Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 156gr | Reichenbeg HDB Ogival bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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>> | 82% | 54,781 psi | 86% | 2887 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,159 psi | 90% | 2956 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,405 psi | 87% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,318 psi | 88% | 2969 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,541 psi | 70% | 2854 fps | 96.9% |
| Accurate 4064 | <<locked>> | 90% | 57,319 psi | 90% | 3012 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,288 psi | 85% | 3051 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 57,725 psi | 90% | 3051 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,201 psi | 87% | 2995 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,391 psi | 88% | 2995 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,085 psi | 85% | 2917 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,201 psi | 85% | 3120 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,199 psi | 82% | 3022 fps | 95.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,199 psi | 82% | 3022 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,579 psi | 87% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,956 psi | 88% | 3041 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,521 psi | 87% | 3114 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,855 psi | 89% | 3150 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,395 psi | 66% | 2887 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,109 psi | 75% | 3071 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,740 psi | 90% | 3068 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 56,130 psi | 88% | 3031 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,956 psi | 88% | 3005 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,447 psi | 85% | 2923 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,072 psi | 88% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,029 psi | 89% | 3051 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 96% | 57,290 psi | 90% | 3110 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 94% | 57,551 psi | 90% | 3068 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 84% | 54,578 psi | 86% | 3002 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,434 psi | 87% | 3035 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,491 psi | 85% | 3038 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,795 psi | 84% | 3081 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,549 psi | 56% | 1864 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,043 psi | 88% | 3009 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,853 psi | 86% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,621 psi | 86% | 2979 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,520 psi | 85% | 2959 fps | 97.9% |
| IMR 4350 | <<locked>> | 98% | 56,623 psi | 89% | 3035 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,389 psi | 85% | 2982 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 54,969 psi | 86% | 3045 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 57,421 psi | 90% | 3071 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,391 psi | 88% | 2995 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,638 psi | 90% | 3018 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,855 psi | 89% | 2972 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,578 psi | 86% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,421 psi | 90% | 3031 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 54,897 psi | 86% | 3012 fps | 98.2% |
| Norma 201 | <<locked>> | 86% | 56,043 psi | 88% | 2986 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,739 psi | 89% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,201 psi | 87% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,711 psi | 90% | 3091 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 47,558 psi | 75% | 3018 fps | 96.5% |
| Norma URP | <<locked>> | 98% | 57,116 psi | 90% | 3097 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 56,115 psi | 88% | 3058 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,883 psi | 88% | 3094 fps | 98.9% |
| Ramshot TAC | <<locked>> | 84% | 56,739 psi | 89% | 3015 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,536 psi | 89% | 3035 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,159 psi | 90% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,114 psi | 57% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,290 psi | 90% | 3031 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,927 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,449 psi | 88% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,259 psi | 85% | 3074 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,464 psi | 90% | 3169 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 56,666 psi | 89% | 2966 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,579 psi | 89% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,985 psi | 88% | 3025 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,956 psi | 88% | 3005 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,421 psi | 90% | 3031 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,638 psi | 90% | 3018 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,578 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,897 psi | 86% | 3012 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,360 psi | 85% | 3035 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,317 psi | 87% | 2995 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,217 psi | 88% | 3018 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,493 psi | 90% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,549 psi | 85% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,667 psi | 90% | 2982 fps | 98.4% |
| Somchem S321 | <<locked>> | 82% | 57,725 psi | 90% | 3025 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,869 psi | 89% | 2917 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,056 psi | 86% | 2986 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,188 psi | 88% | 3022 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,288 psi | 87% | 3094 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 2969 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 82% | 57,000 psi | 89% | 2881 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 54,549 psi | 85% | 2861 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,797 psi | 89% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,537 psi | 90% | 2966 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,143 psi | 85% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,840 psi | 88% | 3038 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 57,029 psi | 89% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,564 psi | 87% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,882 psi | 86% | 3041 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,920 psi | 74% | 2966 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,028 psi | 88% | 3012 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,305 psi | 90% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,290 psi | 90% | 3110 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,985 psi | 60% | 2900 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,159 psi | 88% | 3025 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% | 51,314 psi | 80% | 2838 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,656 psi | 68% | 2753 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,692 psi | 81% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,006 psi | 72% | 2789 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 38,754 psi | 61% | 2736 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 41,336 psi | 65% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,302 psi | 55% | 2677 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 47,543 psi | 75% | 2881 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 40,335 psi | 63% | 2720 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,719 psi | 78% | 2887 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,546 psi | 79% | 2867 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,671 psi | 68% | 2920 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,936 psi | 77% | 2959 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,936 psi | 77% | 2959 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,074 psi | 63% | 2740 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,149 psi | 68% | 2812 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,185 psi | 52% | 2638 fps | 95% |
