Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 150gr | Norma ECO Strike bullet and 96 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, Alliant Reloder-17 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 56,043 psi | 88% | 2956 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,491 psi | 85% | 2976 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,869 psi | 89% | 3051 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,230 psi | 85% | 2976 fps | 96.6% |
| Accurate 4064 | <<locked>> | 90% | 54,723 psi | 86% | 3025 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,143 psi | 86% | 3114 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 55,434 psi | 87% | 3064 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 56,536 psi | 89% | 3064 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,418 psi | 85% | 3012 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,158 psi | 86% | 2986 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,347 psi | 87% | 3186 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,159 psi | 88% | 3077 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,478 psi | 89% | 3081 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,203 psi | 90% | 3110 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,478 psi | 89% | 3179 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,027 psi | 85% | 3156 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,205 psi | 63% | 2881 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,324 psi | 71% | 3058 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,448 psi | 87% | 3077 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 57,305 psi | 90% | 3100 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,421 psi | 90% | 3071 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,028 psi | 88% | 2995 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,522 psi | 90% | 3097 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,014 psi | 88% | 3146 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 54,650 psi | 86% | 3061 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 96% | 54,549 psi | 85% | 3110 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 94% | 54,998 psi | 86% | 3071 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 55,999 psi | 88% | 3074 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,605 psi | 82% | 3041 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,622 psi | 87% | 3107 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,376 psi | 87% | 3150 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,346 psi | 55% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,377 psi | 90% | 3077 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,956 psi | 88% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,912 psi | 88% | 3045 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,927 psi | 88% | 3025 fps | 97.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3094 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,724 psi | 87% | 3048 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 3104 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 55,027 psi | 86% | 3084 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 54,418 psi | 85% | 3012 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,114 psi | 86% | 3035 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,795 psi | 86% | 2986 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 55,782 psi | 87% | 3041 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,955 psi | 86% | 3038 fps | 98.6% |
| Lovex S070 | <<locked>> | 98% | 56,202 psi | 88% | 3077 fps | 98% |
| Norma 201 | <<locked>> | 88% | 57,348 psi | 90% | 3058 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,665 psi | 86% | 3009 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,376 psi | 88% | 3094 fps | 100% |
| Norma URP | <<locked>> | 98% | 54,317 psi | 85% | 3100 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 90% | 57,261 psi | 90% | 3123 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3153 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 54,650 psi | 86% | 3028 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,288 psi | 85% | 3045 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,042 psi | 86% | 3009 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,882 psi | 56% | 1936 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,290 psi | 90% | 3045 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,810 psi | 86% | 3038 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,012 psi | 85% | 3120 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,653 psi | 90% | 3215 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,056 psi | 86% | 3136 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,607 psi | 86% | 3166 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 54,607 psi | 86% | 2986 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,534 psi | 85% | 3005 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,159 psi | 90% | 3091 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,421 psi | 90% | 3071 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,955 psi | 86% | 3038 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,114 psi | 86% | 3035 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,782 psi | 87% | 3041 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,202 psi | 88% | 3077 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,477 psi | 87% | 3104 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,855 psi | 89% | 3064 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,464 psi | 90% | 3087 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,506 psi | 87% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,999 psi | 88% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,521 psi | 87% | 2992 fps | 97.6% |
| Somchem S321 | <<locked>> | 82% | 55,434 psi | 87% | 3041 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,940 psi | 86% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,521 psi | 89% | 3054 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 57,421 psi | 90% | 3091 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,214 psi | 82% | 3100 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 55,056 psi | 86% | 2904 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,869 psi | 88% | 2930 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,302 psi | 85% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,230 psi | 87% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,419 psi | 87% | 3015 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,826 psi | 89% | 3100 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 54,766 psi | 86% | 3012 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,072 psi | 89% | 3031 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,796 psi | 87% | 3104 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,425 psi | 70% | 2969 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 57,464 psi | 90% | 3077 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,839 psi | 86% | 3061 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,810 psi | 86% | 3114 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,911 psi | 56% | 2877 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,464 psi | 90% | 3094 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 49,327 psi | 77% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,640 psi | 65% | 2766 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,371 psi | 77% | 2936 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,633 psi | 79% | 2913 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 39,407 psi | 62% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,969 psi | 56% | 2740 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 45,498 psi | 71% | 2887 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 38,740 psi | 61% | 2723 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,659 psi | 75% | 2900 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 48,298 psi | 76% | 2884 fps | 100% |
