Load Specifications
Load data in caliber 7 mm WSM with .284 | 144gr | Peregrine VLR-5 bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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 2495 | <<locked>> | 82% | 54,404 psi | 85% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,057 psi | 88% | 2917 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2959 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 54,737 psi | 86% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,115 psi | 88% | 3015 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,318 psi | 88% | 3107 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 82% | 57,566 psi | 90% | 2982 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,448 psi | 87% | 2936 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,246 psi | 90% | 3061 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 3051 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,737 psi | 86% | 3061 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,086 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,275 psi | 88% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,072 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,694 psi | 86% | 3041 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,608 psi | 89% | 3048 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 3048 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,792 psi | 80% | 2976 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,947 psi | 69% | 2897 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,578 psi | 86% | 3120 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,240 psi | 77% | 2966 fps | 97.2% |
| Bofors RP3 | <<locked>> | 86% | 56,826 psi | 89% | 2972 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 3048 fps | 98.2% |
| Bofors RP7 | <<locked>> | 90% | 56,449 psi | 88% | 2963 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 57,566 psi | 90% | 2995 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 54,723 psi | 86% | 3012 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 54,592 psi | 86% | 2969 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 55,085 psi | 86% | 2995 fps | 96.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3038 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,203 psi | 90% | 2989 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,100 psi | 86% | 2976 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,960 psi | 67% | 2923 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 90% | 54,868 psi | 86% | 3045 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,201 psi | 57% | 1844 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,680 psi | 87% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,752 psi | 86% | 2917 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,595 psi | 90% | 2959 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 57,435 psi | 90% | 2995 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,766 psi | 86% | 2940 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 56,579 psi | 89% | 3005 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,172 psi | 85% | 2956 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,521 psi | 89% | 2982 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,344 psi | 82% | 3022 fps | 96.6% |
| Lovex S060 | <<locked>> | 82% | 56,449 psi | 88% | 2904 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,810 psi | 86% | 2910 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,665 psi | 86% | 2933 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 55,898 psi | 88% | 2976 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,396 psi | 70% | 2795 fps | 98.4% |
| Norma 201 | <<locked>> | 82% | 56,231 psi | 88% | 2920 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,855 psi | 89% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,564 psi | 87% | 2966 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,679 psi | 86% | 2992 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3133 fps | 99.6% |
| Norma URP | <<locked>> | 92% | 54,766 psi | 86% | 2995 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,594 psi | 89% | 2995 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,707 psi | 83% | 3038 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 57,435 psi | 90% | 3054 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,775 psi | 73% | 2900 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 58% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,421 psi | 90% | 2979 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,682 psi | 90% | 3054 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,056 psi | 85% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,956 psi | 88% | 3035 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,679 psi | 86% | 3068 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,091 psi | 68% | 2917 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 84% | 56,913 psi | 89% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,942 psi | 89% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,317 psi | 87% | 2972 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 55,738 psi | 87% | 3031 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 56,449 psi | 88% | 2963 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,665 psi | 86% | 2933 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 54,810 psi | 86% | 2910 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,898 psi | 88% | 2976 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,288 psi | 87% | 2982 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,231 psi | 88% | 2953 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,000 psi | 89% | 2848 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,650 psi | 86% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,302 psi | 85% | 2884 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,259 psi | 87% | 3028 fps | 98.4% |
| Somchem S335 | <<locked>> | 82% | 56,768 psi | 89% | 2848 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,956 psi | 89% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,261 psi | 90% | 2966 fps | 96.8% |
| Somchem S365 | <<locked>> | 94% | 54,012 psi | 85% | 2995 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,391 psi | 88% | 3005 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 82% | 57,566 psi | 90% | 2828 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,159 psi | 90% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,580 psi | 90% | 2894 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,752 psi | 86% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,116 psi | 90% | 2992 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,083 psi | 82% | 2923 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 84% | 55,738 psi | 87% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,115 psi | 88% | 2999 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3054 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3123 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,739 psi | 89% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,723 psi | 86% | 3012 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,716 psi | 72% | 3035 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,246 psi | 88% | 2959 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 3002 fps | 98.4% |
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% | 50,865 psi | 80% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,095 psi | 77% | 2802 fps | 97.8% |
| Accurate 3100 | <<locked>> | 88% | 35,230 psi | 55% | 2602 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 48,240 psi | 76% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,651 psi | 57% | 2651 fps | 98% |
