Load Specifications
Load data in caliber 7 mm STW with .284 | 136gr | Peregrine VLR-5 bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 56,579 psi | 85% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,537 psi | 86% | 3077 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 59,770 psi | 90% | 3202 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 82% | 58,117 psi | 87% | 3041 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 58,958 psi | 88% | 3140 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 56,724 psi | 85% | 3140 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,039 psi | 77% | 3031 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,527 psi | 68% | 2979 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 59,698 psi | 89% | 3064 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 58,827 psi | 88% | 3140 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 60,162 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 58,334 psi | 87% | 3127 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,710 psi | 85% | 3133 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,972 psi | 87% | 3104 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,740 psi | 87% | 3166 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 59,219 psi | 89% | 3199 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,566 psi | 88% | 3097 fps | 96.5% |
| Bofors RP15 | <<locked>> | 98% | 59,741 psi | 90% | 3176 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,679 psi | 80% | 3100 fps | 98.6% |
| Bofors RP5 | <<locked>> | 94% | 56,710 psi | 85% | 3133 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 59,669 psi | 89% | 3081 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,579 psi | 85% | 3127 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 86% | 59,422 psi | 89% | 3136 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 58,102 psi | 87% | 3094 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 56,565 psi | 85% | 3077 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 59,263 psi | 89% | 3120 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,987 psi | 88% | 3058 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,579 psi | 85% | 3241 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 56,478 psi | 85% | 3110 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 56% | 1978 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,885 psi | 87% | 3064 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,638 psi | 86% | 3051 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 58,059 psi | 87% | 3068 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,377 psi | 86% | 3061 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 58,726 psi | 88% | 3182 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 58,189 psi | 87% | 3048 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 60,205 psi | 90% | 3097 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,841 psi | 87% | 3058 fps | 100% |
| Norma 204 | <<locked>> | 88% | 59,524 psi | 89% | 3127 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 40,930 psi | 61% | 2894 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 56,753 psi | 85% | 3153 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 59,901 psi | 90% | 3120 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 59,814 psi | 90% | 3202 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 58,987 psi | 88% | 3123 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,537 psi | 88% | 3130 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 57% | 2024 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 59,770 psi | 90% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,798 psi | 87% | 3100 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,623 psi | 85% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,957 psi | 87% | 3238 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,910 psi | 79% | 3110 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 57,174 psi | 86% | 3022 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 59,799 psi | 90% | 3107 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 57,754 psi | 87% | 3114 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 59,669 psi | 89% | 3081 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,189 psi | 87% | 3048 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 60,205 psi | 90% | 3097 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 59,117 psi | 89% | 3084 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,855 psi | 85% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,609 psi | 86% | 2999 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,305 psi | 86% | 3110 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 56,855 psi | 85% | 3018 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,827 psi | 87% | 3035 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 56,579 psi | 85% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 58,247 psi | 87% | 3084 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 58,233 psi | 87% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,783 psi | 87% | 3051 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,972 psi | 87% | 3061 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 56,913 psi | 85% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 60,075 psi | 90% | 3133 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,478 psi | 85% | 3150 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 56,536 psi | 85% | 3123 fps | 98.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,534 psi | 80% | 3117 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,682 psi | 86% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 59,669 psi | 89% | 3140 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,739 psi | 85% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 58,436 psi | 88% | 3077 fps | 99.5% |
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 3100 | <<locked>> | 80% | 34,461 psi | 52% | 2615 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 46,485 psi | 70% | 2897 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 47,921 psi | 72% | 2992 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 54,520 psi | 82% | 2989 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,914 psi | 58% | 2762 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 86% | 42,844 psi | 64% | 2874 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 94% | 41,394 psi | 62% | 2831 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 34,621 psi | 52% | 2713 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 55,956 psi | 84% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,672 psi | 67% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,069 psi | 78% | 3035 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,841 psi | 58% | 2753 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 39,958 psi | 60% | 2815 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,257 psi | 50% | 2648 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,951 psi | 46% | 2605 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,796 psi | 55% | 2789 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,752 psi | 82% | 3031 fps | 95.6% |
| Bofors RP15 | <<locked>> | 86% | 39,595 psi | 59% | 2802 fps | 95.6% |
| Bofors RP30 | <<locked>> | 92% | 40,306 psi | 60% | 2841 fps | 95.2% |
| Bofors RP5 | <<locked>> | 84% | 39,958 psi | 60% | 2815 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 49,095 psi | 74% | 2907 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 90% | 39,508 psi | 59% | 2792 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 48,370 psi | 73% | 2949 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 50,850 psi | 76% | 2972 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 45,730 psi | 69% | 2881 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,962 psi | 67% | 2867 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,032 psi | 63% | 2785 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 37,144 psi | 56% | 2825 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 48,486 psi | 73% | 2976 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 41% | 1775 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,715 psi | 67% | 2835 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,749 psi | 76% | 2940 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 44,251 psi | 66% | 2841 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 44,193 psi | 66% | 2822 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 44,048 psi | 66% | 2913 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 47,979 psi | 72% | 2881 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 46,325 psi | 69% | 2867 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 31,502 psi | 47% | 2539 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 44,962 psi | 67% | 2874 fps | 97.1% |
| Norma 217 | <<locked>> | 96% | 35,505 psi | 53% | 2759 fps | 95.5% |
| Norma MRP | 67.8 gr | 80% | 36,463 psi | 55% | 2756 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 45,658 psi | 68% | 2887 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 40,872 psi | 61% | 2854 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 44,788 psi | 67% | 2881 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 36,535 psi | 55% | 2720 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 42% | 1814 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 55,535 psi | 83% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,688 psi | 70% | 2917 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,165 psi | 68% | 2936 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,968 psi | 51% | 2723 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,860 psi | 67% | 2959 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 53,490 psi | 80% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,946 psi | 64% | 2805 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 38,072 psi | 57% | 2736 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 49,095 psi | 74% | 2907 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,979 psi | 72% | 2881 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 46,325 psi | 69% | 2867 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 55,419 psi | 83% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,476 psi | 80% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,108 psi | 71% | 2828 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,739 psi | 57% | 2733 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 53,258 psi | 80% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,961 psi | 66% | 2789 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 42,801 psi | 64% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,609 psi | 58% | 2720 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 51,068 psi | 77% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,123 psi | 71% | 2884 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 35,955 psi | 54% | 2644 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 46,470 psi | 70% | 2881 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,333 psi | 56% | 2733 fps | 99.2% |
| Vihtavuori N560 | 72.8 gr | 86% | 45,469 psi | 68% | 2946 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 90% | 42,511 psi | 64% | 2861 fps | 95% |
| Vihtavuori N568 | <<locked>> | 98% | 49,647 psi | 74% | 3045 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,644 psi | 70% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,588 psi | 73% | 2956 fps | 99.2% |
| Winchester StaBALL HD | 67.1 gr | 80% | 29,602 psi | 44% | 2654 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 82% | 38,101 psi | 57% | 2703 fps | 95.2% |
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 77 powders for 7 mm STW loaded with the .284 | 136gr | Peregrine VLR-5. Hodgdon Retumbo delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,978 fps to 3,241 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 136.0 gr projectile in 0.284" calls for a 1:9.5 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, Vihtavuori N560, Norma MRP rank at the top here: for 7 mm STW with the .284 | 136gr | Peregrine VLR-5 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.