Load Specifications
Load data in caliber 7 mm STW with .284 | 150gr | Nosler Ballistic Tip Hunting bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H1000, Hodgdon Retumbo 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>> | 92% | 58,929 psi | 88% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,408 psi | 89% | 2972 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,841 psi | 87% | 3048 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 90% | 60,321 psi | 90% | 3038 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 58,610 psi | 88% | 3051 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,768 psi | 85% | 3012 fps | 99.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,227 psi | 77% | 2972 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 60,292 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 59,756 psi | 90% | 3025 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,900 psi | 88% | 3045 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 60,336 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,478 psi | 85% | 3018 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,421 psi | 86% | 3041 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,317 psi | 81% | 3031 fps | 96.6% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 59,466 psi | 89% | 3002 fps | 97.7% |
| Bofors RP15 | <<locked>> | 94% | 58,030 psi | 87% | 3031 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 60,307 psi | 90% | 3084 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 58,900 psi | 88% | 3045 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 57,072 psi | 86% | 2920 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,450 psi | 88% | 3038 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 57,087 psi | 86% | 2976 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,132 psi | 89% | 2986 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 57,943 psi | 87% | 2982 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,768 psi | 85% | 2963 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,855 psi | 85% | 2897 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 59,379 psi | 89% | 3159 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,001 psi | 87% | 3009 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,478 psi | 56% | 1900 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 59,132 psi | 89% | 2959 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,276 psi | 87% | 2940 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,596 psi | 89% | 2963 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,392 psi | 88% | 2963 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 92% | 56,666 psi | 85% | 3028 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,731 psi | 70% | 2877 fps | 98.1% |
| Lovex S065 | <<locked>> | 84% | 59,437 psi | 89% | 2940 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,711 psi | 87% | 2936 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 60,176 psi | 90% | 2966 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,724 psi | 85% | 2963 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 47,253 psi | 71% | 2904 fps | 99.6% |
| Norma MRP | <<locked>> | 90% | 58,972 psi | 88% | 3061 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,522 psi | 86% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,899 psi | 87% | 3051 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 56,579 psi | 85% | 2963 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,246 psi | 84% | 2976 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 57% | 1942 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,712 psi | 90% | 2995 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 58,262 psi | 87% | 3025 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,405 psi | 85% | 3091 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 60,249 psi | 90% | 3114 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 88% | 57,305 psi | 86% | 2953 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 59,625 psi | 89% | 3018 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 57,072 psi | 86% | 2920 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,437 psi | 89% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,711 psi | 87% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,508 psi | 88% | 2894 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 59,190 psi | 89% | 3015 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 59,059 psi | 89% | 2943 fps | 99.1% |
| Somchem S365 | <<locked>> | 86% | 58,740 psi | 88% | 2956 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 59,886 psi | 90% | 2986 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,437 psi | 89% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 59,088 psi | 89% | 2943 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 59,814 psi | 90% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 58,349 psi | 87% | 2949 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,610 psi | 88% | 2982 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,465 psi | 88% | 3061 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 58,929 psi | 88% | 3041 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 98% | 56,434 psi | 85% | 3048 fps | 98.3% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,305 psi | 86% | 3104 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,769 psi | 88% | 2894 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,087 psi | 86% | 2976 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 60,234 psi | 90% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 60,191 psi | 90% | 2986 fps | 99.9% |
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% | 39,218 psi | 59% | 2615 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 51,953 psi | 78% | 2867 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 43,337 psi | 65% | 2785 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 43,076 psi | 65% | 2743 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 80% | 38,609 psi | 58% | 2674 fps | 95% |
| ADI AR 2217 | <<locked>> | 88% | 37,594 psi | 56% | 2644 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 32,024 psi | 48% | 2543 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,603 psi | 74% | 2871 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,163 psi | 65% | 2736 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,117 psi | 59% | 2680 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,840 psi | 57% | 2641 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,619 psi | 49% | 2552 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,366 psi | 64% | 2792 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 50,212 psi | 75% | 2959 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 49,139 psi | 74% | 2828 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 36,405 psi | 55% | 2618 fps | 95.6% |
| Bofors RP30 | <<locked>> | 86% | 37,260 psi | 56% | 2657 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 39,117 psi | 59% | 2680 fps | 96.7% |
| Bofors RP7 | <<locked>> | 80% | 53,548 psi | 80% | 2864 fps | 99.8% |
| Hodgdon H1000 | 70.8 gr | 86% | 38,435 psi | 58% | 2667 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 80% | 53,359 psi | 80% | 2917 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 55,535 psi | 83% | 2930 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 41,118 psi | 62% | 2677 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,408 psi | 61% | 2664 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,760 psi | 70% | 2746 fps | 100% |
| Hodgdon Retumbo | 67.2 gr | 82% | 34,156 psi | 51% | 2641 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 53,853 psi | 81% | 2949 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 42% | 1703 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,791 psi | 73% | 2795 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,795 psi | 82% | 2887 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,153 psi | 74% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,467 psi | 64% | 2677 fps | 96% |
| IMR 7828 SSC | <<locked>> | 82% | 39,929 psi | 60% | 2713 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,971 psi | 57% | 2694 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 52,489 psi | 79% | 2835 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,879 psi | 76% | 2831 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 33,649 psi | 50% | 2487 fps | 97.4% |
| Norma 204 | <<locked>> | 80% | 49,414 psi | 74% | 2841 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 33,272 psi | 50% | 2595 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 41,234 psi | 62% | 2753 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 50,502 psi | 76% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 39,740 psi | 60% | 2720 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 49,400 psi | 74% | 2848 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 33,156 psi | 50% | 2533 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,732 psi | 43% | 1742 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,040 psi | 78% | 2887 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,299 psi | 75% | 2904 fps | 100% |
| ReloadSwiss RS 76 | 70.1 gr | 80% | 30,995 psi | 46% | 2539 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 44,106 psi | 66% | 2835 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 44,280 psi | 66% | 2723 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 42,627 psi | 64% | 2723 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 80% | 53,548 psi | 80% | 2864 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,489 psi | 79% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,879 psi | 76% | 2831 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,256 psi | 77% | 2782 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,293 psi | 63% | 2720 fps | 97.7% |
| Somchem S361 | <<locked>> | 80% | 45,078 psi | 68% | 2707 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 47,863 psi | 72% | 2799 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,149 psi | 65% | 2703 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 80% | 55,782 psi | 84% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,938 psi | 78% | 2841 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,536 psi | 56% | 2575 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 80% | 51,271 psi | 77% | 2841 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,177 psi | 63% | 2717 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,133 psi | 62% | 2740 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 84% | 39,102 psi | 59% | 2677 fps | 95% |
| Vihtavuori N568 | <<locked>> | 92% | 45,252 psi | 68% | 2848 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 98% | 53,243 psi | 80% | 3035 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,184 psi | 77% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,577 psi | 80% | 2920 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,853 psi | 52% | 2674 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,624 psi | 59% | 2631 fps | 96.9% |
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 72 powders for 7 mm STW loaded with the .284 | 150gr | Nosler Ballistic Tip Hunting. Hodgdon Retumbo delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 1,900 fps to 3,159 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 1:11.0 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 H1000, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 150gr | Nosler Ballistic Tip Hunting 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.