Load Specifications
Load data in caliber .30 R Blaser with .308 | 176gr | Peregrine Glider GRM 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-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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 2015 | <<locked>> | 82% | 50,488 psi | 86% | 2539 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 51,677 psi | 88% | 2595 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,359 psi | 89% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 52,779 psi | 90% | 2602 fps | 96.6% |
| Accurate 4064 | <<locked>> | 90% | 51,982 psi | 88% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 51,866 psi | 88% | 2717 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 52,982 psi | 90% | 2677 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 50,923 psi | 87% | 2628 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 51,982 psi | 88% | 2628 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,547 psi | 89% | 2608 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,576 psi | 90% | 2782 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 50,386 psi | 86% | 2644 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 50,937 psi | 87% | 2664 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 50,256 psi | 86% | 2723 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 94% | 51,010 psi | 87% | 2756 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,913 psi | 65% | 2520 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,351 psi | 72% | 2664 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,765 psi | 90% | 2690 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 50,792 psi | 86% | 2657 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 51,184 psi | 87% | 2628 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 50,546 psi | 86% | 2569 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 51,097 psi | 87% | 2654 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,895 psi | 90% | 2746 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 51,808 psi | 88% | 2615 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 51,735 psi | 88% | 2667 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 53,040 psi | 90% | 2736 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 84% | 50,082 psi | 85% | 2635 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,501 psi | 84% | 2654 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,721 psi | 90% | 2713 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 52,141 psi | 89% | 2746 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,172 psi | 60% | 1644 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 50,560 psi | 86% | 2628 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 51,822 psi | 88% | 2651 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 52,721 psi | 90% | 2648 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 52,344 psi | 89% | 2621 fps | 97.4% |
| IMR 4350 | <<locked>> | 98% | 51,387 psi | 87% | 2651 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,024 psi | 85% | 2612 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,383 psi | 79% | 2618 fps | 98.8% |
| IMR 4895 | <<locked>> | 88% | 52,243 psi | 89% | 2694 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 51,982 psi | 88% | 2628 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,359 psi | 89% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,649 psi | 90% | 2608 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 49,777 psi | 85% | 2608 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 52,446 psi | 89% | 2654 fps | 98.6% |
| Lovex S070 | <<locked>> | 98% | 53,098 psi | 90% | 2680 fps | 97.8% |
| Norma 201 | <<locked>> | 86% | 51,576 psi | 88% | 2625 fps | 100% |
| Norma 202 | <<locked>> | 86% | 52,315 psi | 89% | 2628 fps | 100% |
| Norma 203B | <<locked>> | 88% | 50,154 psi | 85% | 2651 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 51,024 psi | 87% | 2703 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 50,676 psi | 86% | 2674 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 98% | 50,024 psi | 85% | 2700 fps | 97.9% |
| Ramshot TAC | <<locked>> | 84% | 52,141 psi | 89% | 2641 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,895 psi | 88% | 2664 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,953 psi | 90% | 2631 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,636 psi | 61% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 52,301 psi | 89% | 2651 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 51,198 psi | 87% | 2723 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 50,879 psi | 87% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 51,590 psi | 88% | 2736 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 51,605 psi | 88% | 2762 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 84% | 52,518 psi | 89% | 2608 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 52,054 psi | 89% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 50,662 psi | 86% | 2651 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 51,184 psi | 87% | 2628 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,446 psi | 89% | 2654 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,359 psi | 89% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 49,777 psi | 85% | 2608 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 53,098 psi | 90% | 2680 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,518 psi | 89% | 2710 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 50,502 psi | 86% | 2621 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 51,372 psi | 87% | 2648 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,142 psi | 90% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 50,096 psi | 85% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,707 psi | 90% | 2608 fps | 97.4% |
| Somchem S321 | <<locked>> | 82% | 53,084 psi | 90% | 2661 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,634 psi | 90% | 2569 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 50,125 psi | 85% | 2615 fps | 99.7% |
| Somchem S355 | <<locked>> | 92% | 51,169 psi | 87% | 2651 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,921 psi | 83% | 2707 fps | 100% |
| Unknown powder | <<locked>> | 96% | 52,301 psi | 89% | 2717 fps | 99% |
| Vihtavuori N130 | <<locked>> | 82% | 51,895 psi | 88% | 2523 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 52,982 psi | 90% | 2552 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 51,590 psi | 88% | 2589 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 51,851 psi | 88% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 52,373 psi | 89% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 52,721 psi | 90% | 2687 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 51,532 psi | 88% | 2635 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 51,634 psi | 88% | 2625 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,026 psi | 90% | 2733 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,278 psi | 70% | 2589 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 50,473 psi | 86% | 2635 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,823 psi | 90% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,040 psi | 90% | 2736 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,707 psi | 57% | 2507 fps | 98.1% |
