Load Specifications
Load data in caliber 7 mm STW with .284 | 130gr | NorthFork Bonded Core bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Ramshot Grand.
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>> | 94% | 58,233 psi | 87% | 3114 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,972 psi | 88% | 3153 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 57,072 psi | 86% | 3205 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 59,132 psi | 89% | 3110 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 60,002 psi | 90% | 3209 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 57,827 psi | 87% | 3209 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,228 psi | 78% | 3097 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,949 psi | 70% | 3054 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 59,901 psi | 90% | 3212 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,159 psi | 86% | 3163 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 59,321 psi | 89% | 3192 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,972 psi | 87% | 3202 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 59,364 psi | 89% | 3176 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 59,103 psi | 89% | 3235 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 56,333 psi | 84% | 3205 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 59,393 psi | 89% | 3159 fps | 96.4% |
| Bofors RP15 | <<locked>> | 96% | 57,116 psi | 86% | 3189 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,056 psi | 83% | 3173 fps | 98.6% |
| Bofors RP5 | <<locked>> | 94% | 57,972 psi | 87% | 3202 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 56,942 psi | 85% | 3094 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,740 psi | 87% | 3196 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 84% | 56,768 psi | 85% | 3146 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 59,132 psi | 89% | 3163 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 57,754 psi | 87% | 3146 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 60,365 psi | 90% | 3186 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 60,089 psi | 90% | 3123 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 58,102 psi | 87% | 3317 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 57,754 psi | 87% | 3182 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,014 psi | 55% | 2028 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 59,001 psi | 88% | 3133 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,436 psi | 88% | 3120 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 59,205 psi | 89% | 3140 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 58,349 psi | 87% | 3127 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 96% | 59,843 psi | 90% | 3251 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 59,393 psi | 89% | 3117 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,464 psi | 86% | 3110 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 59,422 psi | 89% | 3127 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,637 psi | 85% | 3133 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 42,482 psi | 64% | 2966 fps | 97.8% |
| Norma MRP | <<locked>> | 92% | 58,262 psi | 87% | 3228 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 57,043 psi | 86% | 3130 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,710 psi | 85% | 3205 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 60,075 psi | 90% | 3192 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 60,017 psi | 90% | 3202 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,942 psi | 57% | 2077 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 59,146 psi | 89% | 3169 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,740 psi | 87% | 3202 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 59,756 psi | 90% | 3314 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,534 psi | 82% | 3186 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 58,494 psi | 88% | 3097 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 57,101 psi | 86% | 3114 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 92% | 58,914 psi | 88% | 3182 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 56,942 psi | 85% | 3094 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 59,393 psi | 89% | 3117 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,464 psi | 86% | 3110 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 60,263 psi | 90% | 3156 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,725 psi | 87% | 2963 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,711 psi | 88% | 3068 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 58,465 psi | 88% | 3179 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 58,073 psi | 87% | 3091 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 59,103 psi | 89% | 3104 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 58,015 psi | 87% | 3133 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 59,625 psi | 89% | 3156 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 59,509 psi | 89% | 3061 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,900 psi | 88% | 3123 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 59,393 psi | 89% | 3133 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 58,247 psi | 87% | 3127 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,653 psi | 86% | 3150 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,899 psi | 87% | 3222 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 98% | 58,204 psi | 87% | 3199 fps | 98.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,187 psi | 83% | 3189 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,871 psi | 88% | 3074 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,768 psi | 85% | 3146 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 58,363 psi | 87% | 3261 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 59,828 psi | 90% | 3150 fps | 99.5% |
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% | 35,897 psi | 54% | 2690 fps | 96.8% |
