Load Specifications
Load data in caliber 7 mm STW with .284 | 132gr | Peregrine VLR-4 bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, IMR 7828 SSC 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 59,234 psi | 89% | 3110 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 60,278 psi | 90% | 3156 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 58,320 psi | 87% | 3212 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 57,116 psi | 86% | 3064 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,696 psi | 86% | 3156 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 59,669 psi | 89% | 3222 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,821 psi | 75% | 3038 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,382 psi | 67% | 2989 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,841 psi | 87% | 3150 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 58,581 psi | 88% | 3087 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,551 psi | 86% | 3163 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 58,813 psi | 88% | 3176 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,116 psi | 86% | 3143 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 59,509 psi | 89% | 3212 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,579 psi | 85% | 3123 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,246 psi | 84% | 3179 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,609 psi | 86% | 3215 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,537 psi | 86% | 3114 fps | 96% |
| Bofors RP15 | <<locked>> | 98% | 58,363 psi | 87% | 3192 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 59,799 psi | 90% | 3104 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,257 psi | 78% | 3114 fps | 98.2% |
| Bofors RP5 | <<locked>> | 96% | 59,509 psi | 89% | 3212 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 58,610 psi | 88% | 3100 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,230 psi | 83% | 3136 fps | 99% |
| Hodgdon H380 | <<locked>> | 82% | 59,843 psi | 90% | 3127 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 58,204 psi | 87% | 3156 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,000 psi | 85% | 3110 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 59,248 psi | 89% | 3153 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,001 psi | 87% | 3133 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,740 psi | 87% | 3077 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,100 psi | 83% | 3251 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 59,538 psi | 89% | 3196 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 55% | 2005 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 60,133 psi | 90% | 3100 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,797 psi | 85% | 3081 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 60,336 psi | 90% | 3130 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,855 psi | 85% | 3091 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 60,017 psi | 90% | 3136 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 57,305 psi | 86% | 3196 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 57,145 psi | 86% | 3068 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 59,074 psi | 89% | 3117 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,492 psi | 85% | 3074 fps | 100% |
| Norma 204 | <<locked>> | 88% | 58,305 psi | 87% | 3143 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 39,711 psi | 60% | 2897 fps | 96.9% |
| Norma MRP | <<locked>> | 94% | 59,524 psi | 89% | 3235 fps | 100% |
| Norma URP | <<locked>> | 88% | 58,668 psi | 88% | 3140 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,233 psi | 87% | 3215 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 57,754 psi | 87% | 3143 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,956 psi | 85% | 3143 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 56% | 2051 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 59,466 psi | 89% | 3110 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 58,378 psi | 88% | 3163 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,492 psi | 85% | 3117 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 59,451 psi | 89% | 3212 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,362 psi | 84% | 3248 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,314 psi | 77% | 3117 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 84% | 59,930 psi | 90% | 3100 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 58,639 psi | 88% | 3123 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 56,478 psi | 85% | 3127 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 58,610 psi | 88% | 3100 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,145 psi | 86% | 3068 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 59,074 psi | 89% | 3117 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,972 psi | 87% | 3107 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 59,712 psi | 90% | 2969 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 60,365 psi | 90% | 3074 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 59,973 psi | 90% | 3186 fps | 99.6% |
| Somchem S355 | <<locked>> | 84% | 59,524 psi | 89% | 3097 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,695 psi | 85% | 3051 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 59,408 psi | 89% | 3140 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,014 psi | 85% | 3097 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 57,174 psi | 86% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,608 psi | 85% | 3074 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,710 psi | 85% | 3077 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 59,727 psi | 90% | 3133 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 58,682 psi | 88% | 3153 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 59,263 psi | 89% | 3228 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 59,248 psi | 89% | 3202 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,040 psi | 78% | 3123 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,492 psi | 85% | 3025 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 58,450 psi | 88% | 3159 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 59,277 psi | 89% | 3264 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,159 psi | 86% | 3094 fps | 99.2% |
