Load Specifications
Load data in caliber .338 Blaser Mag. with .338 | 210gr | Impala RNFP KO bullet and 94 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-16 and Ramshot Hunter.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 54,404 psi | 89% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,737 psi | 90% | 2753 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,369 psi | 78% | 2733 fps | 98.1% |
| Accurate 4064 | <<locked>> | 86% | 54,433 psi | 89% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,156 psi | 87% | 2844 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 52,953 psi | 87% | 2779 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,577 psi | 88% | 2776 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,867 psi | 88% | 2864 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,897 psi | 90% | 2772 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,025 psi | 85% | 2890 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,215 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,650 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,534 psi | 88% | 2890 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,520 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,924 psi | 87% | 2854 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,396 psi | 73% | 2756 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,392 psi | 65% | 2661 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,734 psi | 82% | 2927 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,141 psi | 86% | 2789 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 51,953 psi | 85% | 2776 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,723 psi | 90% | 2792 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,679 psi | 90% | 2808 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,359 psi | 86% | 2782 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 55,100 psi | 90% | 2887 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 52,141 psi | 86% | 2792 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 82% | 53,461 psi | 88% | 2789 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,432 psi | 88% | 2818 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,794 psi | 87% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,503 psi | 85% | 2861 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 60% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,172 psi | 89% | 2785 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,592 psi | 88% | 2769 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,301 psi | 88% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,823 psi | 87% | 2736 fps | 98.1% |
| IMR 4350 | <<locked>> | 96% | 54,520 psi | 90% | 2815 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,736 psi | 87% | 2766 fps | 98% |
| IMR 4831 | <<locked>> | 96% | 53,505 psi | 88% | 2835 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 52,779 psi | 87% | 2805 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,897 psi | 90% | 2772 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,098 psi | 87% | 2756 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,054 psi | 85% | 2700 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,650 psi | 88% | 2759 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,866 psi | 87% | 2766 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 53,896 psi | 88% | 2805 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,045 psi | 66% | 2595 fps | 96.4% |
| Norma 201 | <<locked>> | 82% | 52,141 psi | 86% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,431 psi | 86% | 2726 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,940 psi | 89% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 94% | 51,663 psi | 85% | 2808 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 49,414 psi | 81% | 2881 fps | 97.6% |
| Norma URP | <<locked>> | 94% | 51,909 psi | 85% | 2828 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 54,041 psi | 89% | 2835 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 53,737 psi | 88% | 2874 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 54,969 psi | 90% | 2795 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,810 psi | 90% | 2812 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 61% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,083 psi | 86% | 2759 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,911 psi | 90% | 2887 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,128 psi | 89% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,417 psi | 86% | 2861 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,694 psi | 90% | 2936 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 52,808 psi | 87% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,056 psi | 90% | 2815 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,040 psi | 85% | 2841 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 54,723 psi | 90% | 2792 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,866 psi | 87% | 2766 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,098 psi | 87% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,650 psi | 88% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,896 psi | 88% | 2805 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,605 psi | 86% | 2818 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,824 psi | 88% | 2776 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,317 psi | 89% | 2795 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,837 psi | 87% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,214 psi | 87% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,794 psi | 87% | 2720 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,532 psi | 85% | 2838 fps | 96.6% |
| Somchem S335 | <<locked>> | 82% | 52,649 psi | 86% | 2661 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,127 psi | 87% | 2762 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,967 psi | 85% | 2762 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,330 psi | 88% | 2881 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,939 psi | 87% | 2822 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 82% | 53,040 psi | 87% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,649 psi | 86% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,750 psi | 87% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,895 psi | 87% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,838 psi | 88% | 2818 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 86% | 54,273 psi | 89% | 2749 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,287 psi | 87% | 2831 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,458 psi | 81% | 2835 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,621 psi | 88% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,100 psi | 90% | 2887 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,277 psi | 66% | 2792 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,418 psi | 89% | 2805 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,487 psi | 81% | 2753 fps | 95.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 48,327 psi | 79% | 2628 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,455 psi | 75% | 2595 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 36,796 psi | 60% | 2530 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,629 psi | 75% | 2631 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,142 psi | 56% | 2484 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,835 psi | 82% | 2726 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,409 psi | 70% | 2582 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 47,601 psi | 78% | 2756 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,721 psi | 85% | 2726 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,629 psi | 75% | 2776 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,772 psi | 70% | 2612 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,643 psi | 75% | 2674 fps | 99.4% |
