Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 132gr | Peregrine VLR-4 bullet and 90 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 Alliant Reloder-16.
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% | 56,028 psi | 88% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,114 psi | 85% | 3025 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3127 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,594 psi | 89% | 3061 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,433 psi | 85% | 3123 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,855 psi | 89% | 3100 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,666 psi | 87% | 3173 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 3228 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,695 psi | 89% | 3232 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,840 psi | 88% | 3166 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,215 psi | 85% | 3068 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,462 psi | 85% | 3091 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,463 psi | 87% | 3186 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,826 psi | 89% | 3209 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,071 psi | 86% | 3156 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3222 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,127 psi | 83% | 3140 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,006 psi | 72% | 3061 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,580 psi | 90% | 3294 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 3130 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 55,071 psi | 86% | 3087 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3222 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 54,418 psi | 85% | 3068 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 55,347 psi | 87% | 3100 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 56,884 psi | 89% | 3182 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 56,260 psi | 88% | 3136 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 57,435 psi | 90% | 3169 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,072 psi | 88% | 3143 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,637 psi | 87% | 3104 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,898 psi | 89% | 3140 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,063 psi | 71% | 3091 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 57,450 psi | 90% | 3222 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1965 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,392 psi | 90% | 3107 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,246 psi | 88% | 3084 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,492 psi | 87% | 3064 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 55,709 psi | 87% | 3104 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,362 psi | 88% | 3104 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 54,998 psi | 86% | 3117 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,927 psi | 88% | 3123 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,984 psi | 86% | 3091 fps | 96.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3192 fps | 96.8% |
| Lovex S062 | <<locked>> | 84% | 56,550 psi | 89% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,188 psi | 88% | 3094 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 54,346 psi | 85% | 3084 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,586 psi | 73% | 2959 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 57,696 psi | 90% | 3087 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,290 psi | 90% | 3133 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,913 psi | 89% | 3166 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 56,014 psi | 88% | 3248 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 56,913 psi | 89% | 3166 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,563 psi | 86% | 3100 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,158 psi | 86% | 3212 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 92% | 55,869 psi | 88% | 3166 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,255 psi | 77% | 3074 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,028 psi | 58% | 2011 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,506 psi | 87% | 3087 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,260 psi | 88% | 3202 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,578 psi | 86% | 3146 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,869 psi | 89% | 3238 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,252 psi | 71% | 3087 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 54,955 psi | 86% | 3038 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,216 psi | 87% | 3084 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,276 psi | 90% | 3140 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 96% | 54,360 psi | 85% | 3143 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 54,418 psi | 85% | 3068 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,188 psi | 88% | 3094 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 56,550 psi | 89% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,346 psi | 85% | 3084 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,101 psi | 89% | 3146 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,130 psi | 88% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,014 psi | 88% | 3045 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,595 psi | 90% | 3199 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 55,071 psi | 86% | 3077 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,506 psi | 87% | 3071 fps | 96.1% |
| Somchem S365 | <<locked>> | 94% | 56,594 psi | 89% | 3166 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,723 psi | 86% | 3110 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 55,419 psi | 87% | 2995 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,564 psi | 87% | 3005 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,521 psi | 89% | 3051 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,390 psi | 87% | 3104 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 3087 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 57,348 psi | 90% | 3051 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,462 psi | 85% | 3107 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 55,303 psi | 87% | 3169 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,202 psi | 88% | 3235 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,100 psi | 86% | 3064 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,884 psi | 89% | 3182 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,834 psi | 77% | 3205 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,013 psi | 86% | 3107 fps | 97.9% |
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% | 52,431 psi | 82% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,589 psi | 79% | 2963 fps | 97.8% |
