Load Specifications
Load data in caliber 7 mm STW with .284 | 150gr | Rhino Solid Shank bullet and 71 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 IMR 7828 SSC.
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% | 60,104 psi | 90% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,666 psi | 85% | 2936 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 59,176 psi | 89% | 3071 fps | 99% |
| ADI AR 2209 | <<locked>> | 88% | 57,667 psi | 86% | 2999 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 60,002 psi | 90% | 3071 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 58,247 psi | 87% | 3038 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,591 psi | 79% | 2995 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,812 psi | 87% | 2992 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,203 psi | 86% | 2989 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 60,263 psi | 90% | 3064 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,928 psi | 87% | 2972 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 57,885 psi | 87% | 3038 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 58,900 psi | 88% | 3061 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,927 psi | 84% | 3054 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 56,811 psi | 85% | 2966 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 59,379 psi | 89% | 3051 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 57,740 psi | 87% | 3045 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 60,263 psi | 90% | 3064 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 58,044 psi | 87% | 2936 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 59,973 psi | 90% | 3061 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 58,117 psi | 87% | 2989 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 60,336 psi | 90% | 3005 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 59,248 psi | 89% | 3005 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,088 psi | 87% | 2986 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,899 psi | 87% | 2913 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 56,855 psi | 85% | 3120 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 59,161 psi | 89% | 3028 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,463 psi | 56% | 1906 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 60,263 psi | 90% | 2979 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 59,263 psi | 89% | 2956 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,942 psi | 85% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 59,611 psi | 89% | 2982 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 58,102 psi | 87% | 3051 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,153 psi | 72% | 2904 fps | 98.4% |
| Lovex S065 | <<locked>> | 82% | 56,826 psi | 85% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,653 psi | 88% | 2953 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,711 psi | 87% | 2933 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,856 psi | 87% | 2982 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 48,820 psi | 73% | 2930 fps | 99.8% |
| Norma MRP | <<locked>> | 88% | 56,362 psi | 84% | 3022 fps | 100% |
| Norma URP | <<locked>> | 84% | 58,566 psi | 88% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 59,437 psi | 89% | 3074 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 57,740 psi | 87% | 2979 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 57,812 psi | 87% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,305 psi | 57% | 1949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,985 psi | 85% | 2959 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 59,538 psi | 89% | 3041 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,001 psi | 87% | 3110 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 57,392 psi | 86% | 3068 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 58,407 psi | 88% | 2969 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 57,014 psi | 85% | 2982 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 58,044 psi | 87% | 2936 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,826 psi | 85% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,653 psi | 88% | 2953 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 59,393 psi | 89% | 2907 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 60,365 psi | 90% | 3035 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 60,191 psi | 90% | 2963 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 60,118 psi | 90% | 2972 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,319 psi | 86% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 60,321 psi | 90% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,101 psi | 86% | 2930 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 59,524 psi | 89% | 2966 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 59,886 psi | 90% | 2999 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 59,799 psi | 90% | 3081 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 94% | 56,492 psi | 85% | 3005 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 98% | 57,914 psi | 87% | 3071 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 59,074 psi | 89% | 3130 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 60,060 psi | 90% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 58,334 psi | 87% | 2992 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 57,435 psi | 86% | 3054 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,363 psi | 86% | 2946 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% | 40,118 psi | 60% | 2635 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 53,069 psi | 80% | 2884 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 44,425 psi | 67% | 2808 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 44,019 psi | 66% | 2762 fps | 98% |
| ADI AR 2213 | <<locked>> | 80% | 39,450 psi | 59% | 2690 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 88% | 38,479 psi | 58% | 2664 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 84% | 30,676 psi | 46% | 2503 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,517 psi | 76% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,092 psi | 66% | 2759 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,030 psi | 60% | 2703 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,682 psi | 58% | 2654 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,431 psi | 50% | 2575 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,613 psi | 65% | 2815 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 51,750 psi | 78% | 2982 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 50,038 psi | 75% | 2848 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 37,144 psi | 56% | 2635 fps | 95.9% |
| Bofors RP30 | <<locked>> | 86% | 38,276 psi | 57% | 2680 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 40,030 psi | 60% | 2703 fps | 97.1% |
| Bofors RP7 | <<locked>> | 80% | 54,331 psi | 81% | 2881 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 36,651 psi | 55% | 2621 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 54,360 psi | 81% | 2933 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 56,521 psi | 85% | 2949 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 41,974 psi | 63% | 2697 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,278 psi | 62% | 2684 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,659 psi | 71% | 2762 fps | 100% |
| Hodgdon Retumbo | 68.5 gr | 82% | 34,969 psi | 52% | 2661 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 55,042 psi | 83% | 2966 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 42% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,734 psi | 75% | 2815 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 55,724 psi | 84% | 2904 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,966 psi | 75% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,308 psi | 65% | 2697 fps | 96.3% |
| IMR 7828 SSC | 66.8 gr | 80% | 38,174 psi | 57% | 2674 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 94% | 39,117 psi | 59% | 2720 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 53,243 psi | 80% | 2851 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,692 psi | 77% | 2844 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 34,534 psi | 52% | 2510 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 50,357 psi | 75% | 2861 fps | 99.1% |
| Norma 217 | <<locked>> | 88% | 32,010 psi | 48% | 2559 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 42,409 psi | 64% | 2776 fps | 98.8% |
| Norma URP | <<locked>> | 80% | 51,358 psi | 77% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,927 psi | 57% | 2677 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 50,343 psi | 75% | 2864 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,084 psi | 51% | 2556 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,732 psi | 43% | 1745 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,243 psi | 80% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,561 psi | 77% | 2927 fps | 100% |
| ReloadSwiss RS 76 | 71.5 gr | 80% | 31,792 psi | 48% | 2566 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 42,119 psi | 63% | 2792 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 45,005 psi | 67% | 2740 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 80% | 43,584 psi | 65% | 2746 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 80% | 54,331 psi | 81% | 2881 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,243 psi | 80% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,692 psi | 77% | 2844 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,170 psi | 78% | 2799 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,250 psi | 65% | 2740 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 45,992 psi | 69% | 2726 fps | 96.9% |
| Somchem S365 | <<locked>> | 80% | 48,994 psi | 73% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,048 psi | 66% | 2723 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 52,968 psi | 79% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,392 psi | 58% | 2595 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 80% | 52,228 psi | 78% | 2858 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,236 psi | 65% | 2736 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,250 psi | 63% | 2766 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 84% | 40,089 psi | 60% | 2697 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 90% | 43,279 psi | 65% | 2805 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 96% | 50,937 psi | 76% | 2992 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,243 psi | 78% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 54,592 psi | 82% | 2936 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,998 psi | 54% | 2694 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,495 psi | 61% | 2648 fps | 97.2% |
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 77 powders for 7 mm STW loaded with the .284 | 150gr | Rhino Solid Shank. Vihtavuori N570 delivers the highest muzzle velocity at 3,130 fps; across all powders the maximum-charge window runs from 1,906 fps to 3,130 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 1:12.5 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, IMR 7828 SSC rank at the top here: for 7 mm STW with the .284 | 150gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, Lovex D100 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.