| Accurate MAGPRO | <<locked>> | 98% | 52,344 psi | 82% | 3038 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 54,012 psi | 85% | 2927 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,963 psi | 72% | 2779 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 43,816 psi | 69% | 2815 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 96% | 47,979 psi | 75% | 2927 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,879 psi | 80% | 2999 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,412 psi | 73% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,487 psi | 78% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,926 psi | 56% | 2667 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,973 psi | 64% | 2802 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,337 psi | 68% | 2805 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,857 psi | 64% | 2795 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,136 psi | 41% | 2405 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,837 psi | 53% | 2648 fps | 95.9% |
| Alliant Reloder-26 | 59 gr | 84% | 32,126 psi | 50% | 2644 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 43,076 psi | 68% | 2844 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 46,528 psi | 73% | 2808 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,857 psi | 64% | 2795 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 40,843 psi | 64% | 2674 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 46,847 psi | 73% | 2818 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 38,943 psi | 61% | 2707 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 41,930 psi | 66% | 2733 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 96% | 51,488 psi | 81% | 2936 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,401 psi | 79% | 2917 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,446 psi | 52% | 2559 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,372 psi | 81% | 2920 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,234 psi | 63% | 2854 fps | 95.1% |
| Hodgdon Superformance | 58 gr | 80% | 37,898 psi | 59% | 2713 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 42% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,214 psi | 82% | 2884 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,327 psi | 76% | 2812 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,517 psi | 79% | 2841 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,117 psi | 61% | 2657 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,511 psi | 67% | 2713 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 35,404 psi | 55% | 2608 fps | 97.7% |
| IMR 4895 | <<locked>> | 80% | 50,763 psi | 80% | 2900 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,777 psi | 78% | 2867 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 48,936 psi | 77% | 2956 fps | 95.7% |
| Lovex S060 | <<locked>> | 80% | 52,982 psi | 83% | 2851 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,399 psi | 76% | 2805 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,871 psi | 62% | 2657 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 37,942 psi | 59% | 2631 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 34,113 psi | 53% | 2575 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,721 psi | 83% | 2871 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,548 psi | 84% | 2867 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,805 psi | 76% | 2858 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,527 psi | 70% | 2808 fps | 95.7% |
| Norma MRP | <<locked>> | 88% | 37,275 psi | 58% | 2743 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 36,593 psi | 57% | 2651 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 49,255 psi | 77% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,571 psi | 71% | 2900 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 35,563 psi | 56% | 2635 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 40,408 psi | 63% | 2772 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,572 psi | 43% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,021 psi | 74% | 2805 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,679 psi | 84% | 2995 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,584 psi | 68% | 2858 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,564 psi | 57% | 2674 fps | 97.7% |
| ReloadSwiss RS 70 | 55.7 gr | 80% | 35,592 psi | 56% | 2677 fps | 97% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,130 psi | 58% | 2769 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 50,038 psi | 78% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,627 psi | 68% | 2753 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 48,559 psi | 76% | 2854 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 90% | 42,482 psi | 67% | 2792 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 40,843 psi | 64% | 2674 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,871 psi | 62% | 2657 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 48,399 psi | 76% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,942 psi | 59% | 2631 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,049 psi | 71% | 2808 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,533 psi | 82% | 2897 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,650 psi | 84% | 2802 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,310 psi | 71% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,914 psi | 61% | 2598 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,090 psi | 66% | 2785 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 53,316 psi | 84% | 2799 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,179 psi | 69% | 2756 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,966 psi | 78% | 2844 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 33,040 psi | 52% | 2602 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 40,350 psi | 63% | 2713 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 54,259 psi | 85% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,546 psi | 79% | 2785 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,618 psi | 79% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,032 psi | 66% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,072 psi | 60% | 2654 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 39,798 psi | 62% | 2694 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 48,863 psi | 77% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,420 psi | 59% | 2651 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 28,703 psi | 45% | 2484 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 50,082 psi | 78% | 2995 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,347 psi | 59% | 2625 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 38,943 psi | 61% | 2707 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,223 psi | 41% | 2493 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,750 psi | 83% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,569 psi | 67% | 2756 fps | 95.4% |
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 105 powders for 7 mm WSM loaded with the .284 | 144gr | Peregrine VLR-5. Norma MRP delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,133 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 144.0 gr projectile in 0.284" calls for a 1:9.5 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. ReloadSwiss RS 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for 7 mm WSM with the .284 | 144gr | Peregrine VLR-5 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.