Load Specifications
Load data in caliber 7 mm STW with .284 | 140gr | Nosler Ballistic Tip Hunting bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 60,350 psi | 90% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,130 psi | 86% | 3031 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 59,205 psi | 89% | 3153 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 58,001 psi | 87% | 3087 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 60,031 psi | 90% | 3156 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,143 psi | 81% | 3051 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,646 psi | 73% | 3005 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 58,073 psi | 87% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 59,234 psi | 89% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,508 psi | 86% | 3074 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 60,205 psi | 90% | 3150 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,711 psi | 87% | 3058 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,464 psi | 86% | 3120 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 58,639 psi | 88% | 3150 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,435 psi | 86% | 3048 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 59,306 psi | 89% | 3133 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,334 psi | 86% | 3123 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 60,205 psi | 90% | 3150 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 58,682 psi | 88% | 3031 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 59,959 psi | 90% | 3143 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 58,668 psi | 88% | 3084 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,217 psi | 86% | 3041 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 59,495 psi | 89% | 3087 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 58,508 psi | 88% | 3071 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 58,233 psi | 87% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 60,307 psi | 90% | 3258 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 59,843 psi | 90% | 3123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,304 psi | 56% | 1959 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,000 psi | 85% | 3012 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 59,973 psi | 90% | 3051 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,217 psi | 86% | 3018 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 60,031 psi | 90% | 3068 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 57,957 psi | 87% | 3130 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,164 psi | 66% | 2904 fps | 96.7% |
| Lovex S065 | <<locked>> | 84% | 57,421 psi | 86% | 2995 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 59,176 psi | 89% | 3045 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,682 psi | 86% | 3015 fps | 100% |
| Norma 204 | <<locked>> | 86% | 58,334 psi | 87% | 3071 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 44,483 psi | 67% | 2930 fps | 98.8% |
| Norma MRP | <<locked>> | 90% | 56,289 psi | 84% | 3107 fps | 100% |
| Norma URP | <<locked>> | 86% | 58,914 psi | 88% | 3064 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 59,306 psi | 89% | 3156 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 58,015 psi | 87% | 3068 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,841 psi | 87% | 3084 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,101 psi | 57% | 2005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,334 psi | 86% | 3051 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 59,872 psi | 90% | 3136 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,667 psi | 86% | 3192 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,116 psi | 86% | 3143 fps | 98.4% |
| Rottweil R 904 | <<locked>> | 90% | 58,769 psi | 88% | 3054 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 90% | 57,029 psi | 85% | 3064 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 58,682 psi | 88% | 3031 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,421 psi | 86% | 2995 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 59,176 psi | 89% | 3045 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 59,509 psi | 89% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,507 psi | 85% | 2946 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,608 psi | 85% | 3061 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 59,814 psi | 90% | 3018 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 56,956 psi | 85% | 2989 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 60,234 psi | 90% | 3068 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,638 psi | 86% | 3035 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 57,392 psi | 86% | 2936 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,029 psi | 85% | 3002 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,421 psi | 86% | 3015 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 59,930 psi | 90% | 3058 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 59,959 psi | 90% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 59,944 psi | 90% | 3169 fps | 99% |
| Vihtavuori N565 | <<locked>> | 98% | 60,220 psi | 90% | 3143 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,479 psi | 86% | 3146 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,637 psi | 85% | 2949 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 58,668 psi | 88% | 3084 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,739 psi | 85% | 3143 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,769 psi | 87% | 3031 fps | 99.6% |
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% | 37,376 psi | 56% | 2651 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 49,748 psi | 75% | 2913 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 44,382 psi | 67% | 2884 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 41,263 psi | 62% | 2779 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 42,380 psi | 64% | 2831 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 92% | 41,118 psi | 62% | 2795 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 88% | 32,518 psi | 49% | 2621 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,485 psi | 71% | 2920 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 55,245 psi | 83% | 3041 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,394 psi | 62% | 2776 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,275 psi | 56% | 2713 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,998 psi | 54% | 2680 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,096 psi | 47% | 2579 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,001 psi | 60% | 2825 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,780 psi | 81% | 2982 fps | 95.8% |
| Bofors RP15 | <<locked>> | 82% | 37,115 psi | 56% | 2707 fps | 95% |
| Bofors RP30 | <<locked>> | 90% | 40,567 psi | 61% | 2808 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 37,275 psi | 56% | 2713 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 51,764 psi | 78% | 2917 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 39,334 psi | 59% | 2756 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 51,227 psi | 77% | 2966 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 53,534 psi | 80% | 2979 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 45,324 psi | 68% | 2841 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 44,411 psi | 67% | 2822 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,657 psi | 67% | 2795 fps | 100% |
| Hodgdon Retumbo | 71 gr | 86% | 37,260 psi | 56% | 2795 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 51,445 psi | 77% | 2992 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 42% | 1755 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,036 psi | 71% | 2841 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,026 psi | 79% | 2940 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 47,181 psi | 71% | 2858 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 43,758 psi | 66% | 2779 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 40,915 psi | 61% | 2808 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 41,234 psi | 62% | 2841 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 50,691 psi | 76% | 2890 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 49,052 psi | 74% | 2881 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 32,111 psi | 48% | 2520 fps | 96% |
| Norma 204 | <<locked>> | 80% | 47,427 psi | 71% | 2884 fps | 98% |
| Norma 217 | <<locked>> | 92% | 33,736 psi | 51% | 2677 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 39,189 psi | 59% | 2785 fps | 97.4% |
| Norma URP | <<locked>> | 80% | 48,515 psi | 73% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,814 psi | 61% | 2815 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 47,355 psi | 71% | 2894 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 36,550 psi | 55% | 2687 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 43% | 1798 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,748 psi | 75% | 2933 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,124 psi | 72% | 2956 fps | 100% |
| ReloadSwiss RS 76 | 74.2 gr | 84% | 34,113 psi | 51% | 2697 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 44,991 psi | 67% | 2927 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 42,598 psi | 64% | 2762 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 40,770 psi | 61% | 2762 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 51,764 psi | 78% | 2917 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,691 psi | 76% | 2890 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 49,052 psi | 74% | 2881 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 55,840 psi | 84% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,501 psi | 74% | 2835 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,451 psi | 61% | 2756 fps | 96.5% |
| Somchem S355 | <<locked>> | 80% | 56,217 psi | 84% | 2969 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 43,482 psi | 65% | 2746 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 45,701 psi | 69% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,336 psi | 62% | 2743 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 53,853 psi | 81% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,937 psi | 75% | 2894 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,882 psi | 54% | 2612 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 49,284 psi | 74% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,219 psi | 60% | 2756 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 84% | 45,339 psi | 68% | 2907 fps | 96% |
| Vihtavuori N565 | <<locked>> | 88% | 42,714 psi | 64% | 2831 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 94% | 46,079 psi | 69% | 2940 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,298 psi | 74% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,430 psi | 77% | 2969 fps | 99.7% |
| Winchester StaBALL HD | 67.8 gr | 80% | 32,460 psi | 49% | 2697 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,869 psi | 57% | 2664 fps | 95.5% |
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 78 powders for 7 mm STW loaded with the .284 | 140gr | Nosler Ballistic Tip Hunting. Hodgdon Retumbo delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,959 fps to 3,258 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 140.0 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 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. Winchester StaBALL HD, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 140gr | Nosler Ballistic Tip Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, IMR 7977 Enduron, Vihtavuori N170 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.