Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.30-06 R Stief load data
Case Length (l3):2.49"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:69 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:58,740 psi
Recommended Twist Rate:1:13.5
Load data in caliber .30-06 R Stief with .308 | 180gr | Sierra SPT Pro-Hunter bullet and 94 powders. The key underlying parameters are shown in the table above.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 50,546 psi | 86% | 2516 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,040 psi | 89% | 2579 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 50,270 psi | 86% | 2592 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,445 psi | 88% | 2569 fps | 96.2% |
| Accurate 4064 | <<locked>> | 90% | 52,054 psi | 89% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 51,387 psi | 87% | 2694 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 52,881 psi | 90% | 2654 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 50,531 psi | 86% | 2602 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 51,808 psi | 88% | 2605 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,446 psi | 89% | 2585 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,040 psi | 89% | 2756 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 50,415 psi | 86% | 2628 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 50,937 psi | 87% | 2641 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,084 psi | 90% | 2749 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 50,401 psi | 86% | 2730 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,768 psi | 64% | 2497 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,887 psi | 71% | 2641 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,272 psi | 89% | 2661 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 50,749 psi | 86% | 2638 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 51,155 psi | 87% | 2605 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 50,502 psi | 86% | 2546 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 50,865 psi | 87% | 2631 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,736 psi | 90% | 2723 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 90% | 51,634 psi | 88% | 2648 fps | 99% |
| Hodgdon H414 | <<locked>> | 96% | 50,966 psi | 87% | 2687 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 94% | 51,866 psi | 88% | 2654 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 84% | 49,966 psi | 85% | 2612 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,182 psi | 84% | 2631 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 52,460 psi | 89% | 2690 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 51,343 psi | 87% | 2717 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 60% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 51,169 psi | 87% | 2615 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 53,026 psi | 90% | 2644 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 49,966 psi | 85% | 2585 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,053 psi | 85% | 2562 fps | 96.8% |
| IMR 4350 | <<locked>> | 98% | 51,140 psi | 87% | 2628 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 52,910 psi | 90% | 2635 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,156 psi | 89% | 2687 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 52,228 psi | 89% | 2671 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 51,808 psi | 88% | 2605 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,156 psi | 89% | 2628 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,417 psi | 89% | 2582 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 52,895 psi | 90% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 52,214 psi | 89% | 2631 fps | 98.4% |
| Lovex S070 | <<locked>> | 98% | 52,924 psi | 90% | 2661 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 51,619 psi | 88% | 2602 fps | 100% |
| Norma 202 | <<locked>> | 86% | 52,127 psi | 89% | 2605 fps | 100% |
| Norma 203B | <<locked>> | 88% | 50,154 psi | 85% | 2631 fps | 99.7% |
| Norma URP | <<locked>> | 98% | 50,676 psi | 86% | 2684 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 88% | 50,270 psi | 86% | 2651 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,098 psi | 90% | 2730 fps | 98.4% |
| Ramshot TAC | <<locked>> | 84% | 51,967 psi | 88% | 2618 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,605 psi | 88% | 2638 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,620 psi | 90% | 2605 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 61% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 51,938 psi | 88% | 2628 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 50,807 psi | 86% | 2697 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 50,502 psi | 86% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 50,865 psi | 87% | 2710 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 51,010 psi | 87% | 2736 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 84% | 52,808 psi | 90% | 2589 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 52,098 psi | 89% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 50,560 psi | 86% | 2631 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 51,155 psi | 87% | 2605 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,214 psi | 89% | 2631 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,156 psi | 89% | 2628 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 52,895 psi | 90% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 52,924 psi | 90% | 2661 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,040 psi | 89% | 2684 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 50,415 psi | 86% | 2598 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 51,053 psi | 87% | 2621 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,127 psi | 90% | 2546 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 50,212 psi | 85% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,446 psi | 89% | 2585 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 52,823 psi | 90% | 2635 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,533 psi | 89% | 2546 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 49,850 psi | 85% | 2589 fps | 99.7% |
| Somchem S355 | <<locked>> | 92% | 51,010 psi | 87% | 2628 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,443 psi | 82% | 2684 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 53,011 psi | 90% | 2513 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 50,401 psi | 86% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 51,721 psi | 88% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,373 psi | 89% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 52,359 psi | 89% | 2612 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 49,951 psi | 85% | 2631 fps | 99% |
