Load Specifications
Load data in caliber 7 mm Rem. Mag. with .284 | 140gr | Barnes MRX BT bullet and 86 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 ReloadSwiss RS 70.
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% | 56,057 psi | 90% | 2907 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,041 psi | 87% | 2930 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,217 psi | 90% | 3031 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 53,098 psi | 85% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,433 psi | 87% | 3028 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 54,926 psi | 88% | 3117 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 53,534 psi | 86% | 2953 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,724 psi | 89% | 3077 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 98% | 53,185 psi | 85% | 3064 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,404 psi | 87% | 2976 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,404 psi | 87% | 2995 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,434 psi | 89% | 3091 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 52,852 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,940 psi | 88% | 3058 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,057 psi | 90% | 3123 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,098 psi | 85% | 3048 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,876 psi | 74% | 2969 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,171 psi | 85% | 3133 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,271 psi | 82% | 3038 fps | 97.6% |
| Bofors RP3 | <<locked>> | 84% | 55,201 psi | 89% | 2992 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,057 psi | 90% | 3123 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 54,621 psi | 88% | 2976 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 55,550 psi | 89% | 3009 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,069 psi | 85% | 3025 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 56,391 psi | 90% | 3041 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 96% | 53,447 psi | 86% | 3009 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,869 psi | 90% | 3048 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,637 psi | 89% | 3009 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,991 psi | 72% | 3005 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 88% | 53,185 psi | 85% | 3058 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 58% | 1893 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,347 psi | 90% | 2986 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,448 psi | 89% | 2969 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 55,782 psi | 89% | 3012 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,405 psi | 90% | 3009 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 54,795 psi | 88% | 3018 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,811 psi | 89% | 3022 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,071 psi | 88% | 3002 fps | 96.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,433 psi | 87% | 3097 fps | 97% |
| Lovex S062 | <<locked>> | 84% | 56,434 psi | 90% | 2976 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,275 psi | 90% | 3002 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 54,244 psi | 87% | 2989 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,398 psi | 74% | 2867 fps | 98.7% |
| Norma 203B | <<locked>> | 82% | 53,708 psi | 86% | 2979 fps | 100% |
| Norma 204 | <<locked>> | 90% | 52,968 psi | 85% | 3005 fps | 97.6% |
| Norma MRP | <<locked>> | 98% | 56,043 psi | 90% | 3150 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 53,200 psi | 85% | 3012 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,592 psi | 88% | 3005 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,998 psi | 88% | 3120 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 55,666 psi | 89% | 3068 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,994 psi | 79% | 2982 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 60% | 1939 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,550 psi | 89% | 2995 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,217 psi | 90% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,534 psi | 87% | 3051 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,852 psi | 85% | 3077 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,121 psi | 72% | 2999 fps | 98% |
| Rottweil R 902 | <<locked>> | 82% | 54,897 psi | 88% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,332 psi | 89% | 2989 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,563 psi | 86% | 2982 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 96% | 54,143 psi | 87% | 3045 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 54,621 psi | 88% | 2976 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,275 psi | 90% | 3002 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 56,434 psi | 90% | 2976 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,244 psi | 87% | 2989 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,345 psi | 86% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,217 psi | 90% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,956 psi | 90% | 2949 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,679 psi | 86% | 3041 fps | 98.1% |
| Somchem S355 | <<locked>> | 86% | 55,143 psi | 88% | 2979 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,376 psi | 89% | 2979 fps | 96.4% |
| Somchem S365 | <<locked>> | 92% | 52,692 psi | 84% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,650 psi | 88% | 3018 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 55,550 psi | 89% | 2897 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,637 psi | 89% | 2910 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,127 psi | 85% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,347 psi | 89% | 3009 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,244 psi | 87% | 2995 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 53,954 psi | 87% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,302 psi | 87% | 3009 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,463 psi | 89% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,188 psi | 90% | 3143 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,984 psi | 88% | 2972 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,069 psi | 85% | 3025 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,588 psi | 78% | 3110 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,158 psi | 88% | 3018 fps | 98.1% |
