Load Specifications
Load data in caliber .30-06 Spring. with .308 | 180gr | Norma VULKAN 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 51,024 psi | 87% | 2526 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,881 psi | 90% | 2592 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,924 psi | 90% | 2641 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,924 psi | 90% | 2641 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 53,127 psi | 90% | 2592 fps | 96.6% |
| Accurate 4064 | <<locked>> | 90% | 52,823 psi | 90% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 52,011 psi | 89% | 2703 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 50,183 psi | 85% | 2615 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 90% | 51,140 psi | 87% | 2615 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 52,475 psi | 89% | 2618 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,953 psi | 90% | 2595 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,649 psi | 90% | 2769 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,053 psi | 87% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 51,329 psi | 87% | 2654 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 50,415 psi | 86% | 2710 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 94% | 51,300 psi | 87% | 2746 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,218 psi | 65% | 2510 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,496 psi | 72% | 2654 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,881 psi | 90% | 2674 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 51,126 psi | 87% | 2648 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 51,721 psi | 88% | 2618 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 50,937 psi | 87% | 2556 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 51,547 psi | 88% | 2644 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,156 psi | 90% | 2733 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 52,431 psi | 89% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 52,272 psi | 89% | 2657 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 53,026 psi | 90% | 2723 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 96% | 50,691 psi | 86% | 2638 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 84% | 50,647 psi | 86% | 2625 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,734 psi | 85% | 2644 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,142 psi | 90% | 2703 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 52,069 psi | 89% | 2730 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,520 psi | 60% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 50,720 psi | 86% | 2612 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 52,301 psi | 89% | 2638 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 52,997 psi | 90% | 2635 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 52,620 psi | 90% | 2608 fps | 97.4% |
| IMR 4350 | <<locked>> | 98% | 51,619 psi | 88% | 2641 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,357 psi | 86% | 2602 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,021 psi | 80% | 2612 fps | 98.9% |
| IMR 4895 | <<locked>> | 88% | 52,634 psi | 90% | 2680 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 52,475 psi | 89% | 2618 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,924 psi | 90% | 2641 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,084 psi | 90% | 2595 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 50,459 psi | 86% | 2598 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 52,765 psi | 90% | 2641 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 50,314 psi | 86% | 2625 fps | 97.2% |
| Norma 201 | <<locked>> | 86% | 51,996 psi | 89% | 2608 fps | 100% |
| Norma 202 | <<locked>> | 86% | 52,591 psi | 90% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 88% | 50,546 psi | 86% | 2641 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 51,314 psi | 87% | 2694 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 50,879 psi | 87% | 2664 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 98% | 50,401 psi | 86% | 2690 fps | 98% |
| Ramshot TAC | <<locked>> | 84% | 52,504 psi | 89% | 2631 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,953 psi | 88% | 2648 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 61% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 52,504 psi | 89% | 2638 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 51,503 psi | 88% | 2713 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 51,082 psi | 87% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 51,706 psi | 88% | 2726 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 51,764 psi | 88% | 2753 fps | 99% |
| Rottweil R 901 | <<locked>> | 82% | 50,154 psi | 85% | 2552 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 52,765 psi | 90% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 51,256 psi | 87% | 2641 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 51,721 psi | 88% | 2618 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,765 psi | 90% | 2641 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,924 psi | 90% | 2641 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 50,459 psi | 86% | 2598 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 50,314 psi | 86% | 2625 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,707 psi | 90% | 2697 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,024 psi | 87% | 2612 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 51,706 psi | 88% | 2635 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 50,589 psi | 86% | 2513 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 50,589 psi | 86% | 2513 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,011 psi | 90% | 2595 fps | 97.4% |
| Somchem S335 | <<locked>> | 86% | 52,924 psi | 90% | 2552 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 50,473 psi | 86% | 2602 fps | 99.7% |
| Somchem S355 | <<locked>> | 92% | 51,692 psi | 88% | 2641 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,284 psi | 84% | 2700 fps | 100% |
| Unknown powder | <<locked>> | 96% | 52,504 psi | 89% | 2703 fps | 99% |
| Vihtavuori N130 | <<locked>> | 82% | 52,518 psi | 89% | 2510 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 50,430 psi | 86% | 2500 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 52,170 psi | 89% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,388 psi | 89% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 52,823 psi | 90% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 52,924 psi | 90% | 2677 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 51,982 psi | 88% | 2621 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 52,054 psi | 89% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 49,864 psi | 85% | 2671 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,814 psi | 71% | 2585 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 50,879 psi | 87% | 2628 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,113 psi | 90% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,026 psi | 90% | 2723 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,171 psi | 58% | 2503 fps | 98.2% |
