Load Specifications
Load data in caliber 7 mm STW with .284 | 140gr | Peregrine VRG-3 bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
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% | 60,162 psi | 90% | 3054 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,797 psi | 85% | 3031 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 59,437 psi | 89% | 3163 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 58,131 psi | 87% | 3097 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 56,347 psi | 84% | 3104 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,404 psi | 82% | 3061 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,907 psi | 73% | 3012 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 58,146 psi | 87% | 3091 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 59,451 psi | 89% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,754 psi | 87% | 3084 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,492 psi | 85% | 3094 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,885 psi | 87% | 3064 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,856 psi | 87% | 3127 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 58,900 psi | 88% | 3153 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,595 psi | 86% | 3054 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 59,364 psi | 89% | 3136 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,464 psi | 86% | 3127 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 56,492 psi | 85% | 3094 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 58,624 psi | 88% | 3035 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 56,202 psi | 84% | 3091 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 58,769 psi | 88% | 3091 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,217 psi | 86% | 3048 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 59,901 psi | 90% | 3097 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 58,697 psi | 88% | 3081 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 58,363 psi | 87% | 3012 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,681 psi | 85% | 3205 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 60,089 psi | 90% | 3130 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 56% | 1969 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,116 psi | 86% | 3018 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 60,234 psi | 90% | 3061 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,217 psi | 86% | 3022 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 60,249 psi | 90% | 3077 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 58,421 psi | 88% | 3143 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,193 psi | 66% | 2904 fps | 96.8% |
| Lovex S065 | <<locked>> | 84% | 57,261 psi | 86% | 3002 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 59,190 psi | 89% | 3051 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,522 psi | 86% | 3018 fps | 100% |
| Norma 204 | <<locked>> | 86% | 58,624 psi | 88% | 3081 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 44,701 psi | 67% | 2933 fps | 98.9% |
| Norma MRP | <<locked>> | 90% | 56,391 psi | 85% | 3114 fps | 100% |
| Norma URP | <<locked>> | 86% | 59,016 psi | 88% | 3068 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 59,770 psi | 90% | 3166 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 58,276 psi | 87% | 3077 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,015 psi | 87% | 3087 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,985 psi | 57% | 2011 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,261 psi | 86% | 3054 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 60,191 psi | 90% | 3146 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,030 psi | 87% | 3202 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,232 psi | 86% | 3150 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 82% | 60,263 psi | 90% | 3031 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 59,045 psi | 89% | 3064 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 57,246 psi | 86% | 3074 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 58,624 psi | 88% | 3035 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,261 psi | 86% | 3002 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 59,190 psi | 89% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 59,393 psi | 89% | 2894 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,507 psi | 85% | 2953 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,826 psi | 85% | 3068 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 59,741 psi | 90% | 3025 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,000 psi | 85% | 2995 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 60,278 psi | 90% | 3071 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,696 psi | 86% | 3041 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 57,319 psi | 86% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,956 psi | 85% | 3009 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,464 psi | 86% | 3022 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 60,147 psi | 90% | 3068 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 59,770 psi | 90% | 3091 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 60,292 psi | 90% | 3176 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 56,449 psi | 85% | 3091 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,769 psi | 87% | 3150 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,840 psi | 85% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 58,769 psi | 88% | 3091 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,101 psi | 86% | 3146 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,856 psi | 87% | 3038 fps | 99.6% |
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% | 36,883 psi | 55% | 2641 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 49,472 psi | 74% | 2917 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 44,382 psi | 67% | 2887 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 41,176 psi | 62% | 2785 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 84% | 42,351 psi | 63% | 2835 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 92% | 41,089 psi | 62% | 2799 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 88% | 32,285 psi | 48% | 2618 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,413 psi | 71% | 2923 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 55,434 psi | 83% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,249 psi | 62% | 2779 fps | 96.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,028 psi | 56% | 2710 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,636 psi | 53% | 2674 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,777 psi | 46% | 2572 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,827 psi | 60% | 2822 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,734 psi | 76% | 2936 fps | 95.2% |
| Bofors RP15 | <<locked>> | 82% | 36,869 psi | 55% | 2703 fps | 95% |
| Bofors RP30 | <<locked>> | 90% | 40,495 psi | 61% | 2808 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 37,028 psi | 56% | 2710 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 51,488 psi | 77% | 2920 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 39,160 psi | 59% | 2756 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 51,155 psi | 77% | 2969 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 53,563 psi | 80% | 2989 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 45,353 psi | 68% | 2848 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 84% | 44,411 psi | 67% | 2828 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,628 psi | 67% | 2799 fps | 100% |
| Hodgdon Retumbo | 72.5 gr | 86% | 37,072 psi | 56% | 2792 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 51,648 psi | 77% | 2999 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,789 psi | 42% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,978 psi | 70% | 2848 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,084 psi | 80% | 2949 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 46,775 psi | 70% | 2854 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 43,613 psi | 65% | 2782 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 40,727 psi | 61% | 2808 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 98% | 41,220 psi | 62% | 2841 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 50,372 psi | 76% | 2890 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 48,689 psi | 73% | 2877 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 31,459 psi | 47% | 2507 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 47,529 psi | 71% | 2890 fps | 98.1% |
| Norma 217 | <<locked>> | 92% | 33,446 psi | 50% | 2671 fps | 95% |
| Norma MRP | <<locked>> | 80% | 39,073 psi | 59% | 2785 fps | 97.4% |
| Norma URP | <<locked>> | 80% | 48,240 psi | 72% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,712 psi | 61% | 2818 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 47,413 psi | 71% | 2900 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 36,289 psi | 54% | 2687 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,355 psi | 43% | 1801 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,719 psi | 75% | 2936 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,022 psi | 72% | 2953 fps | 100% |
| ReloadSwiss RS 76 | 75.8 gr | 84% | 33,881 psi | 51% | 2694 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 45,092 psi | 68% | 2930 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 56,260 psi | 84% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 42,351 psi | 63% | 2762 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 40,611 psi | 61% | 2762 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 51,488 psi | 77% | 2920 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,372 psi | 76% | 2890 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 48,689 psi | 73% | 2877 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 55,738 psi | 84% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,313 psi | 74% | 2838 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,277 psi | 60% | 2756 fps | 96.5% |
| Somchem S355 | <<locked>> | 80% | 55,912 psi | 84% | 2972 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 43,178 psi | 65% | 2746 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 45,556 psi | 68% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,046 psi | 62% | 2743 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 53,577 psi | 80% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,864 psi | 75% | 2897 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,621 psi | 53% | 2608 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 49,110 psi | 74% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,885 psi | 60% | 2753 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 82% | 42,003 psi | 63% | 2838 fps | 95% |
| Vihtavuori N565 | <<locked>> | 88% | 42,540 psi | 64% | 2831 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 94% | 46,311 psi | 69% | 2946 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,327 psi | 74% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,358 psi | 77% | 2972 fps | 99.7% |
| Winchester StaBALL HD | 69.3 gr | 80% | 32,372 psi | 49% | 2690 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,623 psi | 56% | 2661 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 79 powders for 7 mm STW loaded with the .284 | 140gr | Peregrine VRG-3. Hodgdon Retumbo delivers the highest muzzle velocity at 3,205 fps; across all powders the maximum-charge window runs from 1,969 fps to 3,205 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 140.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 7 mm STW with the .284 | 140gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, IMR 7977 Enduron, Vihtavuori N170 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.