| Alliant Reloder-16 | 58.2 gr | 80% | 33,460 psi | 55% | 2477 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,217 psi | 61% | 2602 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,905 psi | 77% | 2749 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,181 psi | 46% | 2359 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,130 psi | 61% | 2608 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,779 psi | 55% | 2575 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,892 psi | 80% | 2733 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 43,004 psi | 71% | 2625 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 43,250 psi | 71% | 2592 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,314 psi | 84% | 2756 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,453 psi | 71% | 2625 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 40,292 psi | 66% | 2618 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 46,253 psi | 76% | 2687 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 50,386 psi | 83% | 2740 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,154 psi | 51% | 2385 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,354 psi | 76% | 2717 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,177 psi | 69% | 2684 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 45% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,993 psi | 79% | 2687 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,517 psi | 83% | 2723 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,585 psi | 73% | 2615 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,920 psi | 77% | 2635 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 43,134 psi | 71% | 2615 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,742 psi | 69% | 2566 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 32,895 psi | 54% | 2438 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 46,746 psi | 77% | 2703 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,721 psi | 85% | 2726 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,966 psi | 82% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,255 psi | 81% | 2657 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,165 psi | 74% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,594 psi | 62% | 2480 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 40,292 psi | 66% | 2556 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 37,550 psi | 62% | 2546 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,298 psi | 81% | 2680 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,327 psi | 81% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,078 psi | 74% | 2664 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 48,559 psi | 80% | 2756 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 40,901 psi | 67% | 2707 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 33,794 psi | 55% | 2470 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 44,541 psi | 73% | 2677 fps | 99.5% |
| Ramshot Hunter | 64.8 gr | 84% | 37,144 psi | 61% | 2556 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,648 psi | 85% | 2743 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,488 psi | 85% | 2762 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 45% | 1575 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,439 psi | 71% | 2605 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,182 psi | 79% | 2779 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,378 psi | 65% | 2657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,344 psi | 55% | 2487 fps | 95.7% |
| ReloadSwiss RS 70 | 65.3 gr | 82% | 35,157 psi | 58% | 2539 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 47,007 psi | 77% | 2635 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,698 psi | 67% | 2572 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 96% | 45,905 psi | 75% | 2736 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 43,250 psi | 71% | 2592 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,594 psi | 62% | 2480 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,966 psi | 82% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,165 psi | 74% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,292 psi | 66% | 2556 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,944 psi | 67% | 2615 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,459 psi | 83% | 2723 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,109 psi | 79% | 2697 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,850 psi | 82% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,018 psi | 69% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,394 psi | 68% | 2520 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,484 psi | 75% | 2730 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,806 psi | 82% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,864 psi | 82% | 2710 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,176 psi | 68% | 2575 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,763 psi | 51% | 2438 fps | 98.4% |
| Somchem S385 | <<locked>> | 94% | 44,092 psi | 72% | 2671 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 50,067 psi | 82% | 2602 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,615 psi | 77% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,731 psi | 77% | 2612 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,088 psi | 64% | 2507 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,099 psi | 58% | 2467 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 80% | 45,295 psi | 74% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,809 psi | 57% | 2477 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 30,342 psi | 50% | 2431 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,519 psi | 57% | 2441 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 40,422 psi | 66% | 2621 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,268 psi | 46% | 2438 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,863 psi | 79% | 2703 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,427 psi | 76% | 2700 fps | 95% |
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 94 powders for .338 Blaser Mag. loaded with the .338 | 210gr | Impala RNFP KO. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,936 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.338" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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-16, Ramshot Hunter rank at the top here: for .338 Blaser Mag. with the .338 | 210gr | Impala RNFP KO 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.