Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 125gr | Lehigh Defense Controlled Chaos bullet and 83 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 Alliant Reloder-16.
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 2495 | <<locked>> | 82% | 53,708 psi | 88% | 3074 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,114 psi | 90% | 3140 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,040 psi | 87% | 3179 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 54,230 psi | 89% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,085 psi | 90% | 3245 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 53,882 psi | 88% | 3327 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 86% | 54,389 psi | 89% | 3169 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,518 psi | 86% | 3219 fps | 97.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,824 psi | 88% | 3268 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,403 psi | 88% | 3294 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 52,649 psi | 86% | 3219 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 51,721 psi | 85% | 3136 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 51,967 psi | 85% | 3159 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,199 psi | 86% | 3245 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,301 psi | 88% | 3274 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 51,938 psi | 85% | 3209 fps | 97.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,533 psi | 86% | 3264 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,516 psi | 81% | 3199 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,323 psi | 71% | 3107 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,258 psi | 87% | 3346 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,153 psi | 79% | 3176 fps | 96.2% |
| Bofors RP3 | <<locked>> | 84% | 52,402 psi | 86% | 3153 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,533 psi | 86% | 3264 fps | 97.4% |
| Bofors RP7 | <<locked>> | 88% | 51,996 psi | 85% | 3127 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 84% | 52,982 psi | 87% | 3169 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 53,563 psi | 88% | 3235 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 53,330 psi | 88% | 3189 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,388 psi | 86% | 3163 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,882 psi | 88% | 3209 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,737 psi | 88% | 3271 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 59% | 2024 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,810 psi | 90% | 3176 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,954 psi | 89% | 3153 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,968 psi | 87% | 3120 fps | 98.5% |
| IMR 4350 | <<locked>> | 92% | 52,939 psi | 87% | 3163 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,592 psi | 88% | 3159 fps | 98.5% |
| IMR 4831 | <<locked>> | 92% | 51,779 psi | 85% | 3169 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 53,316 psi | 88% | 3192 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,085 psi | 89% | 3143 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,780 psi | 88% | 3159 fps | 99.4% |
| Lovex S070 | <<locked>> | 90% | 51,692 psi | 85% | 3143 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,932 psi | 72% | 3012 fps | 97.8% |
| Norma 203B | <<locked>> | 84% | 54,723 psi | 90% | 3202 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,708 psi | 88% | 3215 fps | 97.2% |
| Norma MRP | <<locked>> | 98% | 52,069 psi | 85% | 3294 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 53,751 psi | 88% | 3228 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 51,764 psi | 85% | 3166 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 52,649 psi | 86% | 3222 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,934 psi | 75% | 3107 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 61% | 2073 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 52,765 psi | 87% | 3143 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,692 psi | 87% | 3264 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,766 psi | 90% | 3261 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,577 psi | 88% | 3294 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,409 psi | 70% | 3117 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 82% | 52,591 psi | 86% | 3104 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,504 psi | 86% | 3150 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,215 psi | 89% | 3189 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 98% | 54,418 psi | 89% | 3251 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 88% | 51,996 psi | 85% | 3127 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,780 psi | 88% | 3159 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 54,085 psi | 89% | 3143 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 51,692 psi | 85% | 3143 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,041 psi | 89% | 3209 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,056 psi | 90% | 3186 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,693 psi | 88% | 3031 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,447 psi | 88% | 3100 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,940 psi | 89% | 3245 fps | 97.6% |
| Somchem S355 | <<locked>> | 86% | 52,721 psi | 87% | 3146 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 52,837 psi | 87% | 3228 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 51,750 psi | 85% | 3166 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 82% | 52,953 psi | 87% | 3064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,272 psi | 87% | 3077 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,882 psi | 88% | 3117 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,359 psi | 86% | 3163 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,126 psi | 84% | 3136 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 55,027 psi | 90% | 3127 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,100 psi | 90% | 3225 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 51,909 psi | 85% | 3228 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,069 psi | 85% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,824 psi | 88% | 3238 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,817 psi | 74% | 3255 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,706 psi | 85% | 3153 fps | 97% |
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 2495 | <<locked>> | 80% | 50,517 psi | 83% | 3028 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,283 psi | 79% | 3015 fps | 97% |
