Load Specifications
Load data in caliber 7 mm STW with .284 | 165gr | Norma Bondstrike 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 ReloadSwiss RS 80.
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>> | 90% | 57,580 psi | 86% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,957 psi | 87% | 2831 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 56,391 psi | 85% | 2913 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 88% | 58,885 psi | 88% | 2897 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 57,043 psi | 86% | 2910 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 59,393 psi | 89% | 2936 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,938 psi | 78% | 2913 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,853 psi | 81% | 2900 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 59,146 psi | 89% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 58,436 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,421 psi | 86% | 2904 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 59,277 psi | 89% | 2864 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 59,321 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 60,336 psi | 90% | 2959 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 57,232 psi | 86% | 2969 fps | 98% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,769 psi | 87% | 2867 fps | 98.2% |
| Bofors RP15 | <<locked>> | 92% | 56,797 psi | 85% | 2894 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 59,030 psi | 88% | 2949 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 57,421 psi | 86% | 2904 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 59,016 psi | 88% | 2828 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 57,188 psi | 86% | 2907 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 59,306 psi | 89% | 2887 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 60,336 psi | 90% | 2904 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 59,103 psi | 89% | 2884 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 59,277 psi | 89% | 2805 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 58,233 psi | 87% | 3022 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,637 psi | 56% | 1811 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,464 psi | 86% | 2818 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 60,234 psi | 90% | 2844 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 58,291 psi | 87% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,942 psi | 85% | 2825 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 59,451 psi | 89% | 2953 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,414 psi | 74% | 2818 fps | 99.2% |
| Lovex S065 | <<locked>> | 82% | 57,798 psi | 87% | 2795 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 59,930 psi | 90% | 2848 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 59,074 psi | 89% | 2831 fps | 100% |
| Norma 204 | <<locked>> | 84% | 59,045 psi | 89% | 2881 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 50,198 psi | 75% | 2844 fps | 100% |
| Norma MRP | <<locked>> | 88% | 57,624 psi | 86% | 2923 fps | 100% |
| Norma URP | <<locked>> | 84% | 59,886 psi | 90% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 56,666 psi | 85% | 2917 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 58,900 psi | 88% | 2874 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 59,306 psi | 89% | 2900 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,551 psi | 58% | 1854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 58,160 psi | 87% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 56,840 psi | 85% | 2884 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 59,480 psi | 89% | 3015 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 58,784 psi | 88% | 2979 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 59,553 psi | 89% | 2867 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 58,030 psi | 87% | 2877 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 59,016 psi | 88% | 2828 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,798 psi | 87% | 2795 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 59,930 psi | 90% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,869 psi | 85% | 2753 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,624 psi | 86% | 2874 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 57,217 psi | 86% | 2802 fps | 99.4% |
| Somchem S365 | <<locked>> | 84% | 57,348 psi | 86% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 58,421 psi | 88% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,624 psi | 86% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 58,465 psi | 88% | 2831 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 57,305 psi | 86% | 2848 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 82% | 56,855 psi | 85% | 2805 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,421 psi | 86% | 2844 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,087 psi | 86% | 2923 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 57,885 psi | 87% | 2913 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 59,234 psi | 89% | 2979 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 98% | 56,275 psi | 84% | 2976 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 57,246 psi | 86% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 59,538 psi | 89% | 2887 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 59,074 psi | 89% | 2953 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 58,479 psi | 88% | 2844 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% | 41,017 psi | 61% | 2546 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 54,157 psi | 81% | 2779 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 42,380 psi | 64% | 2661 fps | 96.2% |
| ADI AR 2209 | <<locked>> | 80% | 45,078 psi | 68% | 2674 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 80% | 40,350 psi | 60% | 2612 fps | 96.7% |
| ADI AR 2217 | <<locked>> | 86% | 36,782 psi | 55% | 2530 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 98% | 48,240 psi | 72% | 2844 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 82% | 29,443 psi | 44% | 2379 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,895 psi | 78% | 2782 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,976 psi | 67% | 2664 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,988 psi | 61% | 2618 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,711 psi | 60% | 2566 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,360 psi | 52% | 2500 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,788 psi | 67% | 2726 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 45,716 psi | 69% | 2769 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 44,846 psi | 67% | 2644 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 38,130 psi | 57% | 2556 fps | 97.2% |
| Bofors RP30 | <<locked>> | 82% | 34,171 psi | 51% | 2487 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 40,988 psi | 61% | 2618 fps | 98.1% |
| Bofors RP7 | <<locked>> | 80% | 55,564 psi | 83% | 2779 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 35,099 psi | 53% | 2490 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 55,579 psi | 83% | 2831 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 42,917 psi | 64% | 2612 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,206 psi | 63% | 2598 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,834 psi | 73% | 2661 fps | 100% |
| Hodgdon Retumbo | 63.9 gr | 80% | 33,562 psi | 50% | 2526 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,181 psi | 42% | 1621 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,792 psi | 76% | 2717 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 56,768 psi | 85% | 2799 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 51,126 psi | 77% | 2720 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,222 psi | 66% | 2608 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 39,102 psi | 59% | 2592 fps | 96.4% |
| IMR 8133 Enduron | <<locked>> | 90% | 35,041 psi | 53% | 2526 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 54,215 psi | 81% | 2746 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,707 psi | 79% | 2743 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,433 psi | 53% | 2431 fps | 98.7% |
| Norma 204 | <<locked>> | 80% | 51,503 psi | 77% | 2766 fps | 99.6% |
| Norma 217 | <<locked>> | 86% | 30,835 psi | 46% | 2434 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 43,468 psi | 65% | 2690 fps | 99.5% |
| Norma URP | <<locked>> | 80% | 52,504 psi | 79% | 2762 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,899 psi | 58% | 2598 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 80% | 51,517 psi | 77% | 2766 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,896 psi | 52% | 2480 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,863 psi | 43% | 1657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 54,447 psi | 82% | 2802 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,866 psi | 79% | 2825 fps | 100% |
| ReloadSwiss RS 76 | 68.4 gr | 80% | 32,764 psi | 49% | 2503 fps | 97.3% |
| ReloadSwiss RS 80 | 75.8 gr | 88% | 40,147 psi | 60% | 2651 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 45,963 psi | 69% | 2648 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 44,483 psi | 67% | 2654 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 80% | 55,564 psi | 83% | 2779 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 54,215 psi | 81% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,707 psi | 79% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,287 psi | 80% | 2703 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,135 psi | 66% | 2651 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 46,992 psi | 70% | 2638 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 50,270 psi | 75% | 2717 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,034 psi | 68% | 2635 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 53,954 psi | 81% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 39,233 psi | 59% | 2513 fps | 98.2% |
| Vihtavuori N170 | <<locked>> | 94% | 53,693 psi | 80% | 2789 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 53,301 psi | 80% | 2756 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,309 psi | 66% | 2644 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,250 psi | 65% | 2680 fps | 97.1% |
| Vihtavuori N565 | <<locked>> | 82% | 38,421 psi | 58% | 2559 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 88% | 41,408 psi | 62% | 2664 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 94% | 48,733 psi | 73% | 2844 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,447 psi | 80% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 55,796 psi | 84% | 2835 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,333 psi | 56% | 2615 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,437 psi | 62% | 2566 fps | 98.2% |
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 71 powders for 7 mm STW loaded with the .284 | 165gr | Norma Bondstrike. Hodgdon Retumbo delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,811 fps to 3,022 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 1:9.5 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, ReloadSwiss RS 80 rank at the top here: for 7 mm STW with the .284 | 165gr | Norma Bondstrike 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.