Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 140gr | Peregrine VLR-4 bullet and 85 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 Alliant Reloder-26.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 54,128 psi | 89% | 2982 fps | 98.9% |
| Accurate 3100 | <<locked>> | 98% | 52,504 psi | 86% | 3028 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 53,200 psi | 87% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,215 psi | 89% | 3077 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 53,925 psi | 89% | 3182 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 98% | 54,781 psi | 90% | 3179 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 53,635 psi | 88% | 3005 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 51,866 psi | 85% | 3068 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 98% | 53,258 psi | 87% | 3127 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 52,141 psi | 86% | 3068 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,215 psi | 89% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,447 psi | 89% | 3048 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 51,808 psi | 85% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 52,895 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,013 psi | 90% | 3117 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,402 psi | 86% | 3120 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,939 psi | 87% | 3100 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,963 psi | 75% | 3031 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 52,968 psi | 87% | 3189 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,358 psi | 84% | 3100 fps | 98.1% |
| Bofors RP3 | <<locked>> | 84% | 55,042 psi | 90% | 3038 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,402 psi | 86% | 3120 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 54,462 psi | 89% | 3028 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,498 psi | 75% | 2963 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 82% | 51,764 psi | 85% | 2999 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 52,910 psi | 87% | 3077 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 86% | 52,678 psi | 86% | 3035 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 96% | 53,272 psi | 87% | 3061 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,243 psi | 86% | 3045 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 51,996 psi | 85% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,831 psi | 74% | 3064 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 88% | 53,011 psi | 87% | 3110 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 60% | 1919 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,852 psi | 87% | 2982 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 52,359 psi | 86% | 3012 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 52,721 psi | 87% | 3002 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 54,882 psi | 90% | 3071 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,897 psi | 90% | 3054 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,288 psi | 89% | 3156 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 52,910 psi | 87% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 52,808 psi | 87% | 2995 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 54,056 psi | 89% | 3041 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,470 psi | 76% | 2927 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 53,751 psi | 88% | 3031 fps | 100% |
| Norma 204 | <<locked>> | 90% | 52,808 psi | 87% | 3061 fps | 98.1% |
| Norma MRP | <<locked>> | 96% | 52,054 psi | 85% | 3146 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 53,040 psi | 87% | 3064 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,665 psi | 90% | 3061 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,810 psi | 90% | 3176 fps | 98% |
| Ramshot Hunter | <<locked>> | 90% | 51,924 psi | 85% | 3064 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,095 psi | 81% | 3041 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 61% | 1962 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 51,909 psi | 85% | 2986 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,214 psi | 86% | 3097 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,389 psi | 89% | 3104 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,939 psi | 87% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,962 psi | 74% | 3061 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 54,998 psi | 90% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 51,547 psi | 85% | 2979 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,679 psi | 88% | 3041 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 96% | 54,259 psi | 89% | 3104 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 54,462 psi | 89% | 3028 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 52,808 psi | 87% | 2995 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 52,910 psi | 87% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,056 psi | 89% | 3041 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,447 psi | 88% | 3045 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,692 psi | 87% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,475 psi | 86% | 2946 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,795 psi | 88% | 3100 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 51,692 psi | 85% | 2979 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,779 psi | 85% | 2972 fps | 96.2% |
| Somchem S365 | <<locked>> | 92% | 52,750 psi | 87% | 3068 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,723 psi | 90% | 3074 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 52,953 psi | 87% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 51,590 psi | 85% | 3002 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,056 psi | 89% | 3048 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 53,766 psi | 88% | 2953 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,375 psi | 89% | 3064 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 51,822 psi | 85% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,330 psi | 86% | 3136 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,659 psi | 78% | 3031 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,100 psi | 90% | 3022 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,171 psi | 87% | 3081 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,704 psi | 80% | 3173 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,998 psi | 90% | 3071 fps | 98.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 50,459 psi | 83% | 2923 fps | 98.4% |