| Accurate 4350 | <<locked>> | 80% | 47,921 psi | 72% | 2972 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 49,284 psi | 74% | 3064 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 55,361 psi | 83% | 3054 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 39,769 psi | 60% | 2825 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 86% | 43,845 psi | 66% | 2943 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 94% | 42,395 psi | 64% | 2897 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 35,737 psi | 54% | 2782 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,774 psi | 69% | 2979 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,287 psi | 80% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,900 psi | 60% | 2825 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 84% | 41,176 psi | 62% | 2884 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,360 psi | 52% | 2720 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 32,024 psi | 48% | 2677 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,145 psi | 57% | 2867 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,898 psi | 84% | 3100 fps | 95.6% |
| Bofors RP15 | <<locked>> | 86% | 40,799 psi | 61% | 2874 fps | 95.6% |
| Bofors RP30 | <<locked>> | 92% | 41,582 psi | 62% | 2910 fps | 95.2% |
| Bofors RP5 | <<locked>> | 84% | 41,176 psi | 62% | 2884 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 50,270 psi | 75% | 2979 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 90% | 40,596 psi | 61% | 2858 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 49,429 psi | 74% | 3018 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 51,837 psi | 78% | 3038 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 46,934 psi | 70% | 2953 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 86% | 45,992 psi | 69% | 2933 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,105 psi | 65% | 2854 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 38,334 psi | 57% | 2897 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 49,661 psi | 74% | 3045 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 42% | 1821 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,542 psi | 68% | 2897 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,532 psi | 77% | 3005 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 45,527 psi | 68% | 2913 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 45,223 psi | 68% | 2887 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 45,237 psi | 68% | 2982 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 49,023 psi | 73% | 2946 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 47,558 psi | 71% | 2936 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 32,895 psi | 49% | 2615 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 45,934 psi | 69% | 2936 fps | 97% |
| Norma 217 | <<locked>> | 96% | 36,898 psi | 55% | 2835 fps | 95.7% |
| Norma MRP | 69.7 gr | 80% | 37,579 psi | 56% | 2825 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 46,847 psi | 70% | 2956 fps | 99.9% |
| Ramshot Grand | 74.3 gr | 86% | 42,090 psi | 63% | 2923 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 45,832 psi | 69% | 2949 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 37,782 psi | 57% | 2792 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 42% | 1860 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,022 psi | 72% | 2992 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,311 psi | 69% | 3009 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 35,273 psi | 53% | 2799 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 46,586 psi | 70% | 3038 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 54,897 psi | 82% | 3045 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 43,947 psi | 66% | 2874 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 39,247 psi | 59% | 2808 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 50,270 psi | 75% | 2979 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,023 psi | 73% | 2946 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 47,558 psi | 71% | 2936 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 56,420 psi | 85% | 3100 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,447 psi | 82% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,037 psi | 72% | 2894 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,914 psi | 58% | 2802 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 54,346 psi | 81% | 3035 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,976 psi | 67% | 2854 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 43,874 psi | 66% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,827 psi | 60% | 2789 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 52,257 psi | 78% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,240 psi | 72% | 2953 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 37,028 psi | 56% | 2713 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 47,790 psi | 72% | 2953 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 38,609 psi | 58% | 2805 fps | 99.2% |
| Vihtavuori N560 | 74.9 gr | 86% | 46,688 psi | 70% | 3015 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 90% | 44,005 psi | 66% | 2936 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 98% | 51,155 psi | 77% | 3117 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,659 psi | 71% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,647 psi | 74% | 3025 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,792 psi | 46% | 2730 fps | 99.4% |
| Winchester Supreme 780 | <<locked>> | 82% | 39,088 psi | 59% | 2769 fps | 95.1% |
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 75 powders for 7 mm STW loaded with the .284 | 130gr | NorthFork Bonded Core. Hodgdon Retumbo delivers the highest muzzle velocity at 3,317 fps; across all powders the maximum-charge window runs from 2,028 fps to 3,317 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 130.0 gr projectile in 0.284" calls for a 1:12.0 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. Vihtavuori N560, Norma MRP, Ramshot Grand rank at the top here: for 7 mm STW with the .284 | 130gr | NorthFork Bonded Core 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.