Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 135gr | Atomic 29 HP bullet and 77 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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 55,027 psi | 90% | 3120 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 53,069 psi | 87% | 3110 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,388 psi | 88% | 3205 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 84% | 55,100 psi | 90% | 3081 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,853 psi | 88% | 3156 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 96% | 51,706 psi | 85% | 3150 fps | 96.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,159 psi | 63% | 2900 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,794 psi | 87% | 3054 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,693 psi | 88% | 3169 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,114 psi | 90% | 3192 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,447 psi | 88% | 3146 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,868 psi | 90% | 3212 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,011 psi | 85% | 3136 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,950 psi | 79% | 3120 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,822 psi | 85% | 3219 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,780 psi | 88% | 3192 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 53,621 psi | 88% | 3071 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,868 psi | 90% | 3212 fps | 98.7% |
| Bofors RP7 | <<locked>> | 86% | 52,953 psi | 87% | 3054 fps | 98.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,427 psi | 78% | 3051 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 82% | 53,940 psi | 89% | 3087 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,955 psi | 90% | 3163 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 54,447 psi | 89% | 3117 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 94% | 51,808 psi | 85% | 3087 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,259 psi | 89% | 3133 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,186 psi | 89% | 3087 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,963 psi | 77% | 3163 fps | 98% |
| Hodgdon Superformance | <<locked>> | 86% | 51,474 psi | 85% | 3136 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,680 psi | 60% | 1972 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,520 psi | 90% | 3064 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,201 psi | 89% | 3094 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,476 psi | 89% | 3084 fps | 99.3% |
| IMR 4831 | <<locked>> | 90% | 53,519 psi | 88% | 3104 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,258 psi | 87% | 3077 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 98% | 52,881 psi | 87% | 3182 fps | 97.2% |
| Lovex S062 | <<locked>> | 82% | 55,042 psi | 90% | 3058 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,781 psi | 90% | 3081 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 52,852 psi | 87% | 3071 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,892 psi | 80% | 3015 fps | 99.3% |
| Norma 204 | <<locked>> | 90% | 54,853 psi | 90% | 3146 fps | 98.3% |
| Norma MRP | <<locked>> | 96% | 54,549 psi | 90% | 3238 fps | 99.5% |
| Norma URP | <<locked>> | 88% | 51,779 psi | 85% | 3094 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,461 psi | 88% | 3205 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 90% | 54,056 psi | 89% | 3150 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,401 psi | 84% | 3130 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 61% | 2014 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,563 psi | 88% | 3068 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,505 psi | 89% | 3186 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,924 psi | 87% | 3130 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 51,213 psi | 84% | 3156 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,268 psi | 78% | 3156 fps | 99% |
| Rottweil R 903 | <<locked>> | 84% | 53,954 psi | 89% | 3068 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,011 psi | 85% | 3064 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 94% | 52,736 psi | 87% | 3130 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 86% | 52,953 psi | 87% | 3054 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,781 psi | 90% | 3081 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,042 psi | 90% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,852 psi | 87% | 3071 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 51,808 psi | 85% | 3071 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,346 psi | 89% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,259 psi | 89% | 3028 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,286 psi | 86% | 3123 fps | 98.2% |
| Somchem S355 | <<locked>> | 84% | 53,693 psi | 88% | 3064 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,708 psi | 88% | 3058 fps | 96.5% |
| Somchem S365 | <<locked>> | 92% | 55,013 psi | 90% | 3153 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,534 psi | 88% | 3107 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 55,013 psi | 90% | 3035 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,737 psi | 88% | 3087 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,794 psi | 87% | 3077 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 88% | 53,011 psi | 87% | 3094 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,302 psi | 89% | 3163 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,592 psi | 90% | 3225 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,256 psi | 83% | 3127 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,229 psi | 87% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 51,590 psi | 85% | 3104 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,706 psi | 85% | 3268 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,316 psi | 88% | 3094 fps | 98.2% |
