Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 145gr | Speer Hot-Cor bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP and Vihtavuori N560.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 52,576 psi | 86% | 2992 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 53,954 psi | 89% | 3031 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,839 psi | 90% | 3143 fps | 97.4% |
| ADI AR 2209 | <<locked>> | 92% | 54,882 psi | 90% | 3087 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 52,620 psi | 86% | 3084 fps | 97.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,992 psi | 77% | 2969 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,785 psi | 69% | 2923 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,839 psi | 90% | 3091 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,156 psi | 86% | 3048 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,302 psi | 89% | 3071 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,518 psi | 86% | 3084 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,330 psi | 88% | 3058 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,634 psi | 86% | 3114 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,519 psi | 88% | 3146 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 55,085 psi | 90% | 3127 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,646 psi | 80% | 3041 fps | 97.8% |
| Bofors RP5 | <<locked>> | 94% | 52,518 psi | 86% | 3084 fps | 99% |
| Bofors RP7 | <<locked>> | 84% | 53,243 psi | 87% | 2976 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,982 psi | 85% | 3064 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 84% | 52,315 psi | 86% | 3028 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 84% | 54,940 psi | 90% | 3041 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 92% | 52,504 psi | 86% | 3018 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,590 psi | 85% | 3002 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 51,808 psi | 85% | 2959 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,590 psi | 85% | 3179 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 84% | 52,344 psi | 86% | 3061 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 60% | 1919 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,592 psi | 90% | 3015 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,694 psi | 90% | 3002 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 54,476 psi | 89% | 3025 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,969 psi | 89% | 3009 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 96% | 53,983 psi | 89% | 3120 fps | 98.3% |
| Lovex S065 | <<locked>> | 84% | 51,953 psi | 85% | 2946 fps | 99.9% |
| Lovex S070 | <<locked>> | 86% | 53,330 psi | 88% | 2995 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,563 psi | 88% | 3009 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,967 psi | 85% | 3012 fps | 98.6% |
| Norma 217ᴾ | <<locked>> | 100% | 37,318 psi | 61% | 2841 fps | 96.6% |
| Norma MRP | <<locked>> | 92% | 52,141 psi | 86% | 3104 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 52,562 psi | 86% | 3015 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,433 psi | 89% | 3140 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 54,940 psi | 90% | 3074 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,881 psi | 87% | 3071 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 62% | 1965 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,882 psi | 88% | 3051 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,069 psi | 85% | 3077 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,156 psi | 86% | 3176 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 54,346 psi | 89% | 2979 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,620 psi | 86% | 2995 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 92% | 53,766 psi | 88% | 3061 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 84% | 53,243 psi | 87% | 2976 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 51,953 psi | 85% | 2946 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 53,330 psi | 88% | 2995 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,520 psi | 90% | 2851 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,433 psi | 89% | 2949 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,316 psi | 88% | 3054 fps | 99% |
| Somchem S355 | <<locked>> | 82% | 54,027 psi | 89% | 2972 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,215 psi | 89% | 2986 fps | 97.5% |
| Somchem S365 | <<locked>> | 88% | 52,634 psi | 86% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,433 psi | 89% | 3035 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 51,880 psi | 85% | 2894 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,360 psi | 89% | 3005 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,882 psi | 88% | 3012 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 86% | 53,635 psi | 88% | 3012 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,272 psi | 86% | 3035 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,069 psi | 85% | 3097 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 98% | 51,735 psi | 85% | 3068 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,780 psi | 88% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,315 psi | 86% | 3028 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,317 psi | 89% | 3196 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,259 psi | 89% | 3025 fps | 99% |
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 3100 | <<locked>> | 80% | 32,721 psi | 54% | 2585 fps | 96.3% |
| Accurate 4350 | <<locked>> | 80% | 44,005 psi | 72% | 2858 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 47,427 psi | 78% | 3009 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 82% | 39,247 psi | 64% | 2779 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 88% | 42,917 psi | 70% | 2890 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 96% | 41,133 psi | 68% | 2838 fps | 95% |
| ADI AR 2225 | <<locked>> | 94% | 34,490 psi | 57% | 2730 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,047 psi | 69% | 2861 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,646 psi | 80% | 2989 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 39,334 psi | 65% | 2776 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,333 psi | 61% | 2769 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,357 psi | 51% | 2615 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,211 psi | 48% | 2566 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,069 psi | 56% | 2749 fps | 98.2% |
| Bofors RP15 | <<locked>> | 88% | 39,653 psi | 65% | 2822 fps | 95.9% |
| Bofors RP30 | <<locked>> | 94% | 39,653 psi | 65% | 2854 fps | 95.2% |
| Bofors RP5 | <<locked>> | 84% | 37,333 psi | 61% | 2769 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 46,949 psi | 77% | 2861 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 92% | 39,465 psi | 65% | 2802 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 45,614 psi | 75% | 2904 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 48,225 psi | 79% | 2920 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 45,818 psi | 75% | 2897 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,034 psi | 74% | 2877 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,813 psi | 65% | 2746 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,043 psi | 61% | 2841 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 45,034 psi | 74% | 2927 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 45% | 1719 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,496 psi | 70% | 2789 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,312 psi | 79% | 2890 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 41,887 psi | 69% | 2802 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,657 psi | 73% | 2835 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 90% | 43,932 psi | 72% | 2923 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 45,876 psi | 75% | 2838 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 44,121 psi | 72% | 2822 fps | 98.6% |
| Lovex S071 | <<locked>> | 82% | 30,081 psi | 49% | 2510 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 42,279 psi | 69% | 2822 fps | 96.5% |
| Norma 217 | <<locked>> | 98% | 35,027 psi | 57% | 2779 fps | 95.6% |
| Norma MRP | 61.6 gr | 80% | 34,084 psi | 56% | 2713 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 43,120 psi | 71% | 2841 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 40,814 psi | 67% | 2867 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 42,047 psi | 69% | 2835 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 36,477 psi | 60% | 2740 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,297 psi | 46% | 1759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,830 psi | 72% | 2874 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,061 psi | 69% | 2887 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,939 psi | 56% | 2749 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 50,850 psi | 83% | 2927 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,511 psi | 71% | 2818 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 82% | 38,522 psi | 63% | 2756 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 46,949 psi | 77% | 2861 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,876 psi | 75% | 2838 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 44,121 psi | 72% | 2822 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,242 psi | 84% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,860 psi | 74% | 2779 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,174 psi | 63% | 2749 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 50,807 psi | 83% | 2923 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,440 psi | 73% | 2805 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 40,118 psi | 66% | 2799 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,579 psi | 60% | 2680 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 48,559 psi | 80% | 2841 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,657 psi | 73% | 2838 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 36,114 psi | 59% | 2661 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 44,106 psi | 72% | 2844 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,114 psi | 58% | 2694 fps | 99% |
| Vihtavuori N560 | 67.7 gr | 88% | 45,295 psi | 74% | 2963 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 42,206 psi | 69% | 2881 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,743 psi | 72% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,803 psi | 75% | 2910 fps | 98.8% |
| Winchester StaBALL HD | 60.9 gr | 80% | 27,833 psi | 46% | 2615 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,247 psi | 63% | 2720 fps | 95.4% |
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 70 powders for 7 mm Blaser Mag. loaded with the .284 | 145gr | Speer Hot-Cor. Winchester StaBALL HD delivers the highest muzzle velocity at 3,196 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,196 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm Blaser Mag. with the .284 | 145gr | Speer Hot-Cor 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.