Load Specifications
Load data in caliber 7 mm STW with .284 | 132gr | CutEdge Maximus bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP 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>> | 96% | 60,162 psi | 90% | 3123 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,087 psi | 86% | 3110 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 59,451 psi | 89% | 3232 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 57,696 psi | 86% | 3074 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 58,421 psi | 88% | 3169 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 56,318 psi | 84% | 3169 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,589 psi | 76% | 3054 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,281 psi | 68% | 3005 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 59,205 psi | 89% | 3097 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 58,392 psi | 88% | 3173 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 59,683 psi | 89% | 3182 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,798 psi | 87% | 3153 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,304 psi | 84% | 3163 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,580 psi | 86% | 3136 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,421 psi | 86% | 3199 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 58,653 psi | 88% | 3228 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,117 psi | 87% | 3123 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 59,263 psi | 89% | 3209 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,113 psi | 80% | 3127 fps | 98.4% |
| Bofors RP5 | <<locked>> | 94% | 56,304 psi | 84% | 3163 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 59,350 psi | 89% | 3114 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,028 psi | 84% | 3153 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 86% | 59,205 psi | 89% | 3173 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,754 psi | 87% | 3123 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 60,118 psi | 90% | 3169 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,885 psi | 88% | 3150 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,552 psi | 88% | 3087 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,275 psi | 84% | 3271 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 56,130 psi | 84% | 3143 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 55% | 2008 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,682 psi | 86% | 3097 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,130 psi | 86% | 3084 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 57,595 psi | 86% | 3100 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,927 psi | 85% | 3091 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 96% | 58,262 psi | 87% | 3212 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 57,841 psi | 87% | 3077 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 59,814 psi | 90% | 3130 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,435 psi | 86% | 3087 fps | 100% |
| Norma 204 | <<locked>> | 88% | 59,001 psi | 88% | 3156 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 40,712 psi | 61% | 2917 fps | 97.3% |
| Norma MRP | <<locked>> | 92% | 56,289 psi | 84% | 3182 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 59,466 psi | 89% | 3150 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 59,451 psi | 89% | 3235 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 58,450 psi | 88% | 3153 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,856 psi | 87% | 3156 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,608 psi | 56% | 2054 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 60,176 psi | 90% | 3123 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 59,277 psi | 89% | 3173 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,493 psi | 86% | 3130 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,014 psi | 84% | 3163 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,667 psi | 86% | 3268 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,344 psi | 78% | 3136 fps | 97% |
| Rottweil R 903 | <<locked>> | 82% | 56,898 psi | 85% | 3061 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 59,524 psi | 89% | 3140 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 57,421 psi | 86% | 3146 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 86% | 59,350 psi | 89% | 3114 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,841 psi | 87% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 59,814 psi | 90% | 3130 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 58,755 psi | 88% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 60,263 psi | 90% | 2979 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,232 psi | 86% | 3031 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,985 psi | 85% | 3140 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 60,321 psi | 90% | 3107 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,464 psi | 86% | 3064 fps | 98% |
| Somchem S365 | <<locked>> | 90% | 60,263 psi | 90% | 3150 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,928 psi | 87% | 3114 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 57,943 psi | 87% | 3022 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,377 psi | 86% | 3087 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,551 psi | 86% | 3091 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 86% | 56,521 psi | 85% | 3087 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 59,698 psi | 89% | 3166 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 60,147 psi | 90% | 3245 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 60,350 psi | 90% | 3219 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,098 psi | 80% | 3143 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,363 psi | 86% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 59,205 psi | 89% | 3173 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,057 psi | 84% | 3215 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 58,262 psi | 87% | 3114 fps | 99.4% |
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% | 34,229 psi | 51% | 2641 fps | 96.2% |
