Load Specifications
Load data in caliber 7 mm STW with .284 | 162gr | RWS ID Classic bullet and 66 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and ReloadSwiss RS 76.
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>> | 90% | 59,843 psi | 90% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 60,336 psi | 90% | 2890 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 58,958 psi | 88% | 2979 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 86% | 57,232 psi | 86% | 2904 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 59,770 psi | 90% | 2979 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 58,160 psi | 87% | 2949 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 54,592 psi | 82% | 2992 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,797 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,508 psi | 86% | 2890 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,826 psi | 85% | 2890 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 60,118 psi | 90% | 2969 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,914 psi | 87% | 2874 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 58,334 psi | 87% | 2946 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,958 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 56,449 psi | 85% | 2979 fps | 98% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 51,779 psi | 78% | 2894 fps | 96.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 60,089 psi | 90% | 2933 fps | 98.6% |
| Bofors RP15 | <<locked>> | 92% | 59,248 psi | 89% | 2956 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 58,146 psi | 87% | 2963 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 60,118 psi | 90% | 2969 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 59,872 psi | 90% | 2969 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 58,813 psi | 88% | 2910 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,624 psi | 86% | 2890 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,450 psi | 86% | 2812 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 57,290 psi | 86% | 3031 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,608 psi | 56% | 1844 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 59,654 psi | 89% | 2877 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 56,565 psi | 85% | 2828 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,958 psi | 88% | 2884 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 58,030 psi | 87% | 2956 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,199 psi | 78% | 2884 fps | 99.5% |
| Lovex S065 | <<locked>> | 82% | 59,654 psi | 89% | 2851 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 58,059 psi | 87% | 2854 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,740 psi | 87% | 2841 fps | 100% |
| Norma 204 | <<locked>> | 82% | 57,159 psi | 86% | 2881 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 53,171 psi | 80% | 2910 fps | 100% |
| Norma MRP | <<locked>> | 88% | 60,365 psi | 90% | 2986 fps | 100% |
| Norma URP | <<locked>> | 82% | 58,102 psi | 87% | 2871 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 59,538 psi | 89% | 2982 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 57,159 psi | 86% | 2877 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,870 psi | 87% | 2910 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,667 psi | 58% | 1890 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 59,161 psi | 89% | 2940 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 58,581 psi | 88% | 3022 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 57,870 psi | 87% | 2989 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 86% | 57,856 psi | 87% | 2874 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 56,695 psi | 85% | 2884 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,654 psi | 89% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 58,059 psi | 87% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,523 psi | 88% | 2808 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 60,031 psi | 90% | 2936 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 59,422 psi | 89% | 2864 fps | 99.6% |
| Somchem S365 | <<locked>> | 84% | 59,886 psi | 90% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,014 psi | 85% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 59,756 psi | 90% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,797 psi | 85% | 2838 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 59,886 psi | 90% | 2917 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 82% | 59,045 psi | 89% | 2864 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 59,785 psi | 90% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 59,741 psi | 90% | 2992 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 56,594 psi | 85% | 2920 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 96% | 58,233 psi | 87% | 2986 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 59,509 psi | 89% | 3048 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 59,350 psi | 89% | 2808 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 58,233 psi | 87% | 2963 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,942 psi | 85% | 2851 fps | 100% |
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% | 42,844 psi | 64% | 2605 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 56,318 psi | 84% | 2835 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 44,411 psi | 67% | 2726 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 80% | 46,775 psi | 70% | 2730 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 42,047 psi | 63% | 2671 fps | 97.3% |
| ADI AR 2217 | <<locked>> | 84% | 35,998 psi | 54% | 2533 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 96% | 47,210 psi | 71% | 2851 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 80% | 28,819 psi | 43% | 2379 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,896 psi | 81% | 2841 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,746 psi | 70% | 2726 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,801 psi | 64% | 2677 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,524 psi | 62% | 2621 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,897 psi | 54% | 2556 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,079 psi | 71% | 2785 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 48,341 psi | 72% | 2841 fps | 96.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 48,037 psi | 72% | 2825 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 46,354 psi | 69% | 2700 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 39,914 psi | 60% | 2615 fps | 97.7% |
| Bofors RP30 | <<locked>> | 82% | 35,984 psi | 54% | 2549 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 42,801 psi | 64% | 2677 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 80% | 34,026 psi | 51% | 2484 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 80% | 44,759 psi | 67% | 2674 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,874 psi | 66% | 2657 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,546 psi | 76% | 2717 fps | 100% |
| Hodgdon Retumbo | 67.2 gr | 80% | 35,157 psi | 53% | 2595 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 42% | 1650 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,388 psi | 79% | 2772 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,127 psi | 80% | 2779 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,658 psi | 68% | 2664 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 40,843 psi | 61% | 2654 fps | 97% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,592 psi | 52% | 2530 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 55,941 psi | 84% | 2799 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 54,607 psi | 82% | 2802 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 36,970 psi | 55% | 2487 fps | 99% |
| Norma 204 | <<locked>> | 80% | 53,476 psi | 80% | 2825 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 30,356 psi | 46% | 2438 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 45,469 psi | 68% | 2749 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 54,549 psi | 82% | 2818 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,828 psi | 61% | 2664 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 80% | 53,563 psi | 80% | 2825 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,782 psi | 55% | 2543 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,935 psi | 43% | 1690 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 55,216 psi | 83% | 2884 fps | 100% |
| ReloadSwiss RS 76 | 71.9 gr | 80% | 34,418 psi | 52% | 2566 fps | 98.1% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 39,421 psi | 59% | 2651 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 47,747 psi | 72% | 2707 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 46,383 psi | 70% | 2717 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 55,941 psi | 84% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 54,607 psi | 82% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,824 psi | 82% | 2756 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,035 psi | 69% | 2710 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 48,747 psi | 73% | 2697 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 52,214 psi | 78% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,775 psi | 70% | 2690 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 55,927 psi | 84% | 2808 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 40,901 psi | 61% | 2572 fps | 98.6% |
| Vihtavuori N170 | <<locked>> | 92% | 52,489 psi | 79% | 2799 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 55,114 psi | 83% | 2812 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 46,180 psi | 69% | 2700 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,165 psi | 68% | 2740 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 80% | 37,521 psi | 56% | 2559 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 86% | 40,582 psi | 61% | 2667 fps | 95.2% |
| Vihtavuori N570 | 80.2 gr | 92% | 47,950 psi | 72% | 2851 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 55,390 psi | 83% | 2756 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,711 psi | 60% | 2677 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,076 psi | 65% | 2621 fps | 98.6% |
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 66 powders for 7 mm STW loaded with the .284 | 162gr | RWS ID Classic. Vihtavuori N570 delivers the highest muzzle velocity at 3,048 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,048 fps. ADI AR 2218 gives the best case fill at 100 %, and 66 of the 66 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 162.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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, Vihtavuori N570, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 162gr | RWS ID Classic 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.