Load Specifications
Load data in caliber 7 mm Rem. Mag. with .284 | 145gr | Speer Grand Slam bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Vihtavuori N560 and Norma MRP.
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 2700 | <<locked>> | 84% | 54,926 psi | 88% | 2887 fps | 99% |
| Accurate 3100 | <<locked>> | 96% | 52,837 psi | 85% | 2933 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 54,563 psi | 87% | 2979 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,912 psi | 90% | 3081 fps | 96% |
| ADI AR 2208 | <<locked>> | 82% | 52,997 psi | 85% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,492 psi | 89% | 3028 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 96% | 53,171 psi | 85% | 3022 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,262 psi | 63% | 2785 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,143 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,405 psi | 89% | 3038 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,808 psi | 85% | 2999 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,824 psi | 88% | 3012 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,391 psi | 90% | 3081 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,708 psi | 86% | 3005 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,559 psi | 79% | 2995 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,708 psi | 86% | 3087 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,259 psi | 89% | 3061 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 54,911 psi | 88% | 2936 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,498 psi | 73% | 2910 fps | 96% |
| Bofors RP5 | <<locked>> | 98% | 56,391 psi | 90% | 3081 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 54,172 psi | 87% | 2923 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,629 psi | 73% | 2867 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 82% | 55,245 psi | 89% | 2956 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 53,896 psi | 86% | 2989 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 54,418 psi | 87% | 2966 fps | 98.7% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 56,115 psi | 90% | 3009 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,869 psi | 90% | 3005 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,637 psi | 89% | 2959 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,385 psi | 78% | 3038 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 86% | 53,011 psi | 85% | 3005 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,680 psi | 59% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,840 psi | 90% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,550 psi | 89% | 2923 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,041 psi | 87% | 2900 fps | 99.3% |
| IMR 4350 | <<locked>> | 90% | 55,492 psi | 89% | 2963 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,709 psi | 89% | 2953 fps | 99.5% |
| IMR 4831 | <<locked>> | 94% | 55,999 psi | 90% | 2986 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,679 psi | 88% | 2953 fps | 97% |
| IMR 7828 SSC | <<locked>> | 96% | 54,824 psi | 88% | 3064 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 56,362 psi | 90% | 2923 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,144 psi | 90% | 2953 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 54,259 psi | 87% | 2943 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,328 psi | 81% | 2890 fps | 99.5% |
| Norma 204 | <<locked>> | 90% | 56,405 psi | 90% | 3015 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 56,260 psi | 90% | 3107 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 53,330 psi | 86% | 2963 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,607 psi | 88% | 3071 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 55,637 psi | 89% | 3018 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 55,506 psi | 89% | 3048 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 60% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,868 psi | 88% | 2936 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,086 psi | 90% | 3045 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,578 psi | 88% | 3002 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,924 psi | 85% | 3028 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,834 psi | 78% | 3035 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 84% | 55,303 psi | 89% | 2936 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,345 psi | 86% | 2936 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 94% | 54,172 psi | 87% | 2999 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,172 psi | 87% | 2923 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,144 psi | 90% | 2953 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 56,362 psi | 90% | 2923 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,259 psi | 87% | 2943 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,156 psi | 85% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,550 psi | 89% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,695 psi | 89% | 2904 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,722 psi | 86% | 2992 fps | 98.5% |
| Somchem S355 | <<locked>> | 84% | 54,926 psi | 88% | 2927 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,926 psi | 88% | 2930 fps | 96.8% |
| Somchem S365 | <<locked>> | 90% | 53,069 psi | 85% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,027 psi | 88% | 2976 fps | 99.2% |
| Unknown powder | <<locked>> | 86% | 53,519 psi | 86% | 2963 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,330 psi | 86% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,012 psi | 87% | 2936 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2979 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 86% | 54,346 psi | 87% | 2979 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,912 psi | 90% | 3028 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,924 psi | 85% | 3041 fps | 96.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,953 psi | 83% | 3005 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,592 psi | 88% | 2917 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,896 psi | 86% | 2989 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,737 psi | 86% | 3133 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,576 psi | 84% | 2933 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 2700 | <<locked>> | 80% | 48,254 psi | 77% | 2776 fps | 98% |
