Load Specifications
Load data in caliber 7 mm STW with .284 | 154gr | Reichenberg HDB Universal 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>> | 92% | 59,843 psi | 90% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,289 psi | 84% | 2897 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 58,595 psi | 88% | 3031 fps | 99% |
| ADI AR 2209 | <<locked>> | 88% | 57,290 psi | 86% | 2963 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 59,567 psi | 89% | 3031 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 57,812 psi | 87% | 2999 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,199 psi | 78% | 2959 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 57,479 psi | 86% | 2959 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,493 psi | 86% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,869 psi | 85% | 2949 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 59,828 psi | 90% | 3025 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,406 psi | 86% | 2933 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 57,537 psi | 86% | 3002 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 58,479 psi | 88% | 3025 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,303 psi | 83% | 3018 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 60,133 psi | 90% | 2986 fps | 98.1% |
| Bofors RP15 | <<locked>> | 94% | 58,958 psi | 88% | 3012 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 57,232 psi | 86% | 3009 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 59,828 psi | 90% | 3025 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,682 psi | 86% | 2897 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 59,466 psi | 89% | 3022 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,870 psi | 87% | 2953 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 60,060 psi | 90% | 2966 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 58,784 psi | 88% | 2963 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 57,609 psi | 86% | 2946 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,609 psi | 86% | 2874 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 56,275 psi | 84% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,885 psi | 88% | 2992 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 56% | 1873 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 59,828 psi | 90% | 2940 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,900 psi | 88% | 2917 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,652 psi | 85% | 2890 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 59,117 psi | 89% | 2943 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 57,638 psi | 86% | 3012 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,674 psi | 71% | 2867 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 60,089 psi | 90% | 2917 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,392 psi | 88% | 2917 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,435 psi | 86% | 2897 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,522 psi | 86% | 2943 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 48,283 psi | 72% | 2890 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 59,944 psi | 90% | 3041 fps | 100% |
| Norma URP | <<locked>> | 84% | 58,233 psi | 87% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 59,030 psi | 88% | 3035 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 57,348 psi | 86% | 2940 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 57,305 psi | 86% | 2963 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,406 psi | 58% | 1919 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,565 psi | 85% | 2920 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 59,190 psi | 89% | 3002 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 57,392 psi | 86% | 3074 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 56,898 psi | 85% | 3031 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 58,073 psi | 87% | 2933 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 56,637 psi | 85% | 2943 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 57,682 psi | 86% | 2897 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 60,089 psi | 90% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,392 psi | 88% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 59,146 psi | 89% | 2871 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 60,060 psi | 90% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 59,857 psi | 90% | 2923 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 59,640 psi | 89% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,043 psi | 86% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 60,089 psi | 90% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 60,060 psi | 90% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,913 psi | 85% | 2897 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 59,872 psi | 90% | 2966 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 84% | 59,103 psi | 89% | 2927 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 59,524 psi | 89% | 2963 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 59,422 psi | 89% | 3041 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 96% | 59,959 psi | 90% | 3028 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 57,319 psi | 86% | 3031 fps | 98.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 58,523 psi | 88% | 3094 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 59,799 psi | 90% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 58,117 psi | 87% | 2959 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 56,971 psi | 85% | 3018 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,913 psi | 85% | 2907 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% | 39,784 psi | 60% | 2598 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 52,663 psi | 79% | 2844 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 41,046 psi | 62% | 2710 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 43,845 psi | 66% | 2730 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 80% | 39,146 psi | 59% | 2657 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 88% | 38,174 psi | 57% | 2631 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 84% | 30,385 psi | 46% | 2470 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,164 psi | 66% | 2726 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,270 psi | 75% | 2848 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,758 psi | 66% | 2720 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,711 psi | 60% | 2667 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,450 psi | 58% | 2621 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,272 psi | 50% | 2546 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,207 psi | 65% | 2779 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 47,485 psi | 71% | 2881 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 46,746 psi | 70% | 2756 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 36,970 psi | 55% | 2605 fps | 96.1% |
| Bofors RP30 | <<locked>> | 86% | 37,927 psi | 57% | 2648 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 39,711 psi | 60% | 2667 fps | 97.2% |
| Bofors RP7 | <<locked>> | 80% | 54,114 psi | 81% | 2844 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 36,332 psi | 54% | 2592 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 54,027 psi | 81% | 2897 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 56,188 psi | 84% | 2910 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 41,684 psi | 62% | 2664 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,988 psi | 61% | 2648 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,413 psi | 71% | 2726 fps | 100% |
| Hodgdon Retumbo | 66.9 gr | 82% | 34,737 psi | 52% | 2631 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 54,723 psi | 82% | 2930 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 42% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,588 psi | 74% | 2779 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 55,361 psi | 83% | 2864 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,777 psi | 75% | 2785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,134 psi | 65% | 2664 fps | 96.4% |
| IMR 7828 SSC | <<locked>> | 80% | 37,884 psi | 57% | 2638 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 94% | 38,725 psi | 58% | 2687 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 53,055 psi | 80% | 2815 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,503 psi | 77% | 2812 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 34,301 psi | 51% | 2477 fps | 97.8% |
| Norma 204 | <<locked>> | 80% | 50,082 psi | 75% | 2825 fps | 99.1% |
| Norma 217 | <<locked>> | 88% | 31,691 psi | 48% | 2530 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 41,945 psi | 63% | 2736 fps | 98.9% |
| Norma URP | <<locked>> | 80% | 51,155 psi | 77% | 2825 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,681 psi | 56% | 2644 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 50,053 psi | 75% | 2828 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,736 psi | 51% | 2523 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 43% | 1719 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,765 psi | 79% | 2864 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,314 psi | 77% | 2890 fps | 100% |
| ReloadSwiss RS 76 | 69.9 gr | 80% | 31,662 psi | 47% | 2536 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 41,684 psi | 62% | 2756 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 44,831 psi | 67% | 2703 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 80% | 43,236 psi | 65% | 2710 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 54,114 psi | 81% | 2844 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,055 psi | 80% | 2815 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,503 psi | 77% | 2812 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,054 psi | 78% | 2766 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,888 psi | 64% | 2703 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 45,847 psi | 69% | 2694 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 48,762 psi | 73% | 2782 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,758 psi | 66% | 2687 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 80% | 56,405 psi | 85% | 2802 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 52,591 psi | 79% | 2818 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,072 psi | 57% | 2562 fps | 97.3% |
| Vihtavuori N170 | <<locked>> | 96% | 55,883 psi | 84% | 2900 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 51,909 psi | 78% | 2822 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,815 psi | 64% | 2697 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,814 psi | 63% | 2726 fps | 96% |
| Vihtavuori N565 | <<locked>> | 84% | 39,755 psi | 60% | 2664 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 90% | 42,975 psi | 64% | 2772 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 96% | 50,546 psi | 76% | 2956 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,083 psi | 78% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 54,273 psi | 81% | 2897 fps | 100% |
| Winchester StaBALL HD | 67 gr | 80% | 35,679 psi | 53% | 2661 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,205 psi | 60% | 2615 fps | 97.3% |
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 74 powders for 7 mm STW loaded with the .284 | 154gr | Reichenberg HDB Universal. Vihtavuori N570 delivers the highest muzzle velocity at 3,094 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,094 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 154.0 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, Winchester StaBALL HD rank at the top here: for 7 mm STW with the .284 | 154gr | Reichenberg HDB Universal 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.