Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 180gr | Swift Scirocco 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 60, Alliant Power Pro 2000-MR and Alliant Reloder-17.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 49,356 psi | 90% | 2569 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 46,702 psi | 85% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 48,791 psi | 89% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,181 psi | 86% | 2575 fps | 96.1% |
| Accurate 4064 | <<locked>> | 90% | 46,789 psi | 85% | 2631 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,370 psi | 88% | 2743 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 48,254 psi | 88% | 2664 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 49,124 psi | 89% | 2661 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 47,616 psi | 86% | 2618 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 47,166 psi | 86% | 2592 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 47,007 psi | 85% | 2762 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 48,428 psi | 88% | 2680 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,298 psi | 89% | 2703 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,747 psi | 87% | 2749 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 48,515 psi | 88% | 2792 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,939 psi | 62% | 2510 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 37,246 psi | 68% | 2644 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 47,384 psi | 86% | 2671 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 48,602 psi | 88% | 2694 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 49,574 psi | 90% | 2661 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 84% | 49,792 psi | 90% | 2605 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,313 psi | 89% | 2694 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 47,413 psi | 86% | 2730 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 90% | 46,572 psi | 85% | 2651 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 48,588 psi | 88% | 2746 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 94% | 47,123 psi | 86% | 2661 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 86% | 48,718 psi | 88% | 2674 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,918 psi | 80% | 2635 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 47,036 psi | 85% | 2700 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 49,443 psi | 90% | 2772 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,867 psi | 63% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 49,748 psi | 90% | 2674 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 47,834 psi | 87% | 2651 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 48,776 psi | 89% | 2644 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,139 psi | 89% | 2621 fps | 97.4% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,298 psi | 89% | 2684 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 94% | 48,457 psi | 88% | 2644 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,209 psi | 84% | 2690 fps | 99.3% |
| IMR 4895 | <<locked>> | 88% | 47,398 psi | 86% | 2684 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 47,616 psi | 86% | 2618 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 47,123 psi | 86% | 2638 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 48,486 psi | 88% | 2595 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 48,385 psi | 88% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 47,355 psi | 86% | 2638 fps | 98.4% |
| Lovex S070 | <<locked>> | 98% | 47,747 psi | 87% | 2667 fps | 97.5% |
| Norma 201 | <<locked>> | 86% | 47,340 psi | 86% | 2615 fps | 100% |
| Norma 202 | <<locked>> | 86% | 47,514 psi | 86% | 2618 fps | 100% |
| Norma 203B | <<locked>> | 90% | 48,472 psi | 88% | 2690 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 48,211 psi | 87% | 2740 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 90% | 48,399 psi | 88% | 2713 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,616 psi | 86% | 2736 fps | 98.2% |
| Ramshot TAC | <<locked>> | 84% | 47,805 psi | 87% | 2635 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 47,021 psi | 85% | 2651 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 48,254 psi | 88% | 2615 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,172 psi | 64% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,413 psi | 86% | 2638 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 48,704 psi | 88% | 2759 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 48,269 psi | 88% | 2792 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,080 psi | 87% | 2766 fps | 99.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,095 psi | 89% | 2795 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 48,457 psi | 88% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 47,601 psi | 86% | 2608 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 48,486 psi | 88% | 2684 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 49,574 psi | 90% | 2661 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 96% | 47,355 psi | 86% | 2638 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 47,123 psi | 86% | 2638 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 48,385 psi | 88% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 47,747 psi | 87% | 2667 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 46,992 psi | 85% | 2697 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 48,878 psi | 89% | 2654 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 49,705 psi | 90% | 2684 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 49,168 psi | 89% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 48,791 psi | 89% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,456 psi | 86% | 2592 fps | 97.1% |
| Somchem S321 | <<locked>> | 82% | 48,196 psi | 87% | 2648 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 48,486 psi | 88% | 2559 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 48,341 psi | 88% | 2648 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 48,965 psi | 89% | 2684 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,076 psi | 78% | 2694 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 49,110 psi | 89% | 2523 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 49,269 psi | 89% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 49,705 psi | 90% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 47,834 psi | 87% | 2595 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 47,413 psi | 86% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 47,485 psi | 86% | 2684 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 47,616 psi | 86% | 2612 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 49,023 psi | 89% | 2638 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,748 psi | 90% | 2743 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,071 psi | 65% | 2579 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 48,269 psi | 88% | 2667 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 46,818 psi | 85% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 48,936 psi | 89% | 2749 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,284 psi | 55% | 2497 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 49,356 psi | 90% | 2694 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 43,598 psi | 79% | 2484 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,969 psi | 65% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,612 psi | 77% | 2556 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 44,034 psi | 80% | 2523 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 34,011 psi | 62% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 29,907 psi | 54% | 2388 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 39,958 psi | 73% | 2520 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 33,953 psi | 62% | 2379 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,974 psi | 76% | 2523 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 41,365 psi | 75% | 2510 fps | 100% |