| Vihtavuori N530 | <<locked>> | 84% | 52,098 psi | 89% | 2602 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 50,836 psi | 87% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 52,214 psi | 89% | 2684 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,988 psi | 70% | 2569 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 50,183 psi | 85% | 2615 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 51,808 psi | 88% | 2648 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 50,966 psi | 87% | 2687 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,852 psi | 58% | 2490 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 86% | 50,894 psi | 87% | 2631 fps | 99.9% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,398 psi | 81% | 2474 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,132 psi | 68% | 2405 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,963 psi | 80% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,414 psi | 82% | 2523 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 37,956 psi | 65% | 2398 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,011 psi | 58% | 2379 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,758 psi | 74% | 2507 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 37,275 psi | 63% | 2365 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,788 psi | 78% | 2513 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 45,876 psi | 78% | 2497 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,566 psi | 67% | 2526 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,622 psi | 62% | 2382 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,479 psi | 67% | 2444 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,447 psi | 59% | 2388 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,676 psi | 54% | 2349 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,617 psi | 50% | 2297 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,477 psi | 62% | 2520 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,786 psi | 73% | 2503 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 36,361 psi | 62% | 2388 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 45,208 psi | 77% | 2507 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,529 psi | 81% | 2500 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,411 psi | 76% | 2530 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,936 psi | 83% | 2664 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 80% | 37,260 psi | 63% | 2388 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 92% | 44,672 psi | 76% | 2585 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 92% | 48,747 psi | 83% | 2602 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,135 psi | 75% | 2516 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,660 psi | 50% | 2244 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,045 psi | 68% | 2487 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 94% | 47,964 psi | 82% | 2657 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,426 psi | 45% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,235 psi | 72% | 2467 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 43,729 psi | 74% | 2510 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,102 psi | 67% | 2395 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,338 psi | 75% | 2464 fps | 95.4% |
| IMR 4350 | <<locked>> | 94% | 45,223 psi | 77% | 2530 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,135 psi | 75% | 2490 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 32,851 psi | 56% | 2336 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 40,437 psi | 69% | 2470 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 45,788 psi | 78% | 2513 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 42,583 psi | 72% | 2484 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,918 psi | 75% | 2448 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,015 psi | 66% | 2402 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 38,450 psi | 65% | 2388 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 43,990 psi | 75% | 2516 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 42,815 psi | 73% | 2461 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 42,946 psi | 73% | 2467 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,856 psi | 66% | 2431 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 34,316 psi | 58% | 2379 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 38,247 psi | 65% | 2441 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 40,785 psi | 69% | 2516 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 45,658 psi | 78% | 2516 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,194 psi | 77% | 2536 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,313 psi | 84% | 2556 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 45% | 1480 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,277 psi | 69% | 2425 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,191 psi | 70% | 2536 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,736 psi | 57% | 2415 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,013 psi | 61% | 2441 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,914 psi | 66% | 2507 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 46,688 psi | 79% | 2497 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,857 psi | 70% | 2418 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,156 psi | 58% | 2336 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 45,208 psi | 77% | 2507 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,450 psi | 65% | 2388 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,583 psi | 72% | 2484 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,015 psi | 66% | 2402 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 43,990 psi | 75% | 2516 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,983 psi | 60% | 2379 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,990 psi | 75% | 2493 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,076 psi | 72% | 2474 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,121 psi | 75% | 2415 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,651 psi | 62% | 2290 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,062 psi | 73% | 2434 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 49,400 psi | 84% | 2585 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,830 psi | 75% | 2418 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,613 psi | 74% | 2490 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,027 psi | 60% | 2339 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,137 psi | 46% | 2231 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 49,821 psi | 85% | 2470 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,425 psi | 76% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,089 psi | 68% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,814 psi | 69% | 2408 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,301 psi | 57% | 2283 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 33,649 psi | 57% | 2329 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 45,905 psi | 78% | 2510 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,349 psi | 67% | 2398 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 35,346 psi | 60% | 2382 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 31,618 psi | 54% | 2365 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,588 psi | 50% | 2208 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 45,440 psi | 77% | 2552 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 44,672 psi | 76% | 2585 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,646 psi | 50% | 2362 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,553 psi | 71% | 2477 fps | 99.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 94 powders for .30-06 R Stief loaded with the .308 | 180gr | Sierra SPT Pro-Hunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,756 fps. Alliant Reloder-16 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 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.