Load Specifications
Load data in caliber .308 Norma Mag. with .308 | 200gr | Berger Hybrid Target bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Accurate High Country.
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% | 55,941 psi | 88% | 2572 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,956 psi | 89% | 2648 fps | 99.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,650 psi | 86% | 2694 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 56,289 psi | 88% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,014 psi | 89% | 2736 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 55,753 psi | 87% | 2835 fps | 98.2% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,652 psi | 89% | 2831 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 86% | 56,231 psi | 88% | 2661 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,302 psi | 85% | 2733 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 2779 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,593 psi | 87% | 2779 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,259 psi | 85% | 2726 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,259 psi | 85% | 2726 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,971 psi | 89% | 2680 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,232 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,638 psi | 90% | 2789 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,245 psi | 87% | 2759 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,174 psi | 90% | 2772 fps | 99% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2776 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,285 psi | 80% | 2707 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,556 psi | 70% | 2644 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,013 psi | 86% | 2844 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,893 psi | 78% | 2703 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 54,273 psi | 85% | 2648 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2776 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 57,058 psi | 89% | 2687 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 84% | 54,563 psi | 86% | 2664 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,303 psi | 87% | 2736 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 88% | 55,303 psi | 87% | 2700 fps | 99% |
| Hodgdon H4831 | <<locked>> | 98% | 55,535 psi | 87% | 2726 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,462 psi | 85% | 2710 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,418 psi | 85% | 2667 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,840 psi | 88% | 2697 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,787 psi | 69% | 2680 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 90% | 55,680 psi | 87% | 2776 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,506 psi | 57% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,623 psi | 89% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,767 psi | 87% | 2644 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,679 psi | 86% | 2628 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 54,737 psi | 86% | 2674 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,332 psi | 87% | 2664 fps | 99.5% |
| IMR 4831 | <<locked>> | 94% | 57,159 psi | 90% | 2726 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,245 psi | 87% | 2680 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,116 psi | 90% | 2713 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,794 psi | 83% | 2753 fps | 97.4% |
| Lovex S060 | <<locked>> | 82% | 57,174 psi | 90% | 2625 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,956 psi | 88% | 2635 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,347 psi | 87% | 2661 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 56,623 psi | 89% | 2700 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,411 psi | 71% | 2556 fps | 99.1% |
| Norma 201 | <<locked>> | 82% | 57,246 psi | 90% | 2644 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,521 psi | 89% | 2687 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,230 psi | 87% | 2720 fps | 98.6% |
| Norma MRPᴾ | <<locked>> | 100% | 57,711 psi | 90% | 2854 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 55,477 psi | 87% | 2720 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,348 psi | 90% | 2717 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2769 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 54,230 psi | 85% | 2726 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,282 psi | 74% | 2648 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,333 psi | 59% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,578 psi | 86% | 2654 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,766 psi | 86% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,869 psi | 89% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,288 psi | 87% | 2789 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,497 psi | 68% | 2671 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 54,505 psi | 85% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,404 psi | 85% | 2644 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,898 psi | 88% | 2703 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 98% | 56,492 psi | 89% | 2759 fps | 99% |
| Rottweil R 907 | <<locked>> | 90% | 57,058 psi | 89% | 2687 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,347 psi | 87% | 2661 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 55,956 psi | 88% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,623 psi | 89% | 2700 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,072 psi | 88% | 2703 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,014 psi | 89% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,390 psi | 87% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,129 psi | 86% | 2618 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,999 psi | 88% | 2756 fps | 99% |
| Somchem S335 | <<locked>> | 82% | 57,696 psi | 90% | 2572 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,433 psi | 85% | 2641 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,580 psi | 90% | 2697 fps | 97.4% |
| Somchem S365 | <<locked>> | 94% | 54,882 psi | 86% | 2723 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,072 psi | 89% | 2736 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 54,955 psi | 86% | 2559 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,100 psi | 86% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,724 psi | 87% | 2618 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,740 psi | 90% | 2713 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2657 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 84% | 56,492 psi | 89% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,855 psi | 89% | 2723 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,537 psi | 90% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,128 psi | 85% | 2789 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,232 psi | 90% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,579 psi | 87% | 2740 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,383 psi | 73% | 2769 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,232 psi | 90% | 2684 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 2730 fps | 98.9% |
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% | 52,272 psi | 82% | 2526 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,038 psi | 78% | 2546 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 31,908 psi | 50% | 2283 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 49,574 psi | 78% | 2536 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,913 psi | 59% | 2425 fps | 98.9% |