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% | 52,373 psi | 84% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,647 psi | 81% | 2871 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 34,374 psi | 55% | 2608 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 49,661 psi | 80% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,261 psi | 61% | 2720 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 96% | 50,981 psi | 82% | 3048 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 47,166 psi | 76% | 2838 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 42,612 psi | 68% | 2828 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 96% | 49,617 psi | 80% | 2995 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,906 psi | 77% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,155 psi | 82% | 2940 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,231 psi | 60% | 2733 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,612 psi | 68% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,235 psi | 68% | 2818 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,511 psi | 68% | 2864 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,050 psi | 43% | 2461 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,953 psi | 53% | 2651 fps | 95.2% |
| Alliant Reloder-26 | 61 gr | 82% | 31,270 psi | 50% | 2644 fps | 95.3% |
| Bofors RP15 | <<locked>> | 94% | 41,930 psi | 67% | 2851 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 48,211 psi | 77% | 2877 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,511 psi | 68% | 2864 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 42,119 psi | 68% | 2740 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 48,588 psi | 78% | 2890 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 40,321 psi | 65% | 2772 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 80% | 43,366 psi | 70% | 2799 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 94% | 49,893 psi | 80% | 2946 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,127 psi | 84% | 2986 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,679 psi | 56% | 2618 fps | 98.8% |
| Hodgdon Retumbo | <<locked>> | 98% | 42,076 psi | 67% | 2933 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 39,392 psi | 63% | 2782 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 44% | 1693 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,632 psi | 80% | 2877 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,996 psi | 83% | 2910 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 40,408 psi | 65% | 2723 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,743 psi | 70% | 2776 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 36,724 psi | 59% | 2671 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 52,475 psi | 84% | 2969 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,576 psi | 83% | 2940 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 96% | 47,413 psi | 76% | 2966 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 49,705 psi | 80% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,959 psi | 66% | 2720 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 39,407 psi | 63% | 2700 fps | 96.3% |
| Lovex S071 | <<locked>> | 92% | 35,621 psi | 57% | 2641 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 50,502 psi | 81% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,989 psi | 69% | 2815 fps | 95.1% |
| Norma MRP | 63.5 gr | 88% | 38,899 psi | 62% | 2815 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 38,130 psi | 61% | 2717 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 51,111 psi | 82% | 2949 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 47,369 psi | 76% | 2979 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 37,028 psi | 59% | 2703 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 42,148 psi | 68% | 2844 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,588 psi | 78% | 2874 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,310 psi | 73% | 2927 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,101 psi | 61% | 2736 fps | 97.9% |
| ReloadSwiss RS 70 | 59 gr | 80% | 37,028 psi | 59% | 2746 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,928 psi | 62% | 2848 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 51,634 psi | 83% | 2887 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,324 psi | 73% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,094 psi | 76% | 2864 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 41,234 psi | 66% | 2795 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,119 psi | 68% | 2740 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,959 psi | 66% | 2720 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 49,705 psi | 80% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,407 psi | 63% | 2700 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,731 psi | 75% | 2877 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,398 psi | 74% | 2723 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,263 psi | 65% | 2664 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,816 psi | 70% | 2854 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 45,411 psi | 73% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,692 psi | 83% | 2917 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 34,563 psi | 55% | 2671 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 39,233 psi | 63% | 2723 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 51,880 psi | 83% | 2844 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,359 psi | 84% | 2864 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,598 psi | 70% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,595 psi | 63% | 2720 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 41,437 psi | 66% | 2759 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 50,589 psi | 81% | 2854 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,986 psi | 63% | 2717 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 30,008 psi | 48% | 2546 fps | 96% |
| Vihtavuori N560 | <<locked>> | 94% | 48,762 psi | 78% | 3009 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,754 psi | 62% | 2687 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 40,524 psi | 65% | 2776 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,541 psi | 41% | 2487 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,411 psi | 71% | 2825 fps | 95.8% |
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 92 powders for 7 mm Rem. Mag. loaded with the .284 | 140gr | Barnes MRX BT. Norma MRP delivers the highest muzzle velocity at 3,150 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,150 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 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 140.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2217, ADI AR 2225 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, ReloadSwiss RS 70 rank at the top here: for 7 mm Rem. Mag. with the .284 | 140gr | Barnes MRX BT 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.