Load Specifications
Bullet:.284 | 139gr | Hornady GMX
Bullet Manufacturer:Hornady
Bullet Weight:139 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm Rem. Mag. load data
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:82 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:10.5
Load data in caliber 7 mm Rem. Mag. with .284 | 139gr | Hornady GMX bullet and 91 powders. The key underlying parameters are shown in the table above.
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% | 55,085 psi | 88% | 2900 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,040 psi | 85% | 2920 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,926 psi | 88% | 3018 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 55,550 psi | 89% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,243 psi | 85% | 3018 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 52,504 psi | 84% | 3104 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 86% | 56,072 psi | 90% | 2999 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,476 psi | 87% | 3061 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,767 psi | 89% | 3114 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,782 psi | 89% | 3127 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,694 psi | 88% | 3058 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,694 psi | 88% | 3058 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,301 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,505 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,273 psi | 87% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,724 psi | 89% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,954 psi | 87% | 3051 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 3107 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,692 psi | 83% | 3035 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,802 psi | 72% | 2953 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,014 psi | 90% | 3186 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 3025 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 54,070 psi | 87% | 2979 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 3107 fps | 98.2% |
| Bofors RP7 | <<locked>> | 88% | 53,635 psi | 86% | 2966 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 54,433 psi | 87% | 2999 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,651 psi | 89% | 3071 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 55,405 psi | 89% | 3035 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 98% | 56,057 psi | 90% | 3058 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,940 psi | 88% | 3038 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,505 psi | 87% | 2999 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,927 psi | 90% | 3038 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,961 psi | 70% | 2982 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 90% | 56,202 psi | 90% | 3110 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 58% | 1893 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,434 psi | 90% | 3002 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,521 psi | 89% | 2982 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,694 psi | 88% | 2963 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 54,810 psi | 88% | 3002 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,405 psi | 89% | 2995 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 53,722 psi | 86% | 3009 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,911 psi | 88% | 3018 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,911 psi | 86% | 2986 fps | 96.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,214 psi | 85% | 3084 fps | 96.6% |
| Lovex S062 | <<locked>> | 84% | 55,550 psi | 89% | 2969 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,245 psi | 89% | 2989 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 53,229 psi | 85% | 2979 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,382 psi | 73% | 2854 fps | 98.4% |
| Norma 203B | <<locked>> | 84% | 56,434 psi | 90% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,666 psi | 89% | 3058 fps | 98% |
| Norma MRP | <<locked>> | 98% | 54,679 psi | 88% | 3136 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 55,811 psi | 89% | 3061 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,766 psi | 86% | 3002 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,780 psi | 86% | 3104 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 92% | 54,621 psi | 88% | 3061 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,892 psi | 77% | 2966 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 59% | 1939 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,534 psi | 87% | 2986 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,969 psi | 88% | 3094 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,185 psi | 85% | 3038 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,564 psi | 89% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,961 psi | 70% | 2979 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 82% | 54,027 psi | 87% | 2930 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,186 psi | 87% | 2979 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,043 psi | 90% | 3031 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 96% | 53,113 psi | 85% | 3031 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 88% | 53,635 psi | 86% | 2966 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,245 psi | 89% | 2989 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 55,550 psi | 89% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,229 psi | 85% | 2979 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,159 psi | 90% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,419 psi | 89% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,013 psi | 88% | 2943 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,202 psi | 90% | 3087 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 54,302 psi | 87% | 2976 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,331 psi | 87% | 2966 fps | 96% |
| Somchem S365 | <<locked>> | 94% | 55,274 psi | 89% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,650 psi | 86% | 3009 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 82% | 54,563 psi | 87% | 2890 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,781 psi | 88% | 2907 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,695 psi | 89% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,288 psi | 87% | 2999 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,011 psi | 85% | 2982 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 52,895 psi | 85% | 2897 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,272 psi | 85% | 2999 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 54,012 psi | 87% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,911 psi | 88% | 3127 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,041 psi | 87% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,651 psi | 89% | 3071 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,007 psi | 75% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,925 psi | 86% | 3002 fps | 97.8% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 51,634 psi | 83% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,647 psi | 80% | 2858 fps | 97.7% |
