Load Specifications
Load data in caliber .30-06 Ackley Improved with .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Ramshot Big Game.
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>> | 88% | 54,636 psi | 88% | 2854 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,185 psi | 85% | 2877 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,869 psi | 90% | 2917 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 52,721 psi | 85% | 2917 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 52,721 psi | 85% | 2917 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 55,361 psi | 89% | 2956 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,645 psi | 76% | 2900 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 82% | 54,288 psi | 87% | 2802 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,679 psi | 88% | 2825 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,650 psi | 86% | 2936 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 96% | 54,694 psi | 88% | 2933 fps | 98.8% |
| ADI AR 2219 | <<locked>> | 82% | 54,897 psi | 88% | 2920 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,318 psi | 90% | 2946 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 56,362 psi | 90% | 2933 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,389 psi | 87% | 3005 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 53,026 psi | 85% | 3041 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,925 psi | 86% | 2956 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,360 psi | 87% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,911 psi | 88% | 2976 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,978 psi | 75% | 2904 fps | 97.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,534 psi | 87% | 3068 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,403 psi | 86% | 2795 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,301 psi | 85% | 2946 fps | 98.4% |
| Bofors RP3 | <<locked>> | 96% | 54,273 psi | 87% | 2969 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,172 psi | 88% | 2887 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,216 psi | 89% | 2976 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,374 psi | 86% | 3015 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 88% | 56,144 psi | 90% | 2936 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,157 psi | 87% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,796 psi | 89% | 2979 fps | 98.2% |
| Hodgdon H4198 | <<locked>> | 82% | 55,941 psi | 90% | 2848 fps | 100% |
| Hodgdon H4895 | <<locked>> | 90% | 54,099 psi | 87% | 2949 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,323 psi | 69% | 2789 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 56,202 psi | 90% | 3031 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,664 psi | 56% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,404 psi | 87% | 2936 fps | 99.5% |
| IMR 3031 | <<locked>> | 94% | 55,201 psi | 89% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,376 psi | 90% | 2953 fps | 99.2% |
| IMR 4198 | <<locked>> | 84% | 54,665 psi | 88% | 2825 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 56,333 psi | 90% | 3012 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 90% | 56,318 psi | 90% | 2946 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 53,040 psi | 85% | 2884 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 92% | 56,376 psi | 90% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,882 psi | 86% | 2871 fps | 99.2% |
| Lovex S062 | <<locked>> | 94% | 53,722 psi | 86% | 2920 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,721 psi | 85% | 2897 fps | 96.8% |
| Norma 201 | <<locked>> | 92% | 55,767 psi | 89% | 2936 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 56,231 psi | 90% | 2946 fps | 100% |
| Norma 203B | <<locked>> | 94% | 54,056 psi | 87% | 2966 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 47,268 psi | 76% | 2890 fps | 97% |
| Ramshot Big Game | <<locked>> | 94% | 54,273 psi | 87% | 2986 fps | 99.2% |
| Ramshot TAC | <<locked>> | 88% | 53,505 psi | 86% | 2904 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 90% | 56,144 psi | 90% | 2982 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,317 psi | 87% | 2897 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,027 psi | 56% | 1831 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,202 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 53,113 psi | 85% | 2904 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,636 psi | 88% | 3041 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,491 psi | 87% | 3077 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2920 fps | 96.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,370 psi | 78% | 2936 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 88% | 53,664 psi | 86% | 2881 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,202 psi | 90% | 2936 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 54,114 psi | 87% | 2956 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,721 psi | 85% | 2897 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,376 psi | 90% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,722 psi | 86% | 2920 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,970 psi | 90% | 2904 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,216 psi | 89% | 2930 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 56,173 psi | 90% | 3025 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,317 psi | 89% | 2884 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,274 psi | 89% | 2936 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,419 psi | 89% | 2959 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,346 psi | 87% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,273 psi | 87% | 2835 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 54,128 psi | 87% | 2933 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 53,679 psi | 86% | 2835 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,520 psi | 87% | 2927 fps | 99.2% |
| Somchem S355 | <<locked>> | 98% | 54,505 psi | 87% | 2953 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,076 psi | 67% | 2835 fps | 98.9% |
| Unknown powderᴾ | <<locked>> | 100% | 52,098 psi | 84% | 2963 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 86% | 54,244 psi | 87% | 2808 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,317 psi | 87% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,434 psi | 89% | 2907 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,287 psi | 85% | 2874 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,275 psi | 90% | 2940 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,009 psi | 80% | 2897 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 88% | 53,432 psi | 86% | 2897 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 94% | 55,100 psi | 88% | 2920 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,863 psi | 78% | 2897 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,097 psi | 82% | 2884 fps | 99.3% |
| Winchester 748 | <<locked>> | 86% | 53,447 psi | 86% | 2953 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,185 psi | 85% | 2940 fps | 99.5% |
