Load Specifications
Bullet:.308 | 165gr | Hornady ECX
Bullet Manufacturer:Hornady
Bullet Weight:165 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.308 Norma Mag. load data
Case Length (l3):2.559"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.0
Load data in caliber .308 Norma Mag. with .308 | 165gr | Hornady ECX bullet and 104 powders. The key underlying parameters are shown in the table above.
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 2495 | <<locked>> | 86% | 57,319 psi | 90% | 2884 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,753 psi | 87% | 2900 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2864 fps | 98.4% |
| Accurate 4064 | <<locked>> | 88% | 57,580 psi | 90% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,534 psi | 85% | 2986 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,476 psi | 84% | 3068 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 57,377 psi | 90% | 2972 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,013 psi | 86% | 2923 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3028 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,014 psi | 88% | 2917 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,838 psi | 84% | 3041 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,101 psi | 88% | 3025 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,347 psi | 87% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,738 psi | 87% | 2966 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,782 psi | 87% | 3048 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,334 psi | 90% | 3081 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,259 psi | 87% | 3015 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,689 psi | 76% | 2946 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,745 psi | 72% | 2890 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,030 psi | 63% | 2789 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3084 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,450 psi | 90% | 2989 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,217 psi | 88% | 2963 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,689 psi | 76% | 2946 fps | 96.2% |
| Bofors RP7 | <<locked>> | 92% | 55,680 psi | 87% | 2936 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,363 psi | 90% | 2897 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,854 psi | 88% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,927 psi | 89% | 2979 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 57,290 psi | 90% | 3041 fps | 99% |
| Hodgdon H4350 | <<locked>> | 92% | 57,377 psi | 90% | 3002 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 54,317 psi | 85% | 2927 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,825 psi | 87% | 2969 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,447 psi | 85% | 2963 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,940 psi | 85% | 3022 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 56% | 1827 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,608 psi | 87% | 2933 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,810 psi | 86% | 2907 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,476 psi | 85% | 2907 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,319 psi | 90% | 2940 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 56,652 psi | 89% | 2969 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,157 psi | 85% | 2917 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 55,100 psi | 86% | 2979 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 57,217 psi | 90% | 2995 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,014 psi | 88% | 2917 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,508 psi | 90% | 2943 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,304 psi | 88% | 2894 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,346 psi | 85% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,246 psi | 90% | 2963 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 55,071 psi | 86% | 2949 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,987 psi | 63% | 2700 fps | 96.4% |
| Norma 201 | <<locked>> | 84% | 55,709 psi | 87% | 2910 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,681 psi | 89% | 2910 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,969 psi | 86% | 2953 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,896 psi | 84% | 2966 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,750 psi | 81% | 3035 fps | 98.2% |
| Norma URP | <<locked>> | 96% | 57,188 psi | 90% | 3028 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,941 psi | 88% | 2979 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,217 psi | 88% | 3028 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 56,260 psi | 88% | 2943 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,260 psi | 88% | 2959 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,492 psi | 57% | 1870 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,826 psi | 89% | 2959 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,898 psi | 89% | 3041 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,695 psi | 89% | 3071 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,578 psi | 86% | 3009 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,595 psi | 90% | 3104 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 56,347 psi | 88% | 2887 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,478 psi | 89% | 2913 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,101 psi | 88% | 2953 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,288 psi | 85% | 2940 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2999 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 55,680 psi | 87% | 2936 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,246 psi | 90% | 2963 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,508 psi | 90% | 2943 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,346 psi | 85% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,071 psi | 86% | 2949 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,476 psi | 85% | 2966 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,694 psi | 86% | 2917 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,869 psi | 88% | 2943 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,855 psi | 89% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,346 psi | 85% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,537 psi | 90% | 2917 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 2992 fps | 97.3% |
| Somchem S335 | <<locked>> | 84% | 56,405 psi | 88% | 2841 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,520 psi | 85% | 2907 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,202 psi | 88% | 2949 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,275 psi | 88% | 3031 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2972 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 84% | 57,377 psi | 90% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,623 psi | 89% | 2871 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,174 psi | 90% | 2887 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,099 psi | 85% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,883 psi | 88% | 2969 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,326 psi | 74% | 2828 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 56,347 psi | 88% | 2913 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,434 psi | 87% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,926 psi | 86% | 2972 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,198 psi | 80% | 2969 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,840 psi | 88% | 2940 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,116 psi | 90% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,580 psi | 90% | 3045 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,205 psi | 65% | 2927 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,927 psi | 88% | 2949 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2910 fps | 96.6% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 46,876 psi | 73% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,745 psi | 72% | 2726 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 36,637 psi | 57% | 2628 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 44,411 psi | 70% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,170 psi | 52% | 2562 fps | 95.9% |
