Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 170gr | Lapua Lock Base bullet and 95 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-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 2495 | <<locked>> | 84% | 56,086 psi | 88% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,537 psi | 90% | 2881 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,850 psi | 80% | 2858 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 56,333 psi | 88% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,971 psi | 89% | 2972 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,579 psi | 87% | 2897 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,550 psi | 89% | 2900 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,375 psi | 85% | 2953 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,666 psi | 87% | 3022 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,159 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,508 psi | 90% | 2946 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,493 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,288 psi | 87% | 3002 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 2995 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 2936 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,877 psi | 75% | 2881 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,669 psi | 65% | 2789 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 3071 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,463 psi | 87% | 2913 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 54,549 psi | 85% | 2887 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 2936 fps | 96.9% |
| Bofors RP7 | <<locked>> | 92% | 57,508 psi | 90% | 2920 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,682 psi | 90% | 2923 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 55,114 psi | 86% | 2904 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 55,550 psi | 87% | 2969 fps | 99% |
| Hodgdon H4350 | <<locked>> | 90% | 55,463 psi | 87% | 2927 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 82% | 56,173 psi | 88% | 2907 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,288 psi | 85% | 2897 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,231 psi | 88% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,854 psi | 88% | 3005 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 57% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,145 psi | 90% | 2907 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,797 psi | 89% | 2884 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,043 psi | 88% | 2884 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,419 psi | 87% | 2864 fps | 98.8% |
| IMR 4350 | <<locked>> | 94% | 54,853 psi | 86% | 2900 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,709 psi | 87% | 2894 fps | 98.8% |
| IMR 4831 | <<locked>> | 96% | 57,334 psi | 90% | 2963 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,506 psi | 87% | 2923 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,421 psi | 90% | 2936 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 55,941 psi | 88% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,505 psi | 85% | 2822 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,347 psi | 88% | 2877 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,695 psi | 87% | 2894 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 57,072 psi | 89% | 2933 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,192 psi | 66% | 2703 fps | 97.3% |
| Norma 201 | <<locked>> | 84% | 57,725 psi | 90% | 2890 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,882 psi | 86% | 2838 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,782 psi | 89% | 2930 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,622 psi | 87% | 2949 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 53,838 psi | 84% | 3025 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 55,666 psi | 87% | 2956 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,911 psi | 84% | 2904 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,331 psi | 85% | 2953 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 58% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,969 psi | 86% | 2884 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,955 psi | 86% | 2963 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,839 psi | 86% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,637 psi | 89% | 2995 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,332 psi | 87% | 3022 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 54,781 psi | 86% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,650 psi | 86% | 2884 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,202 psi | 88% | 2927 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 2986 fps | 98% |
| Rottweil R 907 | <<locked>> | 92% | 57,508 psi | 90% | 2920 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,695 psi | 87% | 2894 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,941 psi | 88% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,347 psi | 88% | 2877 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,072 psi | 89% | 2933 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,101 psi | 88% | 2943 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,811 psi | 89% | 2904 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,537 psi | 90% | 2920 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,013 psi | 86% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,840 psi | 88% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,550 psi | 87% | 2844 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,883 psi | 88% | 2979 fps | 97.9% |
| Somchem S335 | <<locked>> | 82% | 54,868 psi | 86% | 2769 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,492 psi | 89% | 2890 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,636 psi | 86% | 2881 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,665 psi | 86% | 2959 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,058 psi | 89% | 2959 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 82% | 55,506 psi | 87% | 2753 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,056 psi | 86% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,332 psi | 87% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,941 psi | 88% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,360 psi | 85% | 2900 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 2818 fps | 97% |
| Vihtavuori N540 | <<locked>> | 86% | 57,159 psi | 90% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,014 psi | 89% | 2956 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,403 psi | 84% | 2956 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,911 psi | 84% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,796 psi | 87% | 2972 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,120 psi | 68% | 2927 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,696 psi | 90% | 2927 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,635 psi | 84% | 2897 fps | 97.2% |