| Accurate 3100 | <<locked>> | 82% | 32,866 psi | 53% | 2526 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 41,495 psi | 67% | 2743 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 96% | 52,054 psi | 83% | 3015 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,951 psi | 80% | 2841 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,554 psi | 68% | 2782 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 92% | 46,340 psi | 74% | 2890 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 36,825 psi | 59% | 2720 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,792 psi | 81% | 2867 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,030 psi | 64% | 2753 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,876 psi | 74% | 2881 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,351 psi | 68% | 2776 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,234 psi | 65% | 2769 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,573 psi | 47% | 2500 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,459 psi | 50% | 2569 fps | 95.1% |
| Alliant Reloder-26 | 60.3 gr | 80% | 31,836 psi | 51% | 2618 fps | 96.2% |
| Bofors RP15 | <<locked>> | 92% | 42,438 psi | 68% | 2818 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 51,445 psi | 82% | 2881 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,322 psi | 68% | 2844 fps | 95% |
| Bofors RP5 | <<locked>> | 88% | 40,234 psi | 65% | 2769 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,933 psi | 72% | 2756 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 98% | 42,612 psi | 68% | 2802 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 51,576 psi | 83% | 2897 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,137 psi | 76% | 2867 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 42,293 psi | 68% | 2736 fps | 96% |
| Hodgdon H4831 | <<locked>> | 96% | 49,081 psi | 79% | 2887 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,617 psi | 78% | 2877 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,608 psi | 60% | 2638 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,784 psi | 64% | 2835 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 42,337 psi | 68% | 2805 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 44% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,634 psi | 84% | 2884 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,052 psi | 79% | 2818 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,848 psi | 77% | 2792 fps | 98.5% |
| IMR 4350 | <<locked>> | 80% | 40,422 psi | 65% | 2677 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,151 psi | 74% | 2782 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 35,969 psi | 58% | 2608 fps | 98.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,211 psi | 77% | 2835 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 47,718 psi | 77% | 2930 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 52,924 psi | 85% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,859 psi | 70% | 2733 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 42,105 psi | 68% | 2713 fps | 97.5% |
| Lovex S071 | <<locked>> | 86% | 32,213 psi | 52% | 2510 fps | 95% |
| Norma 204 | <<locked>> | 82% | 42,960 psi | 69% | 2769 fps | 95.7% |
| Norma MRP | 61.5 gr | 84% | 36,811 psi | 59% | 2720 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 40,959 psi | 66% | 2733 fps | 99.1% |
| Ramshot Grand | <<locked>> | 90% | 46,804 psi | 75% | 2923 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 39,900 psi | 64% | 2723 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 88% | 37,782 psi | 61% | 2703 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 45% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,561 psi | 83% | 2881 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,689 psi | 78% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,336 psi | 66% | 2762 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,827 psi | 64% | 2772 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,564 psi | 59% | 2746 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 48,472 psi | 78% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 47,094 psi | 76% | 2825 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 86% | 41,640 psi | 67% | 2759 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,933 psi | 72% | 2756 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,859 psi | 70% | 2733 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 52,924 psi | 85% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,105 psi | 68% | 2713 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,879 psi | 80% | 2884 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,226 psi | 79% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,830 psi | 69% | 2674 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,321 psi | 66% | 2756 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,544 psi | 78% | 2825 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,269 psi | 77% | 2815 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 37,623 psi | 60% | 2690 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,927 psi | 59% | 2625 fps | 95% |
| Unknown powder | <<locked>> | 80% | 43,961 psi | 70% | 2789 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 80% | 41,640 psi | 67% | 2664 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,179 psi | 71% | 2766 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 90% | 40,263 psi | 65% | 2690 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 44,657 psi | 72% | 2808 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 32,996 psi | 53% | 2579 fps | 97.7% |
| Vihtavuori N560 | 67.4 gr | 94% | 49,501 psi | 79% | 2979 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 96% | 45,237 psi | 73% | 2877 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,452 psi | 66% | 2700 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,137 psi | 76% | 2867 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,252 psi | 42% | 2484 fps | 96.9% |
| Winchester Supreme 780 | <<locked>> | 86% | 42,496 psi | 68% | 2746 fps | 95.7% |
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 87 powders for 7 mm Rem. Mag. loaded with the .284 | 145gr | Speer Grand Slam. Winchester StaBALL HD delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,133 fps. ADI AR 2217 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:13.0 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. Alliant Reloder-26, Vihtavuori N560, Norma MRP rank at the top here: for 7 mm Rem. Mag. with the .284 | 145gr | Speer Grand Slam they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.