Load Specifications
Load data in caliber .30 R Blaser with .308 | 180gr | Sellier & Bellot HPC bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 50,444 psi | 86% | 2552 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,417 psi | 89% | 2595 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,512 psi | 76% | 2559 fps | 97.4% |
| Accurate 4064 | <<locked>> | 86% | 50,705 psi | 86% | 2602 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 50,198 psi | 85% | 2674 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 82% | 50,589 psi | 86% | 2621 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 51,735 psi | 88% | 2628 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,953 psi | 88% | 2700 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,794 psi | 90% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 50,038 psi | 85% | 2730 fps | 99.8% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,837 psi | 88% | 2703 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 51,866 psi | 88% | 2648 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 52,112 psi | 89% | 2664 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 51,503 psi | 88% | 2730 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,402 psi | 89% | 2759 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,068 psi | 87% | 2694 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,192 psi | 72% | 2589 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,355 psi | 81% | 2746 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 50,154 psi | 85% | 2631 fps | 99.6% |
| Bofors RP3 | <<locked>> | 88% | 52,199 psi | 89% | 2657 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 52,489 psi | 89% | 2635 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 52,330 psi | 89% | 2651 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,040 psi | 90% | 2671 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 52,910 psi | 90% | 2723 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 90% | 50,227 psi | 86% | 2635 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 82% | 51,097 psi | 87% | 2635 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 51,343 psi | 87% | 2661 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 50,575 psi | 86% | 2661 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,127 psi | 90% | 2753 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,650 psi | 61% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 52,315 psi | 89% | 2635 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 51,140 psi | 87% | 2618 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 51,155 psi | 87% | 2612 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 50,821 psi | 87% | 2585 fps | 97.6% |
| IMR 4350 | <<locked>> | 96% | 52,692 psi | 90% | 2661 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 50,879 psi | 87% | 2612 fps | 97.6% |
| IMR 4831 | <<locked>> | 96% | 51,082 psi | 87% | 2671 fps | 99.6% |
| IMR 4895 | <<locked>> | 84% | 50,212 psi | 85% | 2644 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 52,794 psi | 90% | 2625 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 50,227 psi | 86% | 2598 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 50,009 psi | 85% | 2556 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 51,097 psi | 87% | 2605 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 50,618 psi | 86% | 2612 fps | 98.7% |
| Lovex S070 | <<locked>> | 94% | 51,416 psi | 88% | 2644 fps | 98% |
| Norma 201 | <<locked>> | 84% | 52,649 psi | 90% | 2621 fps | 100% |
| Norma 202 | <<locked>> | 82% | 50,038 psi | 85% | 2575 fps | 100% |
| Norma 203B | <<locked>> | 86% | 51,401 psi | 88% | 2654 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,098 psi | 90% | 2703 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 47,123 psi | 80% | 2703 fps | 97% |
| Norma URP | <<locked>> | 96% | 52,866 psi | 90% | 2713 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 51,967 psi | 88% | 2677 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 51,547 psi | 88% | 2707 fps | 98.7% |
| Ramshot TAC | <<locked>> | 82% | 52,852 psi | 90% | 2641 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,562 psi | 89% | 2657 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,201 psi | 62% | 1690 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 49,864 psi | 85% | 2602 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,634 psi | 90% | 2726 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,301 psi | 89% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 50,053 psi | 85% | 2697 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,953 psi | 90% | 2772 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 50,140 psi | 85% | 2575 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 52,315 psi | 89% | 2654 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,748 psi | 85% | 2674 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 92% | 52,489 psi | 89% | 2635 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 50,618 psi | 86% | 2612 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 50,227 psi | 86% | 2598 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 51,097 psi | 87% | 2605 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 51,416 psi | 88% | 2644 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 50,444 psi | 86% | 2661 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 51,285 psi | 87% | 2618 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 52,344 psi | 89% | 2644 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 50,778 psi | 86% | 2520 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 51,010 psi | 87% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 50,386 psi | 86% | 2562 fps | 97.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,269 psi | 84% | 2667 fps | 96% |
| Somchem S335 | <<locked>> | 82% | 50,285 psi | 86% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 51,053 psi | 87% | 2612 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 52,634 psi | 90% | 2654 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 50,966 psi | 87% | 2713 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,502 psi | 86% | 2654 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 82% | 51,155 psi | 87% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 49,806 psi | 85% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 50,575 psi | 86% | 2559 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 50,633 psi | 86% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 51,750 psi | 88% | 2661 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 53,026 psi | 90% | 2621 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 52,011 psi | 89% | 2598 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 51,010 psi | 87% | 2667 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,688 psi | 79% | 2661 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 51,793 psi | 88% | 2638 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,156 psi | 90% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 49,676 psi | 85% | 2671 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,855 psi | 64% | 2608 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,141 psi | 89% | 2651 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 44,251 psi | 75% | 2467 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,122 psi | 79% | 2493 fps | 95.8% |
