Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 145gr | SUS-TAC HPT 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, 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 56,217 psi | 88% | 3002 fps | 100% |
| Accurate 2495 | <<locked>> | 84% | 54,302 psi | 85% | 3038 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,477 psi | 87% | 3081 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,463 psi | 87% | 3022 fps | 96.5% |
| Accurate 4064 | <<locked>> | 90% | 55,376 psi | 87% | 3077 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,593 psi | 87% | 3163 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 55,419 psi | 87% | 3107 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 56,637 psi | 89% | 3107 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,404 psi | 85% | 3054 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,448 psi | 87% | 3035 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,274 psi | 87% | 3228 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,623 psi | 89% | 3130 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,348 psi | 90% | 3156 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 3219 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,244 psi | 85% | 3199 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,437 psi | 63% | 2923 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,629 psi | 72% | 3100 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,506 psi | 87% | 3120 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 57,595 psi | 90% | 3146 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,551 psi | 90% | 3114 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,999 psi | 88% | 3038 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,696 psi | 90% | 3140 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,043 psi | 88% | 3189 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 54,346 psi | 85% | 3041 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,897 psi | 86% | 3104 fps | 99% |
| Hodgdon H414 | <<locked>> | 94% | 56,347 psi | 88% | 3179 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 98% | 56,492 psi | 89% | 3136 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 86% | 55,970 psi | 88% | 3117 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,837 psi | 83% | 3087 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,883 psi | 88% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,245 psi | 87% | 3186 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 56% | 1926 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,188 psi | 88% | 3104 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,592 psi | 86% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,288 psi | 87% | 3077 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,592 psi | 86% | 3041 fps | 97.1% |
| IMR 4350 | <<locked>> | 98% | 54,375 psi | 85% | 3081 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,782 psi | 87% | 3087 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,734 psi | 78% | 3045 fps | 98.7% |
| IMR 4895 | <<locked>> | 88% | 55,274 psi | 87% | 3130 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 54,404 psi | 85% | 3054 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,477 psi | 87% | 3081 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,940 psi | 86% | 3031 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 55,840 psi | 88% | 3084 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,419 psi | 87% | 3084 fps | 98.5% |
| Lovex S070 | <<locked>> | 98% | 56,318 psi | 88% | 3117 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 57,740 psi | 90% | 3104 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,926 psi | 86% | 3054 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,550 psi | 89% | 3140 fps | 99.9% |
| Norma URP | <<locked>> | 98% | 54,346 psi | 85% | 3143 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 57,246 psi | 90% | 3163 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,913 psi | 89% | 3199 fps | 98.4% |
| Ramshot TAC | <<locked>> | 84% | 54,795 psi | 86% | 3068 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,433 psi | 85% | 3091 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,230 psi | 87% | 3051 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,926 psi | 56% | 1969 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,217 psi | 90% | 3087 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,969 psi | 86% | 3077 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,128 psi | 85% | 3163 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,896 psi | 84% | 3205 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,230 psi | 87% | 3182 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,752 psi | 86% | 3209 fps | 99% |
| Rottweil R 901 | <<locked>> | 84% | 55,317 psi | 87% | 3038 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,752 psi | 86% | 3048 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,450 psi | 90% | 3140 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,551 psi | 90% | 3114 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,419 psi | 87% | 3084 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,477 psi | 87% | 3081 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,840 psi | 88% | 3084 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,318 psi | 88% | 3117 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,492 psi | 87% | 3146 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 57,043 psi | 89% | 3107 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,595 psi | 90% | 3130 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,579 psi | 87% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,173 psi | 88% | 2989 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,695 psi | 87% | 3031 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 55,666 psi | 87% | 3087 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,085 psi | 86% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,623 psi | 89% | 3097 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 57,624 psi | 90% | 3136 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,431 psi | 82% | 3146 fps | 100% |
| Unknown powder | <<locked>> | 96% | 55,303 psi | 87% | 3153 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 82% | 55,419 psi | 87% | 2953 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,840 psi | 88% | 2972 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,665 psi | 86% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,434 psi | 87% | 3031 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,579 psi | 87% | 3058 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,058 psi | 89% | 3143 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 54,984 psi | 86% | 3058 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,246 psi | 90% | 3077 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,086 psi | 88% | 3146 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,628 psi | 70% | 3012 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 57,305 psi | 90% | 3117 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,477 psi | 87% | 3114 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,347 psi | 88% | 3179 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,405 psi | 57% | 2920 fps | 98.2% |