| Accurate 3100 | <<locked>> | 84% | 32,039 psi | 53% | 2605 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 49,719 psi | 82% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,116 psi | 63% | 2776 fps | 98.7% |
| Accurate High Country | <<locked>> | 90% | 43,294 psi | 71% | 2976 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 96% | 51,068 psi | 84% | 3114 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 47,239 psi | 78% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 42,482 psi | 70% | 2881 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 94% | 46,412 psi | 76% | 2992 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 39,987 psi | 66% | 2822 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,703 psi | 78% | 2917 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,010 psi | 84% | 2992 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,275 psi | 61% | 2792 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,467 psi | 70% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,566 psi | 65% | 2815 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,784 psi | 65% | 2864 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,064 psi | 44% | 2523 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,879 psi | 51% | 2651 fps | 95% |
| Alliant Reloder-26 | 59.5 gr | 80% | 29,037 psi | 48% | 2638 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 41,974 psi | 69% | 2913 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 48,037 psi | 79% | 2927 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,784 psi | 65% | 2864 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 42,177 psi | 69% | 2795 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 98% | 42,409 psi | 70% | 2894 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 48,457 psi | 80% | 2943 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,190 psi | 66% | 2828 fps | 96.9% |
| Hodgdon H4350 | <<locked>> | 80% | 43,221 psi | 71% | 2854 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 94% | 49,719 psi | 82% | 2999 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,762 psi | 80% | 2982 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,708 psi | 57% | 2674 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,189 psi | 64% | 2923 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 39,262 psi | 64% | 2838 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 44% | 1713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,661 psi | 82% | 2930 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,826 psi | 62% | 2717 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,598 psi | 72% | 2825 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 36,593 psi | 60% | 2723 fps | 98.4% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,414 psi | 79% | 2940 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 44,324 psi | 73% | 2963 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 49,763 psi | 82% | 2920 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,031 psi | 67% | 2772 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,233 psi | 64% | 2753 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 33,228 psi | 55% | 2638 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 50,328 psi | 83% | 2976 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,033 psi | 71% | 2871 fps | 95.9% |
| Norma MRP | 62 gr | 86% | 36,216 psi | 59% | 2808 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 38,014 psi | 62% | 2772 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 50,952 psi | 84% | 2999 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,947 psi | 72% | 2966 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 36,912 psi | 61% | 2756 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 94% | 39,088 psi | 64% | 2835 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 45% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,414 psi | 79% | 2923 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,165 psi | 74% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,159 psi | 63% | 2795 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,898 psi | 61% | 2805 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,100 psi | 59% | 2838 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 51,474 psi | 85% | 2933 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,150 psi | 74% | 2871 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,106 psi | 72% | 2864 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 41,278 psi | 68% | 2858 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 42,177 psi | 69% | 2795 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,031 psi | 67% | 2772 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 49,763 psi | 82% | 2920 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,233 psi | 64% | 2753 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,572 psi | 76% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,485 psi | 76% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,118 psi | 66% | 2713 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,901 psi | 67% | 2851 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 45,469 psi | 75% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,341 psi | 79% | 2910 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,432 psi | 57% | 2723 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,521 psi | 60% | 2717 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 43,468 psi | 71% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,421 psi | 65% | 2772 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 38,551 psi | 63% | 2753 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 50,430 psi | 83% | 2904 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,856 psi | 64% | 2772 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 29,878 psi | 49% | 2602 fps | 96.7% |
| Vihtavuori N560 | 67.8 gr | 94% | 48,602 psi | 80% | 3064 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 98% | 44,454 psi | 73% | 2969 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,609 psi | 63% | 2736 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,393 psi | 66% | 2831 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,786 psi | 39% | 2480 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,220 psi | 68% | 2818 fps | 95.5% |
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 85 powders for 7 mm Blaser Mag. loaded with the .284 | 140gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 3,189 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,189 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:9.0 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, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 7 mm Blaser Mag. with the .284 | 140gr | Peregrine VLR-4 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.