Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 170gr | Winchester FN Silv.Tip 30-30 bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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>> | 82% | 54,824 psi | 86% | 2805 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,072 psi | 88% | 2874 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,853 psi | 84% | 2913 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 55,303 psi | 87% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,101 psi | 88% | 2969 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 57,493 psi | 90% | 2936 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,376 psi | 87% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,014 psi | 89% | 3009 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,607 psi | 86% | 2999 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,563 psi | 86% | 3015 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,101 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,434 psi | 88% | 2940 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,579 psi | 89% | 3022 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,244 psi | 85% | 2992 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,275 psi | 88% | 2999 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,461 psi | 84% | 2999 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 2930 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,019 psi | 69% | 2851 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,128 psi | 85% | 3071 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,580 psi | 90% | 2956 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,081 psi | 77% | 2917 fps | 96.7% |
| Bofors RP3 | <<locked>> | 86% | 57,145 psi | 90% | 2936 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,461 psi | 84% | 2999 fps | 97.8% |
| Bofors RP7 | <<locked>> | 90% | 56,304 psi | 88% | 2917 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 57,522 psi | 90% | 2953 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 54,433 psi | 85% | 2963 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 54,375 psi | 85% | 2923 fps | 98% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,363 psi | 90% | 2986 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,942 psi | 89% | 2946 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,969 psi | 86% | 2933 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,592 psi | 86% | 2999 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1818 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,579 psi | 87% | 2894 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,752 psi | 86% | 2877 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,464 psi | 90% | 2910 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 57,319 psi | 90% | 2949 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,607 psi | 86% | 2890 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 56,376 psi | 88% | 2959 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,128 psi | 85% | 2913 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,420 psi | 88% | 2936 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,025 psi | 82% | 2969 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 56,304 psi | 88% | 2861 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,926 psi | 86% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,636 psi | 86% | 2890 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 55,854 psi | 88% | 2930 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,686 psi | 70% | 2759 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 56,246 psi | 88% | 2881 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,898 psi | 89% | 2874 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,724 psi | 87% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,433 psi | 85% | 2943 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3084 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 54,592 psi | 86% | 2953 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,521 psi | 89% | 2953 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,330 psi | 82% | 2986 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 57,159 psi | 90% | 3009 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,572 psi | 73% | 2851 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 58% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,392 psi | 90% | 2936 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,566 psi | 90% | 3012 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,682 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,912 psi | 88% | 2992 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,360 psi | 85% | 3018 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,960 psi | 67% | 2864 fps | 96.8% |
| Rottweil R 902 | <<locked>> | 84% | 56,985 psi | 89% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,000 psi | 89% | 2930 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,158 psi | 86% | 2923 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 98% | 55,434 psi | 87% | 2982 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 56,304 psi | 88% | 2917 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,636 psi | 86% | 2890 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 54,926 psi | 86% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,854 psi | 88% | 2930 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,114 psi | 86% | 2936 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,159 psi | 88% | 2913 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,029 psi | 89% | 2808 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,462 psi | 85% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,259 psi | 85% | 2838 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,940 psi | 86% | 2976 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 56,724 psi | 89% | 2805 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,927 psi | 89% | 2923 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,985 psi | 89% | 2917 fps | 96.2% |
| Somchem S365 | <<locked>> | 96% | 57,696 psi | 90% | 3009 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,188 psi | 88% | 2959 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 57,537 psi | 90% | 2792 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,290 psi | 90% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,682 psi | 90% | 2858 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,694 psi | 86% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,898 psi | 89% | 2946 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,851 psi | 81% | 2874 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 55,695 psi | 87% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,999 psi | 88% | 2953 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 3009 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 3071 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,434 psi | 88% | 2913 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,665 psi | 86% | 2966 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,585 psi | 71% | 2986 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,231 psi | 88% | 2917 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2953 fps | 98% |
