802 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 45,687 psi | 83% | 2887 fps | 95.3% |
| IMR 4831 | <<locked>> | 92% | 32,779 psi | 59% | 2703 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 33,881 psi | 61% | 2707 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 39,291 psi | 71% | 2766 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 43,729 psi | 79% | 2844 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 35,462 psi | 64% | 2726 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 38,101 psi | 69% | 2690 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 32,706 psi | 59% | 2631 fps | 97.7% |
| Lovex S065 | <<locked>> | 92% | 39,015 psi | 71% | 2769 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 44,672 psi | 81% | 2904 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 36,230 psi | 66% | 2700 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 36,506 psi | 66% | 2720 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 32,518 psi | 59% | 2661 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 34,679 psi | 63% | 2759 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 32,126 psi | 58% | 2667 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 98% | 41,611 psi | 76% | 2910 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 39,334 psi | 71% | 2759 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,189 psi | 69% | 2779 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,714 psi | 78% | 2815 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,599 psi | 46% | 1673 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,295 psi | 80% | 2858 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 41,582 psi | 75% | 2818 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,243 psi | 62% | 2772 fps | 96.2% |
| ReloadSwiss RS 60 | 46.4 gr | 80% | 28,340 psi | 51% | 2625 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,230 psi | 66% | 2825 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 40,161 psi | 73% | 2904 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 39,885 psi | 72% | 2753 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 34,476 psi | 63% | 2651 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 27,847 psi | 51% | 2543 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 96% | 46,572 psi | 85% | 2900 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 39,015 psi | 71% | 2769 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,462 psi | 64% | 2726 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 32,706 psi | 59% | 2631 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 98% | 44,672 psi | 81% | 2904 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,430 psi | 57% | 2657 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 36,927 psi | 67% | 2720 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,955 psi | 65% | 2717 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,174 psi | 69% | 2667 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,227 psi | 57% | 2526 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 44,179 psi | 80% | 2822 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 42,177 psi | 77% | 2848 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 37,507 psi | 68% | 2667 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 36,869 psi | 67% | 2726 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 29,037 psi | 53% | 2556 fps | 95.4% |
| Somchem S365 | <<locked>> | 88% | 27,108 psi | 49% | 2589 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 43,424 psi | 79% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,319 psi | 70% | 2667 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,417 psi | 61% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,418 psi | 62% | 2651 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 27,528 psi | 50% | 2493 fps | 96.4% |
| Vihtavuori N160 | <<locked>> | 90% | 34,113 psi | 62% | 2703 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 39,160 psi | 71% | 2759 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 33,170 psi | 60% | 2641 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 35,476 psi | 64% | 2762 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 98% | 30,908 psi | 56% | 2723 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,472 psi | 55% | 2572 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 38,130 psi | 69% | 2802 fps | 99.4% |
| Winchester 760 | <<locked>> | 98% | 45,600 psi | 83% | 2986 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,925 psi | 63% | 2717 fps | 97.6% |
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 105 powders for 7.5 x 55 Swiss loaded with the .308 | 150gr | Ferrobull Entox Sport. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,107 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 51–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 | 150gr | Ferrobull Entox Sport they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 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.