Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 128gr | IBEX TRD bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and Accurate High Country.
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 2700 | <<locked>> | 82% | 56,971 psi | 89% | 3104 fps | 98.6% |
| Accurate 3100 | <<locked>> | 98% | 57,087 psi | 89% | 3163 fps | 99.6% |
| Accurate 4064 | <<locked>> | 82% | 57,725 psi | 90% | 3104 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,868 psi | 86% | 3156 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 53,940 psi | 85% | 3241 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 56,347 psi | 88% | 3127 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,201 psi | 87% | 3192 fps | 97.8% |
| ADI AR 2213 | <<locked>> | 98% | 56,608 psi | 89% | 3248 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,653 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,667 psi | 90% | 3176 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,027 psi | 86% | 3215 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,217 psi | 88% | 3232 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,650 psi | 86% | 3179 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,202 psi | 88% | 3248 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3228 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 3156 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,493 psi | 90% | 3327 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 3222 fps | 97.8% |
| Bofors RP3 | <<locked>> | 82% | 55,405 psi | 87% | 3117 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 56,202 psi | 88% | 3248 fps | 98.1% |
| Bofors RP7 | <<locked>> | 88% | 57,667 psi | 90% | 3153 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 82% | 55,259 psi | 87% | 3130 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 56,318 psi | 88% | 3202 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 86% | 55,550 psi | 87% | 3156 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 96% | 56,594 psi | 89% | 3186 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,564 psi | 87% | 3166 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,666 psi | 87% | 3133 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,312 psi | 76% | 3192 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 88% | 56,782 psi | 89% | 3238 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 58% | 2008 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,680 psi | 87% | 3104 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,216 psi | 87% | 3127 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,564 psi | 87% | 3120 fps | 98.9% |
| IMR 4831 | <<locked>> | 90% | 55,172 psi | 86% | 3146 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,578 psi | 86% | 3114 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 98% | 54,172 psi | 85% | 3215 fps | 96.4% |
| Lovex S062 | <<locked>> | 82% | 56,492 psi | 89% | 3104 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,202 psi | 88% | 3123 fps | 99.7% |
| Lovex S070 | <<locked>> | 88% | 54,346 psi | 85% | 3114 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,792 psi | 80% | 3061 fps | 99% |
| Norma 203B | <<locked>> | 82% | 57,014 psi | 89% | 3159 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,999 psi | 88% | 3179 fps | 97.7% |
| Norma MRP | <<locked>> | 96% | 55,941 psi | 88% | 3274 fps | 99.1% |
| Norma URP | <<locked>> | 90% | 56,710 psi | 89% | 3196 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,723 psi | 86% | 3235 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 90% | 55,317 psi | 87% | 3186 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,939 psi | 83% | 3166 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 59% | 2054 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,897 psi | 86% | 3107 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,593 psi | 87% | 3225 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,491 psi | 85% | 3176 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,318 psi | 88% | 3261 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,791 psi | 76% | 3192 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 84% | 55,506 psi | 87% | 3114 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,826 psi | 89% | 3159 fps | 97% |
| Rottweil R 905 | <<locked>> | 94% | 54,128 psi | 85% | 3166 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 88% | 57,667 psi | 90% | 3153 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,202 psi | 88% | 3123 fps | 99.7% |
| Shooters World Precision | <<locked>> | 82% | 56,492 psi | 89% | 3104 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,346 psi | 85% | 3114 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,550 psi | 89% | 3169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,463 psi | 87% | 2986 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,883 psi | 88% | 3071 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,319 psi | 90% | 3222 fps | 98.3% |
| Somchem S355 | <<locked>> | 84% | 55,129 psi | 86% | 3107 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,056 psi | 86% | 3091 fps | 95.8% |
| Somchem S365 | <<locked>> | 92% | 56,536 psi | 89% | 3199 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,042 psi | 86% | 3143 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 86% | 56,434 psi | 88% | 3081 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,969 psi | 86% | 3127 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 3173 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 56,971 psi | 89% | 3077 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,288 psi | 85% | 3133 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 96% | 56,057 psi | 88% | 3209 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,898 psi | 88% | 3261 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,317 psi | 85% | 3084 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,579 psi | 89% | 3209 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,968 psi | 83% | 3307 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,723 psi | 86% | 3133 fps | 97.7% |
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 2700 | <<locked>> | 80% | 53,519 psi | 84% | 3041 fps | 98.1% |
| Accurate 3100 | <<locked>> | 84% | 36,129 psi | 57% | 2749 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 54,375 psi | 85% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,090 psi | 66% | 2913 fps | 98.7% |