| Accurate 3100 | <<locked>> | 88% | 36,869 psi | 58% | 2753 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 49,763 psi | 78% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,029 psi | 60% | 2802 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 47,065 psi | 74% | 2930 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 45,484 psi | 71% | 2976 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 49,690 psi | 78% | 3087 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,779 psi | 83% | 3166 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 45,730 psi | 72% | 2976 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,703 psi | 75% | 2959 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,908 psi | 80% | 3031 fps | 100% |
| Alliant Reloder-16 | 56.2 gr | 80% | 37,115 psi | 58% | 2818 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,569 psi | 67% | 2956 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,208 psi | 71% | 2966 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,598 psi | 67% | 2953 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,064 psi | 42% | 2536 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,201 psi | 55% | 2795 fps | 95.9% |
| Alliant Reloder-26 | 65.2 gr | 84% | 33,721 psi | 53% | 2795 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 44,875 psi | 70% | 2999 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,109 psi | 75% | 2969 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,598 psi | 67% | 2953 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,177 psi | 66% | 2828 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 48,443 psi | 76% | 2982 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 40,190 psi | 63% | 2854 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 43,279 psi | 68% | 2887 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 96% | 53,476 psi | 84% | 3100 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,214 psi | 82% | 3077 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,751 psi | 54% | 2703 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,127 psi | 83% | 3084 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 42,047 psi | 66% | 3018 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 39,305 psi | 62% | 2864 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 43% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,882 psi | 84% | 3051 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,501 psi | 78% | 2969 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,909 psi | 81% | 3005 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 40,480 psi | 63% | 2808 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,758 psi | 69% | 2867 fps | 96.9% |
| IMR 4831 | <<locked>> | 80% | 36,695 psi | 57% | 2753 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 52,243 psi | 82% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,648 psi | 81% | 3031 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 50,778 psi | 80% | 3123 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 49,821 psi | 78% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,031 psi | 64% | 2805 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 39,204 psi | 61% | 2779 fps | 95.8% |
| Lovex S071 | <<locked>> | 92% | 35,621 psi | 56% | 2720 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 54,143 psi | 85% | 3031 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,227 psi | 79% | 3015 fps | 100% |
| Norma 204 | <<locked>> | 86% | 46,137 psi | 72% | 2969 fps | 95.7% |
| Norma MRP | 66.3 gr | 88% | 39,073 psi | 61% | 2900 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 37,971 psi | 60% | 2802 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,995 psi | 80% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 47,500 psi | 74% | 3068 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,869 psi | 58% | 2782 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 96% | 42,177 psi | 66% | 2927 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,528 psi | 43% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,559 psi | 76% | 2966 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,252 psi | 71% | 3018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,087 psi | 60% | 2822 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,941 psi | 58% | 2828 fps | 97% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 39,073 psi | 61% | 2930 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,561 psi | 81% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,136 psi | 71% | 2907 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 50,357 psi | 79% | 3018 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 90% | 44,280 psi | 69% | 2949 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,177 psi | 66% | 2828 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,031 psi | 64% | 2805 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 49,821 psi | 78% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,204 psi | 61% | 2779 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,557 psi | 73% | 2966 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,456 psi | 73% | 2818 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,219 psi | 63% | 2746 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,874 psi | 69% | 2943 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 45,484 psi | 71% | 2910 fps | 99.9% |
| Somchem S361 | <<locked>> | 92% | 51,706 psi | 81% | 3005 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 34,389 psi | 54% | 2749 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 41,872 psi | 66% | 2864 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 51,895 psi | 81% | 2943 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,141 psi | 82% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,424 psi | 68% | 2831 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,349 psi | 62% | 2802 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 92% | 41,365 psi | 65% | 2844 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,473 psi | 79% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,885 psi | 61% | 2799 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 29,892 psi | 47% | 2618 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 96% | 52,359 psi | 82% | 3166 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,580 psi | 60% | 2769 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 40,393 psi | 63% | 2861 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,325 psi | 43% | 2631 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,425 psi | 70% | 2913 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 90 powders for 7 mm Weath. Mag. loaded with the .284 | 132gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 3,294 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,294 fps. Accurate 3100 gives the best case fill at 100 %, and 90 of the 90 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 132.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Alliant Reloder-16 rank at the top here: for 7 mm Weath. Mag. with the .284 | 132gr | Peregrine VLR-4 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.