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 2495 | <<locked>> | 80% | 51,329 psi | 80% | 2756 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,240 psi | 77% | 2762 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 35,810 psi | 56% | 2572 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 48,631 psi | 76% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,014 psi | 58% | 2618 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 80% | 53,954 psi | 85% | 2884 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,977 psi | 72% | 2736 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 43,888 psi | 69% | 2772 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 51,097 psi | 80% | 2936 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,836 psi | 80% | 2953 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,514 psi | 73% | 2762 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,487 psi | 78% | 2828 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,230 psi | 57% | 2631 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,017 psi | 64% | 2759 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,511 psi | 68% | 2766 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,656 psi | 68% | 2812 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,469 psi | 41% | 2372 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,127 psi | 53% | 2608 fps | 95.3% |
| Alliant Reloder-26 | 67.9 gr | 84% | 32,489 psi | 51% | 2608 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,925 psi | 85% | 2900 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 43,047 psi | 67% | 2799 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 46,760 psi | 73% | 2772 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,656 psi | 68% | 2812 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 41,133 psi | 64% | 2638 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 47,224 psi | 74% | 2782 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 38,986 psi | 61% | 2664 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 80% | 42,003 psi | 66% | 2690 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,664 psi | 84% | 2927 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,721 psi | 53% | 2523 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,372 psi | 81% | 2877 fps | 100% |
| Hodgdon Superformance | 68.3 gr | 82% | 40,741 psi | 64% | 2736 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 43% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,156 psi | 82% | 2841 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,370 psi | 76% | 2769 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,517 psi | 79% | 2799 fps | 98.3% |
| IMR 4350 | <<locked>> | 82% | 39,276 psi | 62% | 2618 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,525 psi | 67% | 2667 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 35,766 psi | 56% | 2572 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 50,778 psi | 80% | 2858 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,997 psi | 83% | 2881 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 48,660 psi | 76% | 2904 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 52,939 psi | 83% | 2812 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,573 psi | 76% | 2769 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,059 psi | 63% | 2618 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 38,377 psi | 60% | 2598 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 34,534 psi | 54% | 2543 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 52,808 psi | 83% | 2828 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,606 psi | 84% | 2828 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,863 psi | 77% | 2815 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,527 psi | 70% | 2766 fps | 95.2% |
| Norma MRP | <<locked>> | 90% | 40,147 psi | 63% | 2769 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 36,941 psi | 58% | 2615 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 49,371 psi | 77% | 2841 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,602 psi | 76% | 2913 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 35,766 psi | 56% | 2598 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 43,482 psi | 68% | 2792 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 43% | 1667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,210 psi | 74% | 2766 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,635 psi | 84% | 2949 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,569 psi | 68% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,753 psi | 58% | 2635 fps | 97.3% |
| ReloadSwiss RS 70 | 64.1 gr | 80% | 35,853 psi | 56% | 2641 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,074 psi | 63% | 2795 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 50,430 psi | 79% | 2782 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,063 psi | 69% | 2717 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 48,472 psi | 76% | 2808 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 42,438 psi | 67% | 2746 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 41,133 psi | 64% | 2638 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,059 psi | 63% | 2618 fps | 97.3% |
| Shooters World Precision | <<locked>> | 80% | 48,573 psi | 76% | 2769 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,377 psi | 60% | 2598 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,107 psi | 71% | 2769 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,547 psi | 82% | 2858 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,708 psi | 84% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,397 psi | 71% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,334 psi | 62% | 2562 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,933 psi | 70% | 2799 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 53,330 psi | 84% | 2759 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,280 psi | 69% | 2713 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 53,301 psi | 84% | 2858 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 33,330 psi | 52% | 2569 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 40,480 psi | 63% | 2674 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 54,244 psi | 85% | 2746 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,676 psi | 79% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,821 psi | 80% | 2759 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,351 psi | 66% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,232 psi | 60% | 2615 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 42,540 psi | 67% | 2707 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 49,197 psi | 77% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,855 psi | 59% | 2618 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 29,153 psi | 46% | 2454 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 98% | 53,432 psi | 84% | 3009 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,420 psi | 59% | 2585 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 39,189 psi | 61% | 2671 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,672 psi | 42% | 2457 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,547 psi | 82% | 2861 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,745 psi | 72% | 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 105 powders for .308 Norma Mag. loaded with the .308 | 170gr | Winchester FN Silv.Tip 30-30. Norma MRP delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,084 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 (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .308 Norma Mag. with the .308 | 170gr | Winchester FN Silv.Tip 30-30 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.