| Accurate 3100 | <<locked>> | 88% | 35,998 psi | 58% | 2657 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 48,936 psi | 78% | 2858 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,217 psi | 60% | 2703 fps | 97.9% |
| Accurate High Country | <<locked>> | 94% | 48,907 psi | 78% | 3035 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 46,369 psi | 74% | 2831 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 44,498 psi | 71% | 2874 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 96% | 48,762 psi | 78% | 2986 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,735 psi | 83% | 3058 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 44,788 psi | 72% | 2874 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 44,788 psi | 72% | 2874 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,050 psi | 75% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,067 psi | 80% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,492 psi | 59% | 2720 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,568 psi | 67% | 2854 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,266 psi | 71% | 2867 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,628 psi | 72% | 2917 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,571 psi | 43% | 2454 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,476 psi | 55% | 2703 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 84% | 32,866 psi | 53% | 2700 fps | 96% |
| Bofors RP15 | <<locked>> | 96% | 43,947 psi | 70% | 2904 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 47,079 psi | 75% | 2864 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 44,628 psi | 72% | 2917 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 41,394 psi | 66% | 2730 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 47,543 psi | 76% | 2877 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 39,566 psi | 63% | 2762 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 42,409 psi | 68% | 2785 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 96% | 52,257 psi | 84% | 2992 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,227 psi | 82% | 2972 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,055 psi | 55% | 2612 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,272 psi | 84% | 2982 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,060 psi | 66% | 2910 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 38,566 psi | 62% | 2769 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 43% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,040 psi | 85% | 2946 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,776 psi | 78% | 2871 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,213 psi | 82% | 2904 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 39,711 psi | 64% | 2710 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,033 psi | 69% | 2766 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 35,955 psi | 58% | 2661 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 51,372 psi | 82% | 2959 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,734 psi | 81% | 2930 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 49,617 psi | 80% | 3015 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 49,095 psi | 79% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,451 psi | 65% | 2713 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 38,682 psi | 62% | 2690 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 34,722 psi | 56% | 2625 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 49,385 psi | 79% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,281 psi | 73% | 2867 fps | 95.6% |
| Norma MRP | <<locked>> | 88% | 38,043 psi | 61% | 2799 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 37,362 psi | 60% | 2707 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,053 psi | 80% | 2940 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,470 psi | 75% | 2963 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 36,129 psi | 58% | 2687 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 96% | 41,133 psi | 66% | 2825 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,587 psi | 76% | 2861 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,237 psi | 71% | 2917 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,318 psi | 60% | 2726 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,187 psi | 58% | 2733 fps | 96.9% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,058 psi | 61% | 2828 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 50,778 psi | 81% | 2877 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,469 psi | 71% | 2812 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 49,414 psi | 79% | 2913 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 90% | 43,236 psi | 69% | 2848 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 41,394 psi | 66% | 2730 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,451 psi | 65% | 2713 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 49,095 psi | 79% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,682 psi | 62% | 2690 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,701 psi | 73% | 2867 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,818 psi | 73% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,581 psi | 63% | 2654 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,830 psi | 69% | 2838 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 44,788 psi | 72% | 2812 fps | 99.9% |
| Somchem S361 | <<locked>> | 92% | 50,633 psi | 81% | 2900 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 33,605 psi | 54% | 2654 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 41,060 psi | 66% | 2769 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 51,169 psi | 82% | 2844 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,503 psi | 83% | 2858 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,815 psi | 69% | 2740 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,609 psi | 62% | 2703 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 92% | 40,335 psi | 65% | 2743 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 49,574 psi | 79% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,058 psi | 61% | 2703 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 29,283 psi | 47% | 2530 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 96% | 50,995 psi | 82% | 3058 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,913 psi | 61% | 2677 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,566 psi | 63% | 2762 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,658 psi | 43% | 2539 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,526 psi | 70% | 2815 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 91 powders for 7 mm Rem. Mag. loaded with the .284 | 139gr | Hornady GMX. Alliant Reloder-26 delivers the highest muzzle velocity at 3,186 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,186 fps. Accurate 3100 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:10.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.