| Alliant Power Pro 2000-MR | 60 gr | 80% | 41,655 psi | 65% | 2917 fps | 97.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,122 psi | 72% | 2900 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,334 psi | 60% | 2746 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,162 psi | 65% | 2815 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,056 psi | 56% | 2756 fps | 95.6% |
| Alliant Reloder-17 | 59.1 gr | 80% | 33,170 psi | 52% | 2703 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,111 psi | 49% | 2641 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,146 psi | 61% | 2913 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,020 psi | 71% | 2890 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 38,058 psi | 60% | 2749 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 47,297 psi | 74% | 2894 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,429 psi | 77% | 2890 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,717 psi | 73% | 2917 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,924 psi | 81% | 3077 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 38,928 psi | 61% | 2753 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 90% | 44,309 psi | 69% | 2920 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 92% | 51,590 psi | 81% | 3012 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 45,977 psi | 72% | 2900 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,879 psi | 48% | 2582 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,322 psi | 66% | 2871 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 47,587 psi | 75% | 3009 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,324 psi | 41% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,309 psi | 69% | 2851 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 45,759 psi | 72% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,683 psi | 64% | 2762 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,035 psi | 72% | 2844 fps | 95.5% |
| IMR 4350 | <<locked>> | 94% | 47,659 psi | 75% | 2920 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,151 psi | 72% | 2874 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 34,838 psi | 55% | 2694 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 42,192 psi | 66% | 2848 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 47,659 psi | 75% | 2900 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 44,918 psi | 70% | 2867 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,498 psi | 71% | 2822 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 40,466 psi | 63% | 2766 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 40,277 psi | 63% | 2756 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 43,410 psi | 68% | 2841 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 44,469 psi | 70% | 2838 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 44,918 psi | 70% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,509 psi | 63% | 2802 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 36,230 psi | 57% | 2743 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 40,350 psi | 63% | 2815 fps | 98% |
| Ramshot Hunter | <<locked>> | 90% | 40,654 psi | 64% | 2848 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 47,877 psi | 75% | 2907 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,355 psi | 74% | 2927 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,474 psi | 81% | 2949 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,687 psi | 42% | 1736 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,490 psi | 84% | 2986 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,105 psi | 66% | 2799 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,772 psi | 69% | 2930 fps | 98.3% |
| ReloadSwiss RS 60 | 59.1 gr | 80% | 35,346 psi | 55% | 2779 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 35,882 psi | 56% | 2756 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,435 psi | 60% | 2828 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 48,254 psi | 76% | 2881 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,250 psi | 66% | 2785 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 35,592 psi | 56% | 2684 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 47,297 psi | 74% | 2894 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,277 psi | 63% | 2756 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,918 psi | 70% | 2867 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,466 psi | 63% | 2766 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 90% | 43,410 psi | 68% | 2841 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,912 psi | 58% | 2743 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,934 psi | 72% | 2874 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,222 psi | 69% | 2854 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,934 psi | 72% | 2792 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,232 psi | 60% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,339 psi | 71% | 2815 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 51,793 psi | 81% | 2982 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,455 psi | 71% | 2789 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,788 psi | 72% | 2874 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 36,477 psi | 57% | 2694 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 28,195 psi | 44% | 2559 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 51,851 psi | 81% | 2858 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,354 psi | 73% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,974 psi | 66% | 2769 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,554 psi | 67% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,708 psi | 54% | 2628 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 84% | 35,505 psi | 56% | 2687 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 48,008 psi | 75% | 2897 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 41,104 psi | 64% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 37,347 psi | 59% | 2746 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 33,620 psi | 53% | 2723 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,777 psi | 48% | 2543 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 47,848 psi | 75% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 44,527 psi | 70% | 2923 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 31,372 psi | 49% | 2726 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,729 psi | 69% | 2858 fps | 99.2% |
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 114 powders for .308 Norma Mag. loaded with the .308 | 150gr | Norma ECO Strike. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,215 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,215 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .308 Norma Mag. with the .308 | 150gr | Norma ECO Strike they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate High Country, ADI AR 2209, Alliant Reloder-19 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.