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>> | 84% | 34,055 psi | 56% | 2697 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 40,190 psi | 66% | 2864 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 49,763 psi | 82% | 3136 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 48,689 psi | 80% | 2972 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,379 psi | 68% | 2904 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 48,443 psi | 80% | 3084 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 98% | 35,868 psi | 59% | 2835 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,588 psi | 81% | 2999 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,769 psi | 64% | 2874 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,295 psi | 73% | 3005 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,321 psi | 68% | 2900 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 41,669 psi | 68% | 2953 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,674 psi | 47% | 2612 fps | 97.2% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,489 psi | 53% | 2740 fps | 95.7% |
| Alliant Reloder-26 | 62 gr | 80% | 30,893 psi | 51% | 2733 fps | 95.8% |
| Bofors RP15 | <<locked>> | 92% | 41,278 psi | 68% | 2943 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 50,285 psi | 83% | 3015 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 41,669 psi | 68% | 2953 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 43,918 psi | 72% | 2881 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 98% | 44,425 psi | 73% | 2986 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 50,415 psi | 83% | 3028 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,032 psi | 69% | 2913 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 80% | 44,962 psi | 74% | 2940 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 48,327 psi | 79% | 3022 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,398 psi | 78% | 3005 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,550 psi | 60% | 2759 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,147 psi | 68% | 3022 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 41,147 psi | 68% | 2930 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 45% | 1762 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,227 psi | 84% | 3009 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,392 psi | 65% | 2799 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,121 psi | 74% | 2910 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 38,638 psi | 63% | 2815 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,065 psi | 77% | 2963 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 94% | 46,195 psi | 76% | 3051 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 51,735 psi | 85% | 3005 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,815 psi | 70% | 2858 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 41,031 psi | 67% | 2838 fps | 97.2% |
| Lovex S071 | <<locked>> | 88% | 33,098 psi | 54% | 2671 fps | 95.4% |
| Norma 204 | <<locked>> | 82% | 41,785 psi | 69% | 2890 fps | 95.3% |
| Norma MRP | 64.6 gr | 86% | 38,101 psi | 63% | 2900 fps | 96% |
| Norma URP | <<locked>> | 80% | 39,798 psi | 65% | 2858 fps | 98.8% |
| Ramshot Grand | <<locked>> | 94% | 46,209 psi | 76% | 3061 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 38,653 psi | 63% | 2841 fps | 97.2% |
| Ramshot Magnum | <<locked>> | 92% | 38,232 psi | 63% | 2854 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 46% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,140 psi | 82% | 3009 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,036 psi | 77% | 3061 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,089 psi | 66% | 2884 fps | 98.8% |
| ReloadSwiss RS 70 | 61.4 gr | 80% | 38,711 psi | 64% | 2894 fps | 98.3% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,232 psi | 63% | 2936 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 47,224 psi | 78% | 2956 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,832 psi | 75% | 2946 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 40,422 psi | 66% | 2881 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 43,918 psi | 72% | 2881 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,815 psi | 70% | 2858 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 51,735 psi | 85% | 3005 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,031 psi | 67% | 2838 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,414 psi | 79% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,037 psi | 79% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,959 psi | 69% | 2799 fps | 97.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,045 psi | 66% | 2877 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 47,384 psi | 78% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,299 psi | 83% | 2995 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 36,347 psi | 60% | 2812 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 38,450 psi | 63% | 2802 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 45,252 psi | 74% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,162 psi | 68% | 2854 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 90% | 40,408 psi | 66% | 2838 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 40,741 psi | 67% | 2858 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 31,879 psi | 52% | 2694 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 92% | 47,572 psi | 78% | 3094 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 46,847 psi | 77% | 3061 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,277 psi | 66% | 2818 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 42,206 psi | 69% | 2920 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,382 psi | 42% | 2582 fps | 96.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,263 psi | 66% | 2841 fps | 95% |
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 83 powders for 7 mm Blaser Mag. loaded with the .284 | 135gr | Atomic 29 HP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,268 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,268 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.284" calls for a 1:11.0 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, Norma MRP, ReloadSwiss RS 70 rank at the top here: for 7 mm Blaser Mag. with the .284 | 135gr | Atomic 29 HP 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.