| Accurate 3100 | <<locked>> | 96% | 38,638 psi | 66% | 2454 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 41,843 psi | 71% | 2464 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,199 psi | 57% | 2356 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 47,543 psi | 81% | 2572 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,248 psi | 69% | 2431 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 48,689 psi | 83% | 2648 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,588 psi | 84% | 2579 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,584 psi | 74% | 2615 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,660 psi | 83% | 2651 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,277 psi | 69% | 2454 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,163 psi | 73% | 2516 fps | 99% |
| Alliant Reloder-16 | 48.7 gr | 82% | 33,272 psi | 57% | 2369 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,911 psi | 59% | 2434 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,979 psi | 82% | 2641 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,993 psi | 49% | 2283 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,344 psi | 57% | 2448 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,891 psi | 80% | 2579 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 40,089 psi | 68% | 2461 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 43,526 psi | 74% | 2487 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,907 psi | 83% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,683 psi | 69% | 2464 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 40,553 psi | 69% | 2510 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 88% | 46,949 psi | 80% | 2579 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 47,993 psi | 82% | 2585 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,718 psi | 49% | 2224 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,266 psi | 75% | 2562 fps | 99.9% |
| Hodgdon Superformance | 59.5 gr | 88% | 43,018 psi | 73% | 2579 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,585 psi | 45% | 1473 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,905 psi | 78% | 2536 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 47,877 psi | 82% | 2569 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,279 psi | 72% | 2461 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,904 psi | 76% | 2487 fps | 96.4% |
| IMR 4350 | <<locked>> | 90% | 43,787 psi | 75% | 2513 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,337 psi | 72% | 2464 fps | 95.5% |
| IMR 4831 | <<locked>> | 82% | 32,227 psi | 55% | 2316 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 44,251 psi | 75% | 2546 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 49,588 psi | 84% | 2579 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,108 psi | 80% | 2552 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,253 psi | 80% | 2513 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,540 psi | 72% | 2470 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,144 psi | 63% | 2369 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 40,089 psi | 68% | 2444 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 46,470 psi | 79% | 2526 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,934 psi | 80% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,569 psi | 72% | 2507 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 49,777 psi | 85% | 2651 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 41,234 psi | 70% | 2592 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 33,518 psi | 57% | 2359 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 42,322 psi | 72% | 2520 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 37,057 psi | 63% | 2444 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 49,530 psi | 84% | 2589 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,197 psi | 84% | 2605 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,137 psi | 46% | 1512 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,973 psi | 70% | 2444 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,861 psi | 78% | 2618 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,159 psi | 63% | 2497 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,924 psi | 56% | 2372 fps | 95.3% |
| ReloadSwiss RS 70 | 54.6 gr | 84% | 35,172 psi | 60% | 2431 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 44,193 psi | 75% | 2480 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,826 psi | 64% | 2411 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 46,586 psi | 79% | 2621 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 86% | 43,526 psi | 74% | 2487 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,144 psi | 63% | 2369 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,108 psi | 80% | 2552 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,540 psi | 72% | 2470 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 40,089 psi | 68% | 2444 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,740 psi | 66% | 2457 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,950 psi | 82% | 2566 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,035 psi | 78% | 2546 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,601 psi | 81% | 2474 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,813 psi | 68% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,626 psi | 71% | 2418 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 46,137 psi | 79% | 2615 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 47,282 psi | 80% | 2474 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,732 psi | 81% | 2562 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,392 psi | 65% | 2415 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 28,050 psi | 48% | 2260 fps | 97.1% |
| Somchem S385 | <<locked>> | 96% | 44,411 psi | 76% | 2556 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 48,008 psi | 82% | 2464 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,947 psi | 75% | 2457 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,599 psi | 76% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,695 psi | 62% | 2352 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 32,663 psi | 56% | 2310 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 49,748 psi | 85% | 2572 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,772 psi | 73% | 2461 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,389 psi | 59% | 2359 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 31,299 psi | 53% | 2352 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,358 psi | 55% | 2287 fps | 97.5% |
| Winchester 748 | <<locked>> | 80% | 49,879 psi | 85% | 2618 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,785 psi | 69% | 2513 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,354 psi | 47% | 2300 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,542 psi | 78% | 2549 fps | 99.8% |
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 .30 R Blaser loaded with the .308 | 180gr | Sellier & Bellot HPC. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,772 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,772 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 (405 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-16, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for .30 R Blaser with the .308 | 180gr | Sellier & Bellot HPC 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.