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% | 42,583 psi | 68% | 2664 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,441 psi | 74% | 2769 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 35,085 psi | 56% | 2566 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,089 psi | 64% | 2697 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 40,089 psi | 64% | 2697 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 33,141 psi | 53% | 2546 fps | 98.6% |
| Accurate 4350 | <<locked>> | 96% | 41,220 psi | 66% | 2779 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 50,879 psi | 82% | 2749 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,271 psi | 82% | 2772 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,247 psi | 63% | 2664 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 37,869 psi | 61% | 2615 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 51,343 psi | 82% | 2867 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,278 psi | 66% | 2684 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 80% | 40,263 psi | 65% | 2690 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,819 psi | 77% | 2890 fps | 98.8% |
| Alliant Power Pro 2000-MR | 52.4 gr | 84% | 40,379 psi | 65% | 2785 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,474 psi | 52% | 2523 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,138 psi | 77% | 2769 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 37,347 psi | 60% | 2641 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,771 psi | 67% | 2792 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,637 psi | 59% | 2703 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,966 psi | 80% | 2743 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,785 psi | 65% | 2713 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 31,865 psi | 51% | 2523 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,105 psi | 69% | 2680 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,349 psi | 63% | 2694 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,250 psi | 69% | 2828 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 80% | 43,598 psi | 70% | 2736 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,488 psi | 81% | 2861 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 43,004 psi | 69% | 2753 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 52,707 psi | 85% | 2799 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 39,566 psi | 63% | 2680 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,853 psi | 57% | 2625 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,388 psi | 54% | 2582 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,817 psi | 41% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,114 psi | 56% | 2559 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 35,215 psi | 56% | 2615 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 36,985 psi | 59% | 2589 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 48,617 psi | 78% | 2733 fps | 100% |
| IMR 4895 | <<locked>> | 80% | 35,969 psi | 58% | 2621 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 41,278 psi | 66% | 2684 fps | 98.1% |
| Lovex D073.5 | <<locked>> | 80% | 46,296 psi | 74% | 2772 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 37,652 psi | 60% | 2644 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 39,842 psi | 64% | 2612 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 34,708 psi | 56% | 2549 fps | 96.5% |
| Lovex S065 | <<locked>> | 96% | 46,615 psi | 75% | 2792 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 38,319 psi | 61% | 2621 fps | 97.5% |
| Norma 202 | <<locked>> | 80% | 38,479 psi | 62% | 2638 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 36,680 psi | 59% | 2631 fps | 95.6% |
| Norma URP | <<locked>> | 96% | 41,597 psi | 67% | 2779 fps | 95.5% |
| Ramshot Big Game | 51.2 gr | 82% | 36,347 psi | 58% | 2641 fps | 95.1% |
| Ramshot TAC | <<locked>> | 84% | 46,775 psi | 75% | 2785 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,292 psi | 65% | 2697 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,556 psi | 71% | 2730 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,034 psi | 42% | 1637 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,267 psi | 74% | 2776 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,545 psi | 79% | 2841 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 38,740 psi | 62% | 2740 fps | 95.5% |
| ReloadSwiss RS 60 | 49.1 gr | 80% | 29,907 psi | 48% | 2526 fps | 95.3% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 41,205 psi | 66% | 2795 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 45,078 psi | 72% | 2871 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 42,134 psi | 68% | 2680 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 36,564 psi | 59% | 2572 fps | 97% |
| Rottweil R 903 | <<locked>> | 84% | 34,214 psi | 55% | 2575 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 46,615 psi | 75% | 2792 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,652 psi | 60% | 2644 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 34,708 psi | 56% | 2549 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,834 psi | 78% | 2792 fps | 99.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,822 psi | 83% | 2877 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 37,768 psi | 61% | 2680 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,849 psi | 78% | 2789 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 44,889 psi | 72% | 2759 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,724 psi | 60% | 2628 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,972 psi | 64% | 2592 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,909 psi | 53% | 2451 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 44,208 psi | 71% | 2759 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 39,450 psi | 63% | 2595 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 38,725 psi | 62% | 2641 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 35,172 psi | 56% | 2582 fps | 95.6% |
| Somchem S365 | <<locked>> | 92% | 32,692 psi | 52% | 2608 fps | 96% |
| Unknown powder | <<locked>> | 94% | 42,946 psi | 69% | 2792 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 45,324 psi | 73% | 2674 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,089 psi | 64% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,447 psi | 57% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,260 psi | 58% | 2569 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 82% | 31,372 psi | 50% | 2467 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 94% | 41,176 psi | 66% | 2733 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 41,176 psi | 66% | 2677 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 35,027 psi | 56% | 2556 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 42,859 psi | 69% | 2782 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 34,447 psi | 55% | 2546 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 43,308 psi | 69% | 2779 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,180 psi | 74% | 2818 fps | 98.6% |
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 93 powders for .30-06 Ackley Improved loaded with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,077 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,077 fps. Accurate 4350 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 Power Pro 2000-MR, ReloadSwiss RS 60, Ramshot Big Game rank at the top here: for .30-06 Ackley Improved with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC 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.