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% | 49,661 psi | 78% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,703 psi | 75% | 2936 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,283 psi | 76% | 2969 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,112 psi | 82% | 2966 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 40,277 psi | 63% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 36,347 psi | 57% | 2782 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 45,919 psi | 72% | 2933 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 38,972 psi | 61% | 2766 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,008 psi | 75% | 2946 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 48,385 psi | 76% | 2930 fps | 100% |
| Alliant Power Pro 2000-MR | 60.4 gr | 80% | 41,930 psi | 66% | 2959 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,798 psi | 61% | 2792 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,611 psi | 65% | 2861 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,405 psi | 57% | 2799 fps | 95.3% |
| Alliant Reloder-17 | 59.5 gr | 80% | 33,576 psi | 53% | 2749 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 33,605 psi | 53% | 2746 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,421 psi | 62% | 2953 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,223 psi | 71% | 2933 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 38,464 psi | 60% | 2795 fps | 98.2% |
| Bofors RP7 | <<locked>> | 92% | 50,720 psi | 79% | 2995 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,530 psi | 78% | 2933 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,094 psi | 74% | 2966 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,040 psi | 82% | 3123 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 50,894 psi | 80% | 2986 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,247 psi | 62% | 2795 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 88% | 45,745 psi | 72% | 2986 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 96% | 53,272 psi | 83% | 3081 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 46,354 psi | 73% | 2946 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 31,401 psi | 49% | 2628 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,885 psi | 63% | 2854 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 92% | 47,863 psi | 75% | 3048 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 41% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,104 psi | 64% | 2822 fps | 98.4% |
| IMR 3031 | <<locked>> | 80% | 42,293 psi | 66% | 2871 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,334 psi | 60% | 2746 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 45,745 psi | 72% | 2874 fps | 95% |
| IMR 4350 | <<locked>> | 94% | 48,008 psi | 75% | 2966 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,369 psi | 73% | 2913 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 36,143 psi | 57% | 2759 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 42,627 psi | 67% | 2894 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 48,008 psi | 75% | 2946 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 45,223 psi | 71% | 2910 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,832 psi | 72% | 2867 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 41,031 psi | 64% | 2815 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 40,596 psi | 64% | 2799 fps | 95.1% |
| Lovex S070 | <<locked>> | 92% | 46,644 psi | 73% | 2946 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 45,049 psi | 71% | 2884 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 45,368 psi | 71% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,973 psi | 64% | 2848 fps | 98% |
| Norma URP | <<locked>> | 86% | 36,651 psi | 57% | 2785 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 40,654 psi | 64% | 2858 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 43,569 psi | 68% | 2949 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 47,935 psi | 75% | 2946 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,645 psi | 75% | 2969 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,735 psi | 81% | 2995 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,847 psi | 42% | 1765 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,722 psi | 84% | 3031 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,237 psi | 71% | 2900 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,859 psi | 69% | 2972 fps | 98.1% |
| ReloadSwiss RS 60 | 59.5 gr | 80% | 35,737 psi | 56% | 2825 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 38,725 psi | 61% | 2861 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,408 psi | 65% | 2936 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 49,037 psi | 77% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,859 psi | 67% | 2835 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 36,260 psi | 57% | 2733 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 50,720 psi | 79% | 2995 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,596 psi | 64% | 2799 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,223 psi | 71% | 2910 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,031 psi | 64% | 2815 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 46,644 psi | 73% | 2946 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,115 psi | 58% | 2782 fps | 96.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,296 psi | 73% | 2920 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,353 psi | 70% | 2897 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,151 psi | 72% | 2838 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,522 psi | 60% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,672 psi | 72% | 2854 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 52,069 psi | 82% | 3028 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,948 psi | 72% | 2838 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,079 psi | 72% | 2917 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 37,072 psi | 58% | 2743 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 28,761 psi | 45% | 2608 fps | 95.5% |
| Unknown powder | <<locked>> | 86% | 39,682 psi | 62% | 2848 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 52,040 psi | 82% | 2904 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,514 psi | 73% | 2831 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,308 psi | 66% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,946 psi | 67% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,244 psi | 55% | 2674 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 38,159 psi | 60% | 2785 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 48,124 psi | 75% | 2940 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 41,365 psi | 65% | 2808 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 37,739 psi | 59% | 2789 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 92% | 34,084 psi | 53% | 2769 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,227 psi | 49% | 2585 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 51,822 psi | 81% | 3054 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 45,745 psi | 72% | 2986 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 31,952 psi | 50% | 2772 fps | 95.7% |
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 115 powders for .308 Norma Mag. loaded with the .308 | 145gr | SUS-TAC HPT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,228 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,228 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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 .308 Norma Mag. with the .308 | 145gr | SUS-TAC HPT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.