Load Specifications
Load data in caliber 7 mm WSM with .283 | 140gr | Frontier PH HPBT bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Winchester 760.
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 2495 | <<locked>> | 82% | 55,883 psi | 88% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,130 psi | 90% | 2972 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,288 psi | 87% | 3015 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,333 psi | 88% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,508 psi | 90% | 3071 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,624 psi | 90% | 3163 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 86% | 56,304 psi | 88% | 2989 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,607 psi | 86% | 3054 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,912 psi | 88% | 3107 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,825 psi | 87% | 3117 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,621 psi | 86% | 3048 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,072 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,276 psi | 90% | 3031 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,418 psi | 85% | 3071 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,738 psi | 87% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,638 psi | 90% | 3100 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 3100 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 3028 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,005 psi | 71% | 2949 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,028 psi | 88% | 3182 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 3022 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 54,389 psi | 85% | 2972 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 3100 fps | 98.3% |
| Bofors RP7 | <<locked>> | 90% | 57,305 psi | 90% | 3015 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,969 psi | 86% | 2995 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,767 psi | 87% | 3064 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,303 psi | 87% | 3018 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 98% | 56,072 psi | 88% | 3048 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,955 psi | 86% | 3028 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,795 psi | 86% | 2992 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,970 psi | 88% | 3025 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,251 psi | 69% | 2986 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 55,970 psi | 88% | 3100 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 57% | 1880 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,594 psi | 89% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,724 psi | 87% | 2969 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,679 psi | 86% | 2949 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 54,824 psi | 86% | 2992 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,521 psi | 87% | 2986 fps | 99.1% |
| IMR 4831 | <<locked>> | 94% | 57,696 psi | 90% | 3058 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,230 psi | 87% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,566 psi | 90% | 3035 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,345 psi | 84% | 3074 fps | 96.6% |
| Lovex S060 | <<locked>> | 82% | 57,101 psi | 89% | 2953 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,912 psi | 88% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,593 psi | 87% | 2982 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,058 psi | 89% | 3028 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,948 psi | 72% | 2858 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 57,188 psi | 90% | 2972 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,565 psi | 89% | 3018 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,825 psi | 87% | 3048 fps | 98% |
| Norma MRP | <<locked>> | 98% | 54,534 psi | 85% | 3127 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 55,883 psi | 88% | 3051 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,696 psi | 90% | 3048 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,737 psi | 84% | 3091 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 92% | 54,795 psi | 86% | 3051 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,066 psi | 75% | 2959 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,188 psi | 58% | 1926 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,795 psi | 86% | 2976 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,129 psi | 86% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,276 psi | 90% | 3091 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,796 psi | 87% | 3123 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,280 psi | 69% | 2976 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 82% | 54,389 psi | 85% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,505 psi | 85% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,188 psi | 88% | 3022 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 56,913 psi | 89% | 3087 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 57,305 psi | 90% | 3015 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,593 psi | 87% | 2982 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,912 psi | 88% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,058 psi | 89% | 3028 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,101 psi | 88% | 3031 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,101 psi | 89% | 3005 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,608 psi | 87% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,419 psi | 87% | 2936 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,420 psi | 88% | 3081 fps | 98.4% |
| Somchem S335 | <<locked>> | 82% | 57,580 psi | 90% | 2897 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,491 psi | 85% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,491 psi | 85% | 2956 fps | 96% |
| Somchem S365 | <<locked>> | 94% | 55,419 psi | 87% | 3054 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,609 psi | 90% | 3061 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 54,766 psi | 86% | 2881 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,042 psi | 86% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,956 psi | 88% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,317 psi | 85% | 2989 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2972 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 56,884 psi | 89% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,159 psi | 90% | 3051 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,433 psi | 85% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,839 psi | 86% | 3117 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,012 psi | 85% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,999 psi | 88% | 3068 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,079 psi | 74% | 3097 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,421 psi | 90% | 3012 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,041 psi | 85% | 2995 fps | 97.8% |