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% | 33,576 psi | 50% | 2625 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 45,411 psi | 68% | 2913 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 46,702 psi | 70% | 3002 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 53,577 psi | 80% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 40,770 psi | 61% | 2838 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 88% | 44,860 psi | 67% | 2953 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 43,323 psi | 65% | 2904 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 94% | 36,100 psi | 54% | 2785 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 41,234 psi | 62% | 2838 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,911 psi | 82% | 3035 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,642 psi | 65% | 2923 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,850 psi | 76% | 3051 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 40,799 psi | 61% | 2831 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,957 psi | 58% | 2822 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,387 psi | 49% | 2661 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 32,314 psi | 48% | 2677 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,723 psi | 54% | 2799 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,766 psi | 81% | 3048 fps | 95% |
| Bofors RP15 | <<locked>> | 88% | 41,553 psi | 62% | 2881 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 55,738 psi | 84% | 3048 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 42,090 psi | 63% | 2913 fps | 95.5% |
| Bofors RP5 | <<locked>> | 84% | 38,957 psi | 58% | 2822 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 48,196 psi | 72% | 2923 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 92% | 41,350 psi | 62% | 2864 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 55,840 psi | 84% | 3064 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 47,340 psi | 71% | 2969 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 49,864 psi | 75% | 2986 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 48,109 psi | 72% | 2963 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 47,094 psi | 71% | 2943 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,075 psi | 62% | 2802 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,754 psi | 58% | 2897 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 47,340 psi | 71% | 2989 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 41% | 1798 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 56,333 psi | 84% | 3045 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,830 psi | 66% | 2851 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,850 psi | 75% | 2956 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 43,279 psi | 65% | 2858 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 46,238 psi | 69% | 2897 fps | 95.6% |
| IMR 7828 SSC | 71.7 gr | 88% | 43,004 psi | 64% | 2920 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,079 psi | 71% | 2897 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 45,411 psi | 68% | 2884 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 32,967 psi | 49% | 2608 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 44,005 psi | 66% | 2884 fps | 96.5% |
| Norma 217 | <<locked>> | 98% | 36,985 psi | 55% | 2828 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 35,491 psi | 53% | 2762 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 44,672 psi | 67% | 2904 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 42,946 psi | 64% | 2930 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 43,801 psi | 66% | 2897 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 38,406 psi | 58% | 2799 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 42% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 55,564 psi | 83% | 3051 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 54,186 psi | 81% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,585 psi | 68% | 2933 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,077 psi | 66% | 2953 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,737 psi | 54% | 2802 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 47,253 psi | 71% | 3038 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 52,431 psi | 79% | 2989 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 44,991 psi | 67% | 2877 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 82% | 40,045 psi | 60% | 2815 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,196 psi | 72% | 2923 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,079 psi | 71% | 2897 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 45,411 psi | 68% | 2884 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,331 psi | 81% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,591 psi | 79% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,224 psi | 69% | 2844 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 39,697 psi | 60% | 2808 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 52,257 psi | 78% | 2986 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 46,093 psi | 69% | 2864 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 41,727 psi | 63% | 2858 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,739 psi | 57% | 2730 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,096 psi | 75% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,137 psi | 69% | 2900 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 37,608 psi | 56% | 2717 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 45,498 psi | 68% | 2900 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 36,376 psi | 55% | 2743 fps | 98.8% |
| Vihtavuori N560 | 74.5 gr | 88% | 47,703 psi | 72% | 3022 fps | 96% |
| Vihtavuori N565 | <<locked>> | 92% | 44,527 psi | 67% | 2936 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 48,269 psi | 72% | 3051 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,643 psi | 68% | 2858 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,543 psi | 71% | 2969 fps | 98.8% |
| Winchester StaBALL HD | 67.1 gr | 80% | 28,805 psi | 43% | 2654 fps | 98.8% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,900 psi | 60% | 2776 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 82 powders for 7 mm STW loaded with the .284 | 132gr | Peregrine VLR-4. Winchester StaBALL HD delivers the highest muzzle velocity at 3,264 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,264 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 132.0 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, IMR 7828 SSC, Vihtavuori N560 rank at the top here: for 7 mm STW with the .284 | 132gr | 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.