| Accurate High Country | <<locked>> | 98% | 49,806 psi | 78% | 2999 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,270 psi | 79% | 2861 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,714 psi | 67% | 2707 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 46,151 psi | 72% | 2848 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,446 psi | 82% | 2861 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,644 psi | 73% | 2913 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 45,934 psi | 72% | 2844 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,844 psi | 67% | 2733 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,818 psi | 72% | 2799 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,127 psi | 52% | 2579 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,405 psi | 59% | 2713 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,353 psi | 71% | 2835 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,455 psi | 71% | 2881 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,080 psi | 46% | 2487 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,172 psi | 55% | 2667 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,620 psi | 53% | 2671 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,183 psi | 79% | 2874 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,801 psi | 67% | 2736 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 45,455 psi | 71% | 2881 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 43,221 psi | 68% | 2713 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,012 psi | 85% | 2848 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,040 psi | 82% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,410 psi | 68% | 2743 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 40,959 psi | 64% | 2743 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 44,179 psi | 69% | 2766 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 50,836 psi | 80% | 2871 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,516 psi | 48% | 2474 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,355 psi | 74% | 2848 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 43,149 psi | 68% | 2818 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,716 psi | 42% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,907 psi | 77% | 2822 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,300 psi | 80% | 2858 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,904 psi | 70% | 2740 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,326 psi | 74% | 2769 fps | 97.2% |
| IMR 4350 | <<locked>> | 86% | 41,249 psi | 65% | 2690 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,221 psi | 66% | 2694 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 32,285 psi | 51% | 2523 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 47,007 psi | 74% | 2828 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,446 psi | 82% | 2861 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,140 psi | 79% | 2835 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,835 psi | 78% | 2792 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,034 psi | 71% | 2743 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,927 psi | 58% | 2582 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 39,987 psi | 63% | 2667 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 37,565 psi | 59% | 2648 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,153 psi | 77% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,792 psi | 78% | 2808 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,150 psi | 71% | 2785 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 46,934 psi | 74% | 2844 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 41,771 psi | 65% | 2838 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,504 psi | 53% | 2566 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,310 psi | 71% | 2805 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,420 psi | 59% | 2671 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 52,562 psi | 82% | 2884 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,460 psi | 82% | 2897 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 43% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,700 psi | 68% | 2730 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,255 psi | 77% | 2917 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,827 psi | 62% | 2779 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,025 psi | 52% | 2579 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 35,070 psi | 55% | 2648 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 52,982 psi | 83% | 2838 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,833 psi | 73% | 2759 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,176 psi | 63% | 2677 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 50,966 psi | 80% | 2881 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 96% | 47,500 psi | 74% | 2877 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 84% | 43,221 psi | 68% | 2713 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,927 psi | 58% | 2582 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,140 psi | 79% | 2835 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,034 psi | 71% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,987 psi | 63% | 2667 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,379 psi | 65% | 2733 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,169 psi | 80% | 2861 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,805 psi | 76% | 2831 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,299 psi | 79% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,221 psi | 66% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,307 psi | 65% | 2635 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,065 psi | 74% | 2871 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,951 psi | 78% | 2746 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,039 psi | 80% | 2851 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,843 psi | 64% | 2684 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,965 psi | 47% | 2516 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 42,003 psi | 66% | 2736 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 50,836 psi | 80% | 2736 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,833 psi | 73% | 2730 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,195 psi | 74% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,899 psi | 61% | 2615 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,838 psi | 55% | 2569 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 44,150 psi | 69% | 2769 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 52,881 psi | 83% | 2861 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,527 psi | 71% | 2730 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,374 psi | 54% | 2569 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 29,689 psi | 47% | 2507 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,432 psi | 54% | 2546 fps | 98.4% |
| Winchester 748 | <<locked>> | 80% | 53,388 psi | 84% | 2913 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,959 psi | 64% | 2743 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,369 psi | 43% | 2510 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,747 psi | 76% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,095 psi | 75% | 2848 fps | 95.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 104 powders for .308 Norma Mag. loaded with the .308 | 165gr | Hornady ECX. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,104 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,104 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 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 165.0 gr projectile in 0.308" calls for a 1:6.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.