| Alliant Power Pro 2000-MR | 42.3 gr | 80% | 36,027 psi | 65% | 2543 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,373 psi | 61% | 2405 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,824 psi | 65% | 2457 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 31,459 psi | 57% | 2405 fps | 95.7% |
| Alliant Reloder-17 | 41.7 gr | 80% | 28,819 psi | 52% | 2369 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 26,789 psi | 49% | 2313 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 32,416 psi | 59% | 2526 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,769 psi | 70% | 2516 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 32,489 psi | 59% | 2402 fps | 98.5% |
| Bofors RP7 | <<locked>> | 92% | 43,685 psi | 79% | 2562 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,976 psi | 80% | 2513 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,219 psi | 73% | 2546 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,164 psi | 80% | 2677 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 80% | 33,707 psi | 61% | 2405 fps | 96% |
| Hodgdon H414 | <<locked>> | 92% | 40,176 psi | 73% | 2592 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 92% | 44,295 psi | 80% | 2612 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 40,248 psi | 73% | 2530 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 26,832 psi | 49% | 2257 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,172 psi | 66% | 2503 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 94% | 43,033 psi | 78% | 2661 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 47% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,812 psi | 70% | 2487 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 39,537 psi | 72% | 2523 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,607 psi | 65% | 2405 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 40,799 psi | 74% | 2474 fps | 95.4% |
| IMR 4350 | <<locked>> | 96% | 43,511 psi | 79% | 2585 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 40,495 psi | 73% | 2503 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 29,443 psi | 53% | 2352 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 36,637 psi | 66% | 2487 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 41,974 psi | 76% | 2523 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,464 psi | 70% | 2497 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 40,451 psi | 73% | 2457 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 35,404 psi | 64% | 2411 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 35,099 psi | 64% | 2405 fps | 95.4% |
| Lovex S070 | <<locked>> | 92% | 39,798 psi | 72% | 2526 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 39,102 psi | 71% | 2474 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 39,392 psi | 71% | 2484 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,244 psi | 64% | 2448 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 30,922 psi | 56% | 2395 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 34,606 psi | 63% | 2457 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 36,941 psi | 67% | 2533 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 41,800 psi | 76% | 2526 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,959 psi | 74% | 2549 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,440 psi | 82% | 2569 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 47% | 1480 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 36,506 psi | 66% | 2434 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,999 psi | 67% | 2549 fps | 98.3% |
| ReloadSwiss RS 60 | 41.7 gr | 80% | 30,661 psi | 56% | 2434 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 32,271 psi | 59% | 2457 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 35,230 psi | 64% | 2520 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 42,989 psi | 78% | 2510 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,405 psi | 68% | 2431 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 30,748 psi | 56% | 2352 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 92% | 43,685 psi | 79% | 2562 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 35,099 psi | 64% | 2405 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,464 psi | 70% | 2497 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 35,404 psi | 64% | 2411 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 92% | 39,798 psi | 72% | 2526 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,763 psi | 58% | 2398 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,885 psi | 72% | 2500 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,493 psi | 70% | 2490 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,944 psi | 74% | 2428 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,721 psi | 61% | 2310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 38,798 psi | 70% | 2448 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 44,991 psi | 82% | 2598 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 40,234 psi | 73% | 2431 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,479 psi | 72% | 2500 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 31,662 psi | 57% | 2356 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 23,003 psi | 42% | 2198 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 46,383 psi | 84% | 2484 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,147 psi | 75% | 2425 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,521 psi | 66% | 2415 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,217 psi | 68% | 2421 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,139 psi | 55% | 2300 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 30,472 psi | 55% | 2346 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 41,800 psi | 76% | 2516 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 35,781 psi | 65% | 2418 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 31,676 psi | 57% | 2398 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 28,094 psi | 51% | 2382 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 26,977 psi | 49% | 2224 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,118 psi | 75% | 2562 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 40,176 psi | 73% | 2592 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 26,658 psi | 48% | 2372 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,753 psi | 69% | 2493 fps | 99.2% |
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 7.5 x 55 Swiss loaded with the .308 | 180gr | Swift Scirocco. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,795 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 (380 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for 7.5 x 55 Swiss with the .308 | 180gr | Swift Scirocco they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.