| Accurate 3100 | <<locked>> | 88% | 34,983 psi | 57% | 2805 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 47,819 psi | 79% | 3031 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,216 psi | 59% | 2864 fps | 97.2% |
| Accurate High Country | <<locked>> | 96% | 50,343 psi | 83% | 3261 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 45,049 psi | 74% | 2995 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 45,992 psi | 76% | 3091 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 50,299 psi | 83% | 3199 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,676 psi | 82% | 3225 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,180 psi | 76% | 3091 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,629 psi | 75% | 3025 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,747 psi | 80% | 3100 fps | 99.8% |
| Alliant Reloder-16 | 54.4 gr | 80% | 35,360 psi | 58% | 2871 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,074 psi | 66% | 3012 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,614 psi | 75% | 3081 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,948 psi | 75% | 3133 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,615 psi | 45% | 2654 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,694 psi | 59% | 2910 fps | 95.8% |
| Alliant Reloder-26 | 64.6 gr | 86% | 34,214 psi | 56% | 2917 fps | 96.1% |
| Bofors RP15 | <<locked>> | 98% | 45,063 psi | 74% | 3114 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 45,876 psi | 75% | 3035 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 45,948 psi | 75% | 3133 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 40,509 psi | 67% | 2887 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 46,296 psi | 76% | 3045 fps | 99% |
| Hodgdon H414 | <<locked>> | 82% | 40,973 psi | 67% | 2979 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 82% | 43,976 psi | 72% | 3002 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,982 psi | 54% | 2759 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,488 psi | 83% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,089 psi | 66% | 2986 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 44% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,358 psi | 84% | 3117 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,369 psi | 78% | 3031 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,719 psi | 82% | 3061 fps | 98% |
| IMR 4350 | <<locked>> | 84% | 41,162 psi | 68% | 2923 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,800 psi | 69% | 2920 fps | 96% |
| IMR 4831 | <<locked>> | 80% | 34,853 psi | 57% | 2812 fps | 96.8% |
| IMR 4895 | <<locked>> | 80% | 49,995 psi | 82% | 3130 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,776 psi | 78% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,436 psi | 65% | 2867 fps | 96.8% |
| Lovex S070 | <<locked>> | 80% | 37,623 psi | 62% | 2841 fps | 95% |
| Lovex S071 | <<locked>> | 94% | 36,042 psi | 59% | 2831 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 48,095 psi | 79% | 3084 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 46,789 psi | 77% | 3084 fps | 95.5% |
| Norma MRP | 65.6 gr | 90% | 39,407 psi | 65% | 3015 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 36,114 psi | 59% | 2861 fps | 97% |
| Ramshot Big Game | <<locked>> | 80% | 48,298 psi | 79% | 3104 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 37,420 psi | 61% | 2900 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 98% | 42,830 psi | 70% | 3038 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,514 psi | 45% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,267 psi | 76% | 3022 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,627 psi | 70% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,013 psi | 59% | 2881 fps | 96.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,070 psi | 58% | 2877 fps | 95.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,537 psi | 65% | 3041 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,559 psi | 81% | 3051 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,192 psi | 71% | 2976 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 50,763 psi | 83% | 3127 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 44,599 psi | 73% | 3061 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 40,509 psi | 67% | 2887 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,436 psi | 65% | 2867 fps | 96.8% |
| Shooters World Precision | <<locked>> | 80% | 47,776 psi | 78% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,623 psi | 62% | 2841 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,237 psi | 73% | 3031 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,677 psi | 85% | 3127 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,454 psi | 73% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,566 psi | 63% | 2802 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,208 psi | 73% | 3054 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 43,569 psi | 72% | 2976 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 32,605 psi | 54% | 2808 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 42,482 psi | 70% | 2982 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 49,530 psi | 81% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,951 psi | 82% | 3025 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,582 psi | 68% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,507 psi | 62% | 2861 fps | 97.4% |
| Vihtavuori N165 | <<locked>> | 94% | 41,800 psi | 69% | 2953 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 48,298 psi | 79% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,014 psi | 61% | 2858 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 30,443 psi | 50% | 2743 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,753 psi | 60% | 2825 fps | 99.1% |
| Winchester 760 | <<locked>> | 80% | 38,305 psi | 63% | 2913 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,876 psi | 46% | 2749 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,049 psi | 74% | 3025 fps | 95.3% |
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 | 125gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 3,346 fps; across all powders the maximum-charge window runs from 2,024 fps to 3,346 fps. Accurate 3100 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 59–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Alliant Reloder-16 rank at the top here: for 7 mm Blaser Mag. with the .284 | 125gr | Lehigh Defense Controlled Chaos 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.