Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 55,347 psi | 87% | 3035 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 57,014 psi | 89% | 3081 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,027 psi | 85% | 3120 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 82% | 54,752 psi | 86% | 2992 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,085 psi | 85% | 3071 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 96% | 55,434 psi | 87% | 3130 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,176 psi | 65% | 2894 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,941 psi | 88% | 3015 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,653 psi | 90% | 3136 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,027 psi | 86% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,087 psi | 89% | 3117 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,158 psi | 86% | 3123 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,072 psi | 88% | 3100 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,880 psi | 81% | 3097 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,753 psi | 89% | 3196 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,085 psi | 85% | 3104 fps | 98.5% |
| Bofors RP3 | <<locked>> | 82% | 56,898 psi | 89% | 3028 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 3018 fps | 96.7% |
| Bofors RP5 | <<locked>> | 96% | 55,158 psi | 86% | 3123 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 56,043 psi | 88% | 3025 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,995 psi | 80% | 3038 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 82% | 57,072 psi | 89% | 3051 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,926 psi | 86% | 3074 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 84% | 54,317 psi | 85% | 3031 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 94% | 55,564 psi | 87% | 3068 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,331 psi | 85% | 3048 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,447 psi | 85% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,778 psi | 80% | 3153 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 55,317 psi | 87% | 3107 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 58% | 1929 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,638 psi | 90% | 3025 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,493 psi | 90% | 3061 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,493 psi | 90% | 3051 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 57,188 psi | 90% | 3068 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,768 psi | 89% | 3054 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 56,797 psi | 89% | 3166 fps | 98.1% |
| Lovex S065 | <<locked>> | 86% | 54,607 psi | 86% | 2992 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 55,970 psi | 88% | 3038 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,895 psi | 83% | 2995 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 54,795 psi | 86% | 3058 fps | 98.4% |
| Norma MRP | <<locked>> | 94% | 55,013 psi | 86% | 3150 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 55,216 psi | 87% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,606 psi | 84% | 3117 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 88% | 54,172 psi | 85% | 3061 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,854 psi | 88% | 3117 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 59% | 1975 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,681 psi | 89% | 3035 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,607 psi | 86% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,956 psi | 89% | 3100 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,114 psi | 86% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 3150 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 57,261 psi | 90% | 3031 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,463 psi | 87% | 3041 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 56,579 psi | 89% | 3107 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 56,043 psi | 88% | 3025 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,607 psi | 86% | 2992 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 55,970 psi | 88% | 3038 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,114 psi | 86% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,305 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,493 psi | 90% | 2999 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,130 psi | 88% | 3100 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 56,869 psi | 89% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,087 psi | 89% | 3031 fps | 97.3% |
| Somchem S365 | <<locked>> | 90% | 55,506 psi | 87% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,232 psi | 90% | 3081 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 54,650 psi | 86% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,334 psi | 90% | 3054 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,637 psi | 89% | 3054 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 56,449 psi | 88% | 3061 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,998 psi | 86% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,955 psi | 86% | 3140 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 3110 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,029 psi | 89% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,114 psi | 86% | 3077 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3241 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,421 psi | 90% | 3077 fps | 98.9% |
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 3100 | <<locked>> | 82% | 34,432 psi | 54% | 2618 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 43,294 psi | 68% | 2841 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 50,270 psi | 79% | 3051 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 51,358 psi | 80% | 2933 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,321 psi | 65% | 2818 fps | 95.3% |
| ADI AR 2213 | 67.9 gr | 90% | 45,266 psi | 71% | 2933 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 36,158 psi | 57% | 2759 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,489 psi | 82% | 2959 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,408 psi | 65% | 2844 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,790 psi | 75% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,365 psi | 65% | 2815 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 42,134 psi | 66% | 2871 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,850 psi | 48% | 2589 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,779 psi | 51% | 2661 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,518 psi | 53% | 2720 fps | 97% |
| Bofors RP15 | <<locked>> | 90% | 41,611 psi | 65% | 2858 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 53,272 psi | 83% | 2976 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 44,614 psi | 70% | 2949 fps | 95.8% |
| Bofors RP5 | <<locked>> | 88% | 42,134 psi | 66% | 2871 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 46,369 psi | 73% | 2851 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 44,483 psi | 70% | 2907 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 53,447 psi | 84% | 2992 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,889 psi | 70% | 2887 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 47,558 psi | 75% | 2907 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 48,370 psi | 76% | 2940 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,471 psi | 74% | 2920 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,044 psi | 61% | 2726 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,957 psi | 61% | 2874 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 44,367 psi | 70% | 2907 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 43% | 1726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,027 psi | 85% | 2969 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,916 psi | 66% | 2772 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,747 psi | 75% | 2877 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 41,263 psi | 65% | 2782 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,905 psi | 74% | 2874 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 46,311 psi | 73% | 2966 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 45,281 psi | 71% | 2825 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 43,497 psi | 68% | 2808 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 33,663 psi | 53% | 2598 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 41,626 psi | 65% | 2802 fps | 95.3% |
| Norma MRP | 63.8 gr | 82% | 35,839 psi | 56% | 2746 fps | 95% |
| Norma URP | <<locked>> | 80% | 42,482 psi | 67% | 2828 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 46,325 psi | 73% | 2976 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 41,350 psi | 65% | 2815 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 38,595 psi | 60% | 2779 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,166 psi | 44% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,214 psi | 83% | 2976 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,691 psi | 79% | 3028 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,062 psi | 67% | 2854 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,481 psi | 65% | 2867 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,926 psi | 56% | 2785 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 50,169 psi | 79% | 2920 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,774 psi | 72% | 2861 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 84% | 40,553 psi | 64% | 2795 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 46,369 psi | 73% | 2851 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,281 psi | 71% | 2825 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 43,497 psi | 68% | 2808 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,488 psi | 81% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,488 psi | 79% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,280 psi | 69% | 2769 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,190 psi | 63% | 2789 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 50,198 psi | 79% | 2917 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,891 psi | 73% | 2851 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 39,421 psi | 62% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,464 psi | 60% | 2717 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,935 psi | 75% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,005 psi | 69% | 2828 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 38,116 psi | 60% | 2700 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 43,468 psi | 68% | 2825 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 34,490 psi | 54% | 2671 fps | 98.1% |
| Vihtavuori N560 | 70.1 gr | 90% | 47,834 psi | 75% | 3005 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 96% | 47,587 psi | 75% | 2982 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,033 psi | 67% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,121 psi | 71% | 2890 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,340 psi | 43% | 2575 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,408 psi | 63% | 2759 fps | 95.1% |
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 83 powders for 7 mm Weath. Mag. loaded with the .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC. Winchester StaBALL HD delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,241 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for 7 mm Weath. Mag. with the .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, Vihtavuori N170 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.