| Accurate 4350 | <<locked>> | 80% | 46,224 psi | 69% | 2930 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 47,572 psi | 71% | 3018 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 54,143 psi | 81% | 3018 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 41,452 psi | 62% | 2854 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 88% | 45,498 psi | 68% | 2966 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 44,048 psi | 66% | 2920 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 92% | 34,389 psi | 52% | 2733 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 55,506 psi | 83% | 3041 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,454 psi | 67% | 2943 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,706 psi | 78% | 3068 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,653 psi | 58% | 2782 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 84% | 39,639 psi | 59% | 2838 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,895 psi | 49% | 2671 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,719 psi | 46% | 2628 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,419 psi | 55% | 2812 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,563 psi | 82% | 3064 fps | 95.3% |
| Bofors RP15 | <<locked>> | 86% | 39,276 psi | 59% | 2828 fps | 95.2% |
| Bofors RP30 | <<locked>> | 94% | 42,946 psi | 64% | 2930 fps | 95.8% |
| Bofors RP5 | <<locked>> | 84% | 39,639 psi | 59% | 2838 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 48,921 psi | 73% | 2940 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 42,090 psi | 63% | 2884 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 48,080 psi | 72% | 2982 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 50,604 psi | 76% | 3002 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 45,382 psi | 68% | 2907 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 88% | 47,732 psi | 72% | 2956 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,655 psi | 62% | 2815 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 39,523 psi | 59% | 2917 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 48,008 psi | 72% | 3002 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 41% | 1804 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,353 psi | 66% | 2861 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,372 psi | 76% | 2969 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 43,859 psi | 66% | 2867 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 46,847 psi | 70% | 2910 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 88% | 43,830 psi | 66% | 2940 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,616 psi | 71% | 2910 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 46,122 psi | 69% | 2897 fps | 98.7% |
| Lovex S071 | <<locked>> | 84% | 33,489 psi | 50% | 2621 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 44,512 psi | 67% | 2897 fps | 96.7% |
| Norma 217 | <<locked>> | 96% | 35,172 psi | 53% | 2779 fps | 95% |
| Norma MRP | 68.6 gr | 80% | 36,013 psi | 54% | 2776 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 45,440 psi | 68% | 2917 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 43,801 psi | 66% | 2949 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 44,338 psi | 66% | 2907 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 86% | 36,143 psi | 54% | 2743 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 42% | 1844 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 56,318 psi | 84% | 3064 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 55,100 psi | 83% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,340 psi | 69% | 2946 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,802 psi | 67% | 2966 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 36,405 psi | 55% | 2822 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 48,240 psi | 72% | 3058 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 53,272 psi | 80% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,743 psi | 64% | 2835 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 82% | 40,582 psi | 61% | 2828 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 48,921 psi | 73% | 2940 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,616 psi | 71% | 2910 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 46,122 psi | 69% | 2897 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,911 psi | 82% | 3064 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,171 psi | 80% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,717 psi | 70% | 2854 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 40,234 psi | 60% | 2822 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 52,881 psi | 79% | 2999 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 46,833 psi | 70% | 2881 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 42,351 psi | 63% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,377 psi | 58% | 2746 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 80% | 50,865 psi | 76% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,876 psi | 70% | 2913 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 38,232 psi | 57% | 2730 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 46,224 psi | 69% | 2913 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 36,956 psi | 55% | 2756 fps | 99% |
| Vihtavuori N560 | 73.8 gr | 86% | 45,223 psi | 68% | 2976 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 92% | 45,339 psi | 68% | 2953 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 98% | 49,298 psi | 74% | 3071 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,296 psi | 69% | 2871 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,283 psi | 72% | 2986 fps | 99% |
| Winchester StaBALL HD | 67.9 gr | 80% | 29,225 psi | 44% | 2671 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 40,524 psi | 61% | 2789 fps | 95.8% |
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 | 132gr | CutEdge Maximus. Hodgdon Retumbo delivers the highest muzzle velocity at 3,271 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,271 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 55–90 %, leaving at least 10 % headroom. The 132.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm STW with the .284 | 132gr | CutEdge Maximus 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.