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 2495 | <<locked>> | 80% | 49,371 psi | 77% | 2720 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,282 psi | 74% | 2710 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 36,129 psi | 57% | 2572 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,731 psi | 73% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,186 psi | 55% | 2569 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 80% | 52,040 psi | 82% | 2841 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,193 psi | 69% | 2690 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 44,759 psi | 70% | 2779 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,501 psi | 76% | 2904 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,599 psi | 70% | 2717 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,572 psi | 75% | 2785 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,606 psi | 54% | 2579 fps | 97% |
| Alliant Reloder-17 | 60.4 gr | 80% | 38,957 psi | 61% | 2707 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,295 psi | 69% | 2769 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,338 psi | 69% | 2815 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,977 psi | 42% | 2382 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,519 psi | 54% | 2608 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 33,025 psi | 52% | 2615 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,764 psi | 81% | 2854 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 44,628 psi | 70% | 2723 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 44,338 psi | 69% | 2815 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 42,206 psi | 66% | 2648 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 54,056 psi | 85% | 2871 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 45,252 psi | 71% | 2736 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 39,813 psi | 62% | 2674 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 42,960 psi | 67% | 2697 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 52,576 psi | 82% | 2851 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,068 psi | 50% | 2474 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,211 psi | 77% | 2831 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,843 psi | 66% | 2749 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 42% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,285 psi | 79% | 2799 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,214 psi | 83% | 2835 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,470 psi | 73% | 2726 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,878 psi | 77% | 2753 fps | 97.8% |
| IMR 4350 | <<locked>> | 84% | 40,190 psi | 63% | 2625 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,944 psi | 64% | 2625 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,910 psi | 53% | 2523 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 48,776 psi | 76% | 2812 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 53,983 psi | 85% | 2881 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 52,286 psi | 82% | 2818 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,285 psi | 80% | 2772 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,804 psi | 73% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,595 psi | 60% | 2575 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 39,146 psi | 61% | 2605 fps | 95.5% |
| Lovex S071 | <<locked>> | 96% | 37,144 psi | 58% | 2598 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 51,024 psi | 80% | 2789 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,561 psi | 81% | 2789 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,978 psi | 74% | 2772 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,310 psi | 71% | 2769 fps | 95.1% |
| Norma MRP | <<locked>> | 92% | 40,669 psi | 64% | 2769 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,201 psi | 55% | 2566 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 47,195 psi | 74% | 2792 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 36,506 psi | 57% | 2608 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,514 psi | 43% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,223 psi | 71% | 2713 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,256 psi | 80% | 2904 fps | 99.9% |
| ReloadSwiss RS 60 | 60.4 gr | 80% | 41,423 psi | 65% | 2766 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,925 psi | 55% | 2585 fps | 96.5% |
| ReloadSwiss RS 70 | 61.4 gr | 80% | 34,214 psi | 54% | 2585 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 48,646 psi | 76% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,134 psi | 66% | 2671 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 49,327 psi | 77% | 2812 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 43,250 psi | 68% | 2753 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 42,206 psi | 66% | 2648 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,595 psi | 60% | 2575 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,286 psi | 82% | 2818 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,804 psi | 73% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,146 psi | 61% | 2605 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,163 psi | 68% | 2723 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,939 psi | 83% | 2841 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,575 psi | 79% | 2812 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,880 psi | 81% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,714 psi | 69% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,292 psi | 63% | 2572 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,716 psi | 72% | 2802 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 51,648 psi | 81% | 2723 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,692 psi | 83% | 2831 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,612 psi | 67% | 2674 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 31,647 psi | 50% | 2520 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 41,031 psi | 64% | 2674 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 52,373 psi | 82% | 2710 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,646 psi | 76% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,892 psi | 77% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,596 psi | 64% | 2605 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,521 psi | 57% | 2566 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 43,062 psi | 67% | 2707 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 47,253 psi | 74% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,085 psi | 57% | 2569 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 29,414 psi | 46% | 2461 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,839 psi | 56% | 2539 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 40,016 psi | 63% | 2680 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,122 psi | 43% | 2464 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,357 psi | 79% | 2818 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,543 psi | 73% | 2776 fps | 95.6% |
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 111 powders for .308 Norma Mag. loaded with the .308 | 170gr | Lapua Lock Base. Alliant Reloder-26 delivers the highest muzzle velocity at 3,071 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,071 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:13.5 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-17, ReloadSwiss RS 60 rank at the top here: for .308 Norma Mag. with the .308 | 170gr | Lapua Lock Base they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, 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.