Load Specifications
Load data in caliber 7 mm STW with .284 | 165gr | Remington SP Core-Lokt bullet and 66 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 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>> | 90% | 60,205 psi | 90% | 2848 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 59,408 psi | 89% | 2959 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 86% | 57,551 psi | 86% | 2881 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 60,191 psi | 90% | 2959 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 58,653 psi | 88% | 2930 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,201 psi | 83% | 2979 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 57,377 psi | 86% | 2949 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 57,769 psi | 87% | 2881 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,740 psi | 87% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,145 psi | 86% | 2871 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 56,579 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 58,262 psi | 87% | 2854 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 58,552 psi | 88% | 2923 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 59,437 psi | 89% | 2943 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 56,840 psi | 85% | 2963 fps | 98.2% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 52,199 psi | 78% | 2877 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 56,623 psi | 85% | 2854 fps | 98.2% |
| Bofors RP15 | <<locked>> | 92% | 59,640 psi | 89% | 2936 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 58,407 psi | 88% | 2940 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 56,579 psi | 85% | 2894 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 60,365 psi | 90% | 2953 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 59,146 psi | 89% | 2890 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 58,001 psi | 87% | 2874 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,943 psi | 87% | 2792 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 57,827 psi | 87% | 3012 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,608 psi | 56% | 1824 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 59,857 psi | 90% | 2854 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,014 psi | 85% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 59,263 psi | 89% | 2867 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 90% | 58,436 psi | 88% | 2936 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,489 psi | 79% | 2867 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 59,828 psi | 90% | 2828 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 58,465 psi | 88% | 2831 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 58,073 psi | 87% | 2822 fps | 100% |
| Norma 204 | <<locked>> | 82% | 57,450 psi | 86% | 2861 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 53,693 psi | 80% | 2894 fps | 100% |
| Norma MRP | <<locked>> | 86% | 56,565 psi | 85% | 2907 fps | 100% |
| Norma URP | <<locked>> | 82% | 58,552 psi | 88% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 59,756 psi | 90% | 2959 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 57,435 psi | 86% | 2854 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 58,146 psi | 87% | 2887 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,682 psi | 58% | 1870 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 59,495 psi | 89% | 2917 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 58,958 psi | 88% | 3002 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 58,276 psi | 87% | 2969 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 86% | 58,102 psi | 87% | 2851 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 57,014 psi | 85% | 2864 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,828 psi | 90% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 58,465 psi | 88% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,943 psi | 88% | 2789 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 60,336 psi | 90% | 2913 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 59,770 psi | 90% | 2844 fps | 99.7% |
| Somchem S365 | <<locked>> | 84% | 60,176 psi | 90% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,290 psi | 86% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 60,017 psi | 90% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 57,145 psi | 86% | 2818 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 56,507 psi | 85% | 2841 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 82% | 59,292 psi | 89% | 2844 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 60,365 psi | 90% | 2884 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 60,162 psi | 90% | 2969 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 92% | 57,029 psi | 85% | 2900 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 96% | 58,537 psi | 88% | 2966 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 98% | 59,872 psi | 90% | 3031 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 59,654 psi | 89% | 2789 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 58,653 psi | 88% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,290 psi | 86% | 2835 fps | 100% |
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% | 43,207 psi | 65% | 2589 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 44,672 psi | 67% | 2710 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 47,166 psi | 71% | 2717 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 42,424 psi | 64% | 2657 fps | 97.6% |
| ADI AR 2217 | <<locked>> | 84% | 36,187 psi | 54% | 2516 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 96% | 47,500 psi | 71% | 2831 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 28,979 psi | 43% | 2362 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,587 psi | 71% | 2713 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 54,099 psi | 81% | 2815 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,137 psi | 71% | 2707 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,178 psi | 65% | 2661 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,887 psi | 63% | 2605 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,260 psi | 54% | 2543 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,413 psi | 71% | 2766 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 45,281 psi | 68% | 2759 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 98% | 48,399 psi | 73% | 2808 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,787 psi | 66% | 2628 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 40,103 psi | 60% | 2595 fps | 97.9% |
| Bofors RP30 | <<locked>> | 80% | 33,852 psi | 51% | 2474 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 43,178 psi | 65% | 2661 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 80% | 34,330 psi | 51% | 2470 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 80% | 44,991 psi | 67% | 2654 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,237 psi | 66% | 2641 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,908 psi | 76% | 2697 fps | 100% |
| Hodgdon Retumbo | 66.7 gr | 80% | 35,375 psi | 53% | 2579 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,355 psi | 43% | 1637 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,765 psi | 79% | 2753 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,345 psi | 80% | 2756 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,992 psi | 69% | 2648 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 41,060 psi | 62% | 2635 fps | 97.2% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,824 psi | 52% | 2516 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 56,318 psi | 84% | 2779 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 54,795 psi | 82% | 2779 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 37,115 psi | 56% | 2467 fps | 99.1% |
| Norma 204 | <<locked>> | 80% | 53,693 psi | 80% | 2805 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 30,560 psi | 46% | 2425 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 45,745 psi | 69% | 2730 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 54,766 psi | 82% | 2795 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 41,263 psi | 62% | 2651 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 80% | 53,780 psi | 81% | 2802 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,028 psi | 56% | 2526 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,051 psi | 44% | 1673 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 55,506 psi | 83% | 2864 fps | 100% |
| ReloadSwiss RS 76 | 71.4 gr | 80% | 34,635 psi | 52% | 2552 fps | 98.3% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 39,827 psi | 60% | 2638 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 47,921 psi | 72% | 2687 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 46,572 psi | 70% | 2694 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 56,318 psi | 84% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 54,795 psi | 82% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 55,187 psi | 83% | 2736 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,238 psi | 69% | 2690 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 48,965 psi | 73% | 2677 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 52,678 psi | 79% | 2749 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,137 psi | 71% | 2674 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 56,362 psi | 84% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 41,220 psi | 62% | 2556 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 92% | 52,634 psi | 79% | 2779 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 55,564 psi | 83% | 2792 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 46,572 psi | 70% | 2680 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,426 psi | 68% | 2723 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 80% | 37,884 psi | 57% | 2546 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 86% | 40,915 psi | 61% | 2651 fps | 95.5% |
| Vihtavuori N570 | 79.6 gr | 92% | 48,211 psi | 72% | 2835 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 55,666 psi | 83% | 2736 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,045 psi | 60% | 2661 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,453 psi | 65% | 2608 fps | 98.8% |
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 66 powders for 7 mm STW loaded with the .284 | 165gr | Remington SP Core-Lokt. Vihtavuori N570 delivers the highest muzzle velocity at 3,031 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,031 fps. ADI AR 2218 gives the best case fill at 100 %, and 66 of the 66 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 165.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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, Vihtavuori N570, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 165gr | Remington SP Core-Lokt 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.