| Accurate High Country | 70.6 gr | 92% | 50,415 psi | 79% | 3173 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 49,850 psi | 78% | 3012 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 45,556 psi | 71% | 3005 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 94% | 49,603 psi | 78% | 3114 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,024 psi | 80% | 3045 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,143 psi | 85% | 3117 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,074 psi | 63% | 2913 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,745 psi | 72% | 3048 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 45,237 psi | 71% | 2992 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 46,151 psi | 72% | 3054 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,298 psi | 47% | 2657 fps | 96.8% |
| Alliant Reloder-25 | <<locked>> | 88% | 34,113 psi | 53% | 2782 fps | 95% |
| Alliant Reloder-26 | 63.2 gr | 80% | 32,489 psi | 51% | 2776 fps | 95.2% |
| Bofors RP15 | <<locked>> | 94% | 45,498 psi | 71% | 3038 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 51,982 psi | 81% | 3064 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 46,151 psi | 72% | 3054 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 45,150 psi | 71% | 2917 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 51,822 psi | 81% | 3071 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 43,540 psi | 68% | 2956 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 46,122 psi | 72% | 2972 fps | 96% |
| Hodgdon H4831 | <<locked>> | 94% | 52,910 psi | 83% | 3117 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,996 psi | 81% | 3104 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,855 psi | 59% | 2799 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 96% | 42,714 psi | 67% | 3054 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 42,453 psi | 67% | 2963 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,601 psi | 43% | 1795 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,446 psi | 82% | 3051 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,654 psi | 64% | 2835 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,267 psi | 73% | 2943 fps | 97.3% |
| IMR 4831 | <<locked>> | 80% | 40,219 psi | 63% | 2858 fps | 98.4% |
| IMR 4955 Enduron | <<locked>> | 92% | 51,242 psi | 80% | 3051 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 96% | 50,691 psi | 79% | 3150 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 53,040 psi | 83% | 3048 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,353 psi | 70% | 2900 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 42,627 psi | 67% | 2881 fps | 96.7% |
| Lovex S071 | <<locked>> | 88% | 35,215 psi | 55% | 2726 fps | 95% |
| Norma 203B | <<locked>> | 80% | 53,534 psi | 84% | 3104 fps | 100% |
| Norma 204 | <<locked>> | 84% | 46,064 psi | 72% | 2992 fps | 95.5% |
| Norma MRP | 66 gr | 86% | 39,769 psi | 62% | 2940 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 41,263 psi | 65% | 2900 fps | 98.4% |
| Ramshot Grand | <<locked>> | 96% | 51,068 psi | 80% | 3166 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 40,118 psi | 63% | 2884 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 94% | 42,830 psi | 67% | 2963 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 44% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,561 psi | 81% | 3048 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,399 psi | 76% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,582 psi | 65% | 2927 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,074 psi | 63% | 2930 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 39,813 psi | 62% | 2969 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 48,965 psi | 77% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 50,125 psi | 79% | 3041 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 44,570 psi | 70% | 2979 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,150 psi | 71% | 2917 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,353 psi | 70% | 2900 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 53,040 psi | 83% | 3048 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,627 psi | 67% | 2881 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,835 psi | 78% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,153 psi | 77% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,468 psi | 68% | 2838 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 44,164 psi | 69% | 2972 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,979 psi | 77% | 2999 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,517 psi | 81% | 3028 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 37,927 psi | 59% | 2854 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 42,598 psi | 67% | 2900 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 46,731 psi | 73% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,540 psi | 67% | 2894 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 41,916 psi | 66% | 2877 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 53,548 psi | 84% | 3025 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,192 psi | 66% | 2897 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 33,765 psi | 53% | 2746 fps | 96.9% |
| Vihtavuori N560 | <<locked>> | 94% | 52,112 psi | 82% | 3189 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,582 psi | 65% | 2858 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 43,540 psi | 68% | 2956 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,122 psi | 43% | 2635 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,701 psi | 70% | 2940 fps | 95.2% |
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 79 powders for 7 mm Weath. Mag. loaded with the .284 | 128gr | IBEX TRD. Alliant Reloder-26 delivers the highest muzzle velocity at 3,327 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,327 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 79 of the 79 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 128.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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, Alliant Reloder-26, Accurate High Country rank at the top here: for 7 mm Weath. Mag. with the .284 | 128gr | IBEX TRD 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.