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 2015 | <<locked>> | 80% | 47,123 psi | 80% | 2493 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,595 psi | 67% | 2418 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,353 psi | 77% | 2549 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 46,267 psi | 79% | 2500 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 37,449 psi | 64% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,765 psi | 57% | 2392 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 43,656 psi | 74% | 2526 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,028 psi | 63% | 2382 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,803 psi | 78% | 2536 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,050 psi | 78% | 2523 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,595 psi | 67% | 2549 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,506 psi | 62% | 2402 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,363 psi | 67% | 2461 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,389 psi | 59% | 2408 fps | 95.6% |
| Alliant Reloder-17 | 48.9 gr | 80% | 31,546 psi | 54% | 2365 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,399 psi | 50% | 2310 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,637 psi | 62% | 2539 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,873 psi | 73% | 2526 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 35,998 psi | 61% | 2402 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 45,049 psi | 77% | 2526 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,616 psi | 81% | 2523 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,425 psi | 76% | 2549 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,385 psi | 84% | 2690 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 48,631 psi | 83% | 2569 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,970 psi | 63% | 2405 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 88% | 42,989 psi | 73% | 2569 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 44,077 psi | 75% | 2536 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,356 psi | 50% | 2257 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,666 psi | 64% | 2461 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 92% | 45,005 psi | 77% | 2625 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,150 psi | 45% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,233 psi | 67% | 2431 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 39,813 psi | 68% | 2467 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,303 psi | 62% | 2362 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 43,482 psi | 74% | 2470 fps | 95.3% |
| IMR 4350 | <<locked>> | 94% | 45,295 psi | 77% | 2552 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,164 psi | 75% | 2513 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 33,663 psi | 57% | 2372 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 40,335 psi | 69% | 2490 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 45,803 psi | 78% | 2536 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 42,583 psi | 72% | 2503 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,758 psi | 74% | 2467 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 38,624 psi | 66% | 2418 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 38,305 psi | 65% | 2408 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 43,990 psi | 75% | 2536 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 42,656 psi | 73% | 2480 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 42,931 psi | 73% | 2487 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,711 psi | 66% | 2451 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 34,243 psi | 58% | 2395 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 38,247 psi | 65% | 2461 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 40,959 psi | 70% | 2539 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 45,629 psi | 78% | 2536 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,252 psi | 77% | 2559 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,400 psi | 84% | 2579 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,440 psi | 45% | 1506 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,205 psi | 68% | 2444 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,394 psi | 70% | 2559 fps | 98.3% |
| ReloadSwiss RS 60 | 48.9 gr | 80% | 33,649 psi | 57% | 2431 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,143 psi | 62% | 2464 fps | 95.9% |
| ReloadSwiss RS 70 | 54.6 gr | 88% | 36,477 psi | 62% | 2470 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 46,224 psi | 79% | 2516 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,437 psi | 69% | 2434 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 33,837 psi | 58% | 2349 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 45,049 psi | 77% | 2526 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,305 psi | 65% | 2408 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,583 psi | 72% | 2503 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,624 psi | 66% | 2418 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 43,990 psi | 75% | 2536 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,998 psi | 60% | 2398 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,888 psi | 75% | 2513 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,192 psi | 72% | 2497 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,990 psi | 75% | 2434 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,477 psi | 62% | 2310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,076 psi | 73% | 2454 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 49,414 psi | 84% | 2605 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,714 psi | 74% | 2438 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,627 psi | 74% | 2510 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 34,809 psi | 59% | 2359 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 26,760 psi | 46% | 2241 fps | 95.7% |
| Unknown powder | <<locked>> | 86% | 37,521 psi | 64% | 2454 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 48,805 psi | 83% | 2480 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,524 psi | 71% | 2388 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,856 psi | 68% | 2415 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,219 psi | 68% | 2421 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,472 psi | 50% | 2218 fps | 97.2% |
| Vihtavuori N160 | <<locked>> | 84% | 34,983 psi | 60% | 2375 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 48,124 psi | 82% | 2582 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,784 psi | 68% | 2438 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,476 psi | 60% | 2418 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 92% | 31,415 psi | 53% | 2379 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,327 psi | 50% | 2221 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 49,081 psi | 84% | 2628 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 42,989 psi | 73% | 2569 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,515 psi | 50% | 2379 fps | 95.7% |
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 114 powders for .30 R Blaser loaded with the .308 | 176gr | Peregrine Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,782 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 176.0 gr projectile in 0.308" calls for a 1:10.0 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. Alliant Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .30 R Blaser with the .308 | 176gr | Peregrine Glider GRM they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.