| Accurate High Country | 63.3 gr | 90% | 42,322 psi | 66% | 2602 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 96% | 49,371 psi | 77% | 2717 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 46,659 psi | 73% | 2516 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,131 psi | 61% | 2457 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 45,281 psi | 71% | 2605 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,663 psi | 81% | 2723 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 39,421 psi | 62% | 2464 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 39,421 psi | 62% | 2464 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,239 psi | 74% | 2539 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,444 psi | 79% | 2605 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,912 psi | 58% | 2434 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,901 psi | 66% | 2552 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,001 psi | 61% | 2457 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 38,972 psi | 61% | 2500 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,064 psi | 42% | 2211 fps | 97.2% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,661 psi | 48% | 2323 fps | 95.4% |
| Alliant Reloder-26 | 58 gr | 80% | 28,892 psi | 45% | 2313 fps | 95.5% |
| Bofors RP15 | <<locked>> | 94% | 41,147 psi | 64% | 2546 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 47,630 psi | 75% | 2552 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 38,972 psi | 61% | 2500 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,887 psi | 66% | 2438 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,979 psi | 75% | 2566 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 39,798 psi | 62% | 2467 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,757 psi | 67% | 2487 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 94% | 48,660 psi | 76% | 2618 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,529 psi | 74% | 2598 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,563 psi | 54% | 2336 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,301 psi | 82% | 2648 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 38,551 psi | 60% | 2559 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 38,754 psi | 61% | 2480 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 43% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,011 psi | 83% | 2612 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,095 psi | 77% | 2546 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,242 psi | 80% | 2575 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 37,507 psi | 59% | 2369 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,337 psi | 68% | 2464 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 36,521 psi | 57% | 2382 fps | 98.7% |
| IMR 4895 | <<locked>> | 80% | 51,764 psi | 81% | 2628 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,514 psi | 74% | 2562 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 96% | 46,311 psi | 73% | 2641 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 53,867 psi | 84% | 2579 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,545 psi | 78% | 2546 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,756 psi | 64% | 2418 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 39,015 psi | 61% | 2402 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 31,096 psi | 49% | 2264 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 53,664 psi | 84% | 2595 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,806 psi | 78% | 2592 fps | 100% |
| Norma 204 | <<locked>> | 82% | 39,595 psi | 62% | 2451 fps | 95.1% |
| Norma MRP | <<locked>> | 86% | 35,766 psi | 56% | 2457 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 37,637 psi | 59% | 2418 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,053 psi | 78% | 2615 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,105 psi | 68% | 2592 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,564 psi | 57% | 2411 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 94% | 38,261 psi | 60% | 2477 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,789 psi | 44% | 1499 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,979 psi | 75% | 2552 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,527 psi | 70% | 2598 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,637 psi | 59% | 2444 fps | 98.7% |
| ReloadSwiss RS 70 | 57.4 gr | 80% | 36,419 psi | 57% | 2448 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,433 psi | 56% | 2480 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,300 psi | 80% | 2556 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,846 psi | 70% | 2503 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 43,453 psi | 68% | 2497 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 37,913 psi | 59% | 2438 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 41,887 psi | 66% | 2438 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,756 psi | 64% | 2418 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 49,545 psi | 78% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,015 psi | 61% | 2402 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,021 psi | 72% | 2556 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,447 psi | 84% | 2628 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,137 psi | 72% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,914 psi | 63% | 2365 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,263 psi | 63% | 2490 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 54,114 psi | 85% | 2526 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,092 psi | 71% | 2500 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,268 psi | 74% | 2536 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 34,113 psi | 53% | 2382 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,114 psi | 57% | 2372 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 51,605 psi | 81% | 2516 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,590 psi | 81% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,062 psi | 67% | 2434 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,059 psi | 61% | 2418 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 38,029 psi | 60% | 2408 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 49,922 psi | 78% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,551 psi | 60% | 2421 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 29,950 psi | 47% | 2283 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 94% | 47,297 psi | 74% | 2674 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,087 psi | 60% | 2388 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 39,987 psi | 63% | 2470 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,946 psi | 38% | 2185 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,621 psi | 84% | 2635 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,437 psi | 63% | 2461 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 97 powders for .308 Norma Mag. loaded with the .308 | 200gr | Berger Hybrid Target. Norma MRP delivers the highest muzzle velocity at 2,854 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,854 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 200.0 gr projectile in 0.308" calls for a 1:11.0 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. Alliant Reloder-26, ReloadSwiss RS 70, Accurate High Country rank at the top here: for .308 Norma Mag. with the .308 | 200gr | Berger Hybrid Target 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.