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 2495 | <<locked>> | 80% | 52,417 psi | 82% | 2848 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,053 psi | 78% | 2854 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 34,330 psi | 54% | 2608 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 49,632 psi | 78% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,029 psi | 60% | 2717 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 98% | 53,650 psi | 84% | 3097 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 46,731 psi | 73% | 2828 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,817 psi | 70% | 2871 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 48,805 psi | 76% | 2976 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,764 psi | 81% | 3048 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 44,889 psi | 70% | 2867 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,311 psi | 74% | 2854 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,575 psi | 79% | 2927 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,956 psi | 58% | 2723 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,945 psi | 66% | 2854 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,367 psi | 70% | 2861 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,901 psi | 66% | 2854 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,093 psi | 42% | 2461 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,764 psi | 51% | 2644 fps | 95% |
| Alliant Reloder-26 | 58.7 gr | 82% | 31,082 psi | 49% | 2638 fps | 95.2% |
| Bofors RP15 | <<locked>> | 96% | 44,048 psi | 69% | 2897 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 47,877 psi | 75% | 2867 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,901 psi | 66% | 2854 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 41,959 psi | 66% | 2730 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,993 psi | 75% | 2874 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,972 psi | 63% | 2762 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,902 psi | 67% | 2785 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 52,272 psi | 82% | 2982 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,256 psi | 80% | 2966 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,403 psi | 54% | 2612 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,330 psi | 82% | 2972 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,336 psi | 65% | 2910 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,928 psi | 61% | 2769 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,325 psi | 43% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,156 psi | 83% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,153 psi | 77% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,430 psi | 81% | 2894 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 40,059 psi | 63% | 2710 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,250 psi | 68% | 2759 fps | 96.9% |
| IMR 4831 | <<locked>> | 80% | 36,434 psi | 57% | 2664 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 51,895 psi | 81% | 2956 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,894 psi | 80% | 2923 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 49,705 psi | 78% | 3009 fps | 95.7% |
| Lovex S060 | <<locked>> | 80% | 53,693 psi | 84% | 2900 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,371 psi | 77% | 2858 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,843 psi | 64% | 2710 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 39,131 psi | 61% | 2687 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 35,404 psi | 55% | 2635 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 53,766 psi | 84% | 2920 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,937 psi | 78% | 2910 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,382 psi | 71% | 2861 fps | 95.8% |
| Norma MRP | 61.2 gr | 88% | 38,580 psi | 60% | 2805 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 37,739 psi | 59% | 2707 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 50,212 psi | 79% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,673 psi | 73% | 2956 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,564 psi | 57% | 2690 fps | 96% |
| Ramshot Magnum | <<locked>> | 96% | 41,510 psi | 65% | 2828 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 43% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,008 psi | 75% | 2858 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,599 psi | 70% | 2913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,710 psi | 59% | 2730 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,506 psi | 57% | 2733 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,377 psi | 60% | 2831 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,329 psi | 80% | 2874 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,962 psi | 70% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 49,516 psi | 78% | 2907 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 90% | 43,613 psi | 68% | 2844 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 41,959 psi | 66% | 2730 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,843 psi | 64% | 2710 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 49,371 psi | 77% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,131 psi | 61% | 2687 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,035 psi | 72% | 2864 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,490 psi | 84% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,166 psi | 72% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,030 psi | 63% | 2651 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,207 psi | 68% | 2841 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 54,215 psi | 85% | 2848 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,179 psi | 71% | 2808 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,053 psi | 80% | 2897 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 34,229 psi | 54% | 2664 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,798 psi | 61% | 2710 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 51,605 psi | 81% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,706 psi | 81% | 2848 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,163 psi | 68% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,175 psi | 61% | 2707 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,828 psi | 64% | 2746 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,922 psi | 78% | 2841 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,537 psi | 60% | 2707 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 29,863 psi | 47% | 2543 fps | 96% |
| Vihtavuori N560 | <<locked>> | 96% | 51,140 psi | 80% | 3048 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,232 psi | 60% | 2674 fps | 99.6% |
| Winchester 760 | 54.7 gr | 80% | 39,972 psi | 63% | 2762 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,614 psi | 40% | 2490 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,693 psi | 84% | 2959 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,787 psi | 69% | 2812 fps | 95.5% |
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 95 powders for 7 mm WSM loaded with the .283 | 140gr | Frontier PH HPBT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,880 fps to 3,182 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.283" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-26, Norma MRP, Winchester 760 rank at the top here: for 7 mm WSM with the .283 | 140gr | Frontier PH HPBT 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.