Load Specifications
Load data in caliber 7 mm STW with .284 | 150gr | RWS Speed Tip Professional bullet and 73 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 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 57,667 psi | 86% | 2930 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 58,378 psi | 88% | 2959 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,608 psi | 85% | 3028 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 59,248 psi | 89% | 3022 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 57,319 psi | 86% | 3028 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,622 psi | 83% | 2995 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,111 psi | 75% | 2953 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 59,422 psi | 89% | 3015 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 59,277 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,711 psi | 88% | 3005 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,580 psi | 86% | 3022 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 59,219 psi | 89% | 2989 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 59,059 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,999 psi | 84% | 3022 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,011 psi | 79% | 3005 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,334 psi | 87% | 2982 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 56,753 psi | 85% | 3009 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 59,016 psi | 88% | 3064 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 57,580 psi | 86% | 3022 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 59,872 psi | 90% | 2959 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,261 psi | 86% | 3018 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 59,930 psi | 90% | 3015 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 58,247 psi | 87% | 2969 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 56,956 psi | 85% | 2966 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 59,625 psi | 89% | 3005 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 59,480 psi | 89% | 2930 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 58,044 psi | 87% | 3136 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,913 psi | 85% | 2992 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,333 psi | 56% | 1890 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,320 psi | 87% | 2946 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,450 psi | 86% | 2927 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 58,726 psi | 88% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,450 psi | 86% | 2946 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 59,567 psi | 89% | 3071 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,571 psi | 68% | 2858 fps | 97.7% |
| Lovex S065 | <<locked>> | 84% | 58,581 psi | 88% | 2927 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,840 psi | 85% | 2923 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 59,117 psi | 89% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 86% | 59,712 psi | 90% | 3005 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 46,021 psi | 69% | 2881 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 57,885 psi | 87% | 3045 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,579 psi | 85% | 2940 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,507 psi | 85% | 3028 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 59,422 psi | 89% | 3002 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 59,393 psi | 89% | 3022 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,174 psi | 57% | 1932 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,784 psi | 88% | 2982 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,087 psi | 86% | 3009 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 59,234 psi | 89% | 3133 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 58,798 psi | 88% | 3091 fps | 99% |
| Rottweil R 904 | <<locked>> | 90% | 60,060 psi | 90% | 2989 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 58,508 psi | 88% | 2999 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 59,872 psi | 90% | 2959 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 58,581 psi | 88% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,840 psi | 85% | 2923 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,696 psi | 86% | 2881 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 58,073 psi | 87% | 2995 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 57,986 psi | 87% | 2920 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 57,740 psi | 87% | 2943 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,856 psi | 88% | 2966 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 58,523 psi | 88% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,175 psi | 87% | 2930 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,610 psi | 88% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 57,479 psi | 86% | 2936 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,435 psi | 86% | 2966 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,406 psi | 86% | 3041 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 57,711 psi | 87% | 3022 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 59,219 psi | 89% | 3091 fps | 98.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,883 psi | 84% | 3077 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,015 psi | 87% | 2881 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 60,191 psi | 90% | 3018 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 58,552 psi | 88% | 3077 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,972 psi | 88% | 2966 fps | 99.8% |
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% | 38,363 psi | 57% | 2598 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 50,952 psi | 76% | 2851 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 42,525 psi | 64% | 2769 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 42,395 psi | 64% | 2726 fps | 97.5% |
| ADI AR 2213 | <<locked>> | 82% | 40,524 psi | 61% | 2717 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 39,552 psi | 59% | 2687 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 86% | 31,314 psi | 47% | 2523 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,757 psi | 64% | 2726 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,791 psi | 73% | 2854 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,351 psi | 63% | 2720 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,290 psi | 57% | 2661 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,956 psi | 55% | 2621 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,039 psi | 48% | 2536 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,263 psi | 62% | 2769 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 48,965 psi | 73% | 2933 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,457 psi | 73% | 2808 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 35,621 psi | 53% | 2595 fps | 95.1% |
| Bofors RP30 | <<locked>> | 88% | 38,943 psi | 58% | 2700 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 38,290 psi | 57% | 2661 fps | 96.4% |
| Bofors RP7 | <<locked>> | 80% | 52,678 psi | 79% | 2848 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 37,623 psi | 56% | 2644 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 52,446 psi | 79% | 2900 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 54,621 psi | 82% | 2913 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 43,352 psi | 65% | 2723 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 42,453 psi | 64% | 2703 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,818 psi | 69% | 2733 fps | 100% |
| Hodgdon Retumbo | 67.7 gr | 84% | 35,810 psi | 54% | 2684 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 52,808 psi | 79% | 2930 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 42% | 1693 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,182 psi | 72% | 2782 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,143 psi | 81% | 2874 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 48,211 psi | 72% | 2792 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,901 psi | 63% | 2664 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 82% | 39,146 psi | 59% | 2694 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 39,755 psi | 60% | 2733 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 51,590 psi | 77% | 2818 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,024 psi | 75% | 2812 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 33,011 psi | 49% | 2470 fps | 97.1% |
| Norma 204 | <<locked>> | 80% | 48,573 psi | 73% | 2825 fps | 98.7% |
| Norma 217 | <<locked>> | 90% | 32,445 psi | 49% | 2575 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 40,379 psi | 61% | 2733 fps | 98.3% |
| Norma URP | <<locked>> | 80% | 49,588 psi | 74% | 2831 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 38,972 psi | 58% | 2700 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 48,544 psi | 73% | 2831 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 34,983 psi | 52% | 2579 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,631 psi | 43% | 1732 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,126 psi | 77% | 2871 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,371 psi | 74% | 2890 fps | 100% |
| ReloadSwiss RS 76 | 70.7 gr | 82% | 32,619 psi | 49% | 2589 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 43,033 psi | 65% | 2815 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 43,482 psi | 65% | 2703 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 80% | 41,771 psi | 63% | 2707 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 80% | 52,678 psi | 79% | 2848 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,590 psi | 77% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,024 psi | 75% | 2812 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,691 psi | 76% | 2772 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,423 psi | 62% | 2700 fps | 97.4% |
| Somchem S361 | <<locked>> | 80% | 44,382 psi | 67% | 2690 fps | 96.2% |
| Somchem S365 | <<locked>> | 80% | 47,094 psi | 71% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,351 psi | 63% | 2687 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 80% | 54,868 psi | 82% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,024 psi | 76% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,782 psi | 55% | 2559 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 80% | 50,415 psi | 76% | 2828 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,452 psi | 62% | 2703 fps | 100% |
| Vihtavuori N560 | 66.9 gr | 80% | 40,321 psi | 60% | 2723 fps | 95% |
| Vihtavuori N565 | <<locked>> | 86% | 41,017 psi | 61% | 2720 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 92% | 44,324 psi | 66% | 2828 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 98% | 52,083 psi | 78% | 3012 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,386 psi | 76% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,649 psi | 79% | 2904 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,852 psi | 51% | 2654 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,899 psi | 58% | 2615 fps | 96.5% |
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 73 powders for 7 mm STW loaded with the .284 | 150gr | RWS Speed Tip Professional. Hodgdon Retumbo delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,136 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 150.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, Vihtavuori N560 rank at the top here: for 7 mm STW with the .284 | 150gr | RWS Speed Tip Professional 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.