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 2015 | <<locked>> | 80% | 47,906 psi | 82% | 2484 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,611 psi | 69% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,151 psi | 79% | 2543 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,151 psi | 79% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 46,557 psi | 79% | 2487 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 38,421 psi | 65% | 2408 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,389 psi | 59% | 2388 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 44,164 psi | 75% | 2513 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,652 psi | 64% | 2375 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,238 psi | 79% | 2523 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 46,441 psi | 79% | 2507 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,161 psi | 68% | 2543 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,260 psi | 63% | 2398 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,914 psi | 68% | 2454 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,780 psi | 59% | 2402 fps | 95.8% |
| Alliant Reloder-17 | 47.7 gr | 80% | 31,995 psi | 54% | 2362 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,994 psi | 51% | 2310 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,086 psi | 63% | 2536 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,410 psi | 74% | 2520 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 36,767 psi | 63% | 2398 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 45,513 psi | 77% | 2516 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,964 psi | 82% | 2510 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,092 psi | 77% | 2546 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,632 psi | 84% | 2677 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 49,182 psi | 84% | 2556 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,623 psi | 64% | 2402 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 88% | 43,221 psi | 74% | 2559 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 94% | 47,688 psi | 81% | 2589 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,570 psi | 76% | 2526 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,965 psi | 51% | 2254 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,174 psi | 65% | 2454 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 92% | 45,194 psi | 77% | 2612 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 45% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,610 psi | 67% | 2421 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 40,451 psi | 69% | 2457 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,883 psi | 63% | 2352 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 86% | 43,961 psi | 75% | 2461 fps | 95.4% |
| IMR 4350 | <<locked>> | 94% | 45,745 psi | 78% | 2543 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,469 psi | 76% | 2500 fps | 95.5% |
| IMR 4831 | <<locked>> | 90% | 34,229 psi | 58% | 2369 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 40,872 psi | 70% | 2484 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 46,238 psi | 79% | 2523 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 43,294 psi | 74% | 2497 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,324 psi | 75% | 2457 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 39,436 psi | 67% | 2411 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 38,812 psi | 66% | 2402 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 41,698 psi | 71% | 2474 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,265 psi | 74% | 2470 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 43,656 psi | 74% | 2480 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,276 psi | 67% | 2444 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 34,853 psi | 59% | 2392 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,798 psi | 66% | 2454 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 41,307 psi | 70% | 2530 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 46,209 psi | 79% | 2530 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,585 psi | 78% | 2546 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,643 psi | 45% | 1486 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,596 psi | 69% | 2434 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,916 psi | 71% | 2552 fps | 98.4% |
| ReloadSwiss RS 60 | 47.7 gr | 80% | 34,069 psi | 58% | 2425 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,113 psi | 58% | 2402 fps | 95.1% |
| ReloadSwiss RS 70 | 53.3 gr | 88% | 36,840 psi | 63% | 2464 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 47,195 psi | 80% | 2507 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,292 psi | 70% | 2428 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,577 psi | 59% | 2346 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 45,513 psi | 77% | 2516 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,812 psi | 66% | 2402 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,294 psi | 74% | 2497 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,436 psi | 67% | 2411 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 41,698 psi | 71% | 2474 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,534 psi | 60% | 2392 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,353 psi | 76% | 2503 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,685 psi | 73% | 2487 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,599 psi | 76% | 2425 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,072 psi | 63% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,627 psi | 74% | 2448 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 44,237 psi | 75% | 2428 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,179 psi | 75% | 2503 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 35,418 psi | 60% | 2352 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 25,788 psi | 44% | 2192 fps | 95.2% |
| Unknown powder | <<locked>> | 84% | 35,592 psi | 61% | 2395 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 49,342 psi | 84% | 2467 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,018 psi | 72% | 2375 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,553 psi | 69% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,698 psi | 69% | 2411 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,197 psi | 51% | 2215 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 84% | 35,650 psi | 61% | 2375 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 48,559 psi | 83% | 2569 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,350 psi | 69% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,998 psi | 61% | 2415 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 92% | 32,126 psi | 55% | 2379 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,965 psi | 51% | 2221 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 49,632 psi | 84% | 2618 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,221 psi | 74% | 2559 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,139 psi | 51% | 2382 fps | 96% |
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 113 powders for .30-06 Spring. loaded with the .308 | 180gr | Norma VULKAN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,769 fps; across all powders the maximum-charge window runs from 1,627 fps to 2,769 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" 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. Alliant Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .30-06 Spring. with the .308 | 180gr | Norma VULKAN 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.