| Alliant Reloder-17 | 59.9 gr | 80% | 34,853 psi | 55% | 2710 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,632 psi | 48% | 2592 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,853 psi | 56% | 2789 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,021 psi | 74% | 2884 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 39,900 psi | 63% | 2746 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 46,238 psi | 72% | 2831 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,213 psi | 80% | 2871 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,907 psi | 77% | 2910 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,654 psi | 64% | 2749 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 43,555 psi | 68% | 2861 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 47,398 psi | 74% | 2890 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 48,051 psi | 75% | 2890 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,414 psi | 48% | 2530 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,237 psi | 69% | 2861 fps | 99.7% |
| Hodgdon Superformance | 71.2 gr | 90% | 46,557 psi | 73% | 2946 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,426 psi | 41% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,079 psi | 72% | 2841 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 47,906 psi | 75% | 2877 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,380 psi | 66% | 2756 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,788 psi | 70% | 2779 fps | 95.8% |
| IMR 4350 | <<locked>> | 90% | 44,005 psi | 69% | 2808 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,409 psi | 66% | 2756 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 34,214 psi | 54% | 2635 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 44,251 psi | 69% | 2844 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 49,719 psi | 78% | 2887 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,934 psi | 74% | 2854 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,152 psi | 74% | 2808 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 42,250 psi | 66% | 2756 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 39,320 psi | 62% | 2694 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 42,583 psi | 67% | 2782 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 46,267 psi | 73% | 2825 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,789 psi | 73% | 2831 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,482 psi | 67% | 2799 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 50,082 psi | 78% | 2963 fps | 95.1% |
| Norma MRP | <<locked>> | 98% | 44,541 psi | 70% | 2956 fps | 95.6% |
| Norma URP | <<locked>> | 84% | 35,694 psi | 56% | 2684 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 42,409 psi | 66% | 2815 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 39,755 psi | 62% | 2785 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 49,574 psi | 78% | 2897 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,472 psi | 78% | 2917 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,534 psi | 84% | 2940 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,832 psi | 42% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,089 psi | 64% | 2733 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,876 psi | 72% | 2923 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,130 psi | 58% | 2782 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,230 psi | 55% | 2697 fps | 95.4% |
| ReloadSwiss RS 70 | 65.4 gr | 86% | 37,710 psi | 59% | 2772 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 50,183 psi | 79% | 2864 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,019 psi | 69% | 2772 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,376 psi | 59% | 2684 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 46,238 psi | 72% | 2831 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,320 psi | 62% | 2694 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,934 psi | 74% | 2854 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,250 psi | 66% | 2756 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 42,583 psi | 67% | 2782 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,624 psi | 61% | 2740 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,979 psi | 75% | 2867 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,977 psi | 72% | 2844 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,703 psi | 75% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,856 psi | 62% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,266 psi | 69% | 2753 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 53,969 psi | 85% | 2969 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,181 psi | 74% | 2772 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,848 psi | 75% | 2867 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 38,130 psi | 60% | 2690 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 27,833 psi | 44% | 2510 fps | 96.2% |
| Somchem S385 | <<locked>> | 96% | 44,512 psi | 70% | 2851 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 53,751 psi | 84% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,182 psi | 76% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,947 psi | 69% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,324 psi | 69% | 2762 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,303 psi | 57% | 2621 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 34,766 psi | 54% | 2628 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 49,864 psi | 78% | 2884 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,815 psi | 67% | 2749 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,272 psi | 54% | 2628 fps | 95% |
| Vihtavuori N555 | <<locked>> | 90% | 33,286 psi | 52% | 2671 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,198 psi | 50% | 2543 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 49,922 psi | 78% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,772 psi | 69% | 2864 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,950 psi | 45% | 2615 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,788 psi | 72% | 2851 fps | 99.7% |
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 99 powders for .308 Norma Mag. loaded with the .308 | 156gr | Reichenbeg HDB Ogival. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,169 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, Alliant Power Pro Varmint 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .308 Norma Mag. with the .308 | 156gr | Reichenbeg HDB Ogival 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.