Load Specifications
Load data in caliber 7 mm STW with .284 | 150gr | Lapua ScenarL 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, Hodgdon Retumbo and Accurate MAGPRO.
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>> | 92% | 58,479 psi | 88% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,059 psi | 89% | 2969 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 60,249 psi | 90% | 3100 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 90% | 57,377 psi | 86% | 3041 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 90% | 60,075 psi | 90% | 3035 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 58,146 psi | 87% | 3041 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,362 psi | 84% | 3005 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,792 psi | 76% | 2966 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 60,234 psi | 90% | 3028 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 60,234 psi | 90% | 3028 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 60,017 psi | 90% | 3022 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 59,509 psi | 89% | 3022 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,407 psi | 88% | 3035 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 59,814 psi | 90% | 2995 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 59,930 psi | 90% | 3068 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,884 psi | 85% | 3035 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,635 psi | 80% | 3022 fps | 96.4% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,929 psi | 88% | 2995 fps | 97.6% |
| Bofors RP15 | <<locked>> | 94% | 57,551 psi | 86% | 3022 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 59,814 psi | 90% | 3077 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 58,407 psi | 88% | 3035 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 60,263 psi | 90% | 2966 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,957 psi | 87% | 3031 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 56,608 psi | 85% | 2966 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 58,871 psi | 88% | 2982 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 57,522 psi | 86% | 2976 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,565 psi | 85% | 2959 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 60,147 psi | 90% | 2940 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 58,900 psi | 88% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,537 psi | 86% | 3002 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,420 psi | 56% | 1896 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,668 psi | 88% | 2953 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,030 psi | 87% | 2936 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,321 psi | 89% | 2956 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,189 psi | 87% | 2956 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 60,176 psi | 90% | 3081 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,311 psi | 69% | 2871 fps | 98% |
| Lovex S065 | <<locked>> | 84% | 58,943 psi | 88% | 2933 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,435 psi | 86% | 2933 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 59,669 psi | 89% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 86% | 60,278 psi | 90% | 3015 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 46,818 psi | 70% | 2897 fps | 99.5% |
| Norma MRP | <<locked>> | 90% | 58,465 psi | 88% | 3054 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,232 psi | 86% | 2949 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,377 psi | 86% | 3041 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 60,002 psi | 90% | 3009 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 60,176 psi | 90% | 3031 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,261 psi | 57% | 1939 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,408 psi | 89% | 2992 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,711 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 60,336 psi | 90% | 3146 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 59,553 psi | 89% | 3104 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 88% | 56,869 psi | 85% | 2943 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 59,117 psi | 89% | 3009 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 60,263 psi | 90% | 2966 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 58,943 psi | 88% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,435 psi | 86% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,262 psi | 87% | 2887 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 58,697 psi | 88% | 3009 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 58,668 psi | 88% | 2936 fps | 99% |
| Somchem S365 | <<locked>> | 86% | 58,218 psi | 87% | 2949 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 59,698 psi | 89% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,176 psi | 89% | 2871 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,784 psi | 88% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 59,364 psi | 89% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 58,088 psi | 87% | 2946 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,102 psi | 87% | 2976 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,972 psi | 87% | 3051 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 58,494 psi | 88% | 3038 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 59,959 psi | 90% | 3100 fps | 98.8% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,869 psi | 85% | 3097 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,537 psi | 88% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,826 psi | 85% | 2969 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 59,596 psi | 89% | 3087 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 59,727 psi | 90% | 2976 fps | 99.9% |
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% | 38,928 psi | 58% | 2608 fps | 98.8% |
| Accurate 4350 | <<locked>> | 80% | 51,634 psi | 77% | 2861 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 42,424 psi | 64% | 2782 fps | 96.5% |
| Accurate MAGPRO | 70.6 gr | 82% | 43,076 psi | 65% | 2782 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 42,786 psi | 64% | 2736 fps | 97.6% |
| ADI AR 2213 | <<locked>> | 82% | 41,031 psi | 62% | 2726 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 90% | 39,987 psi | 60% | 2700 fps | 96% |
| ADI AR 2225 | <<locked>> | 86% | 31,705 psi | 48% | 2533 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,294 psi | 65% | 2740 fps | 97.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,294 psi | 65% | 2740 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,284 psi | 74% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,902 psi | 64% | 2733 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,827 psi | 58% | 2674 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,565 psi | 56% | 2635 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,372 psi | 49% | 2546 fps | 97.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,901 psi | 63% | 2785 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,864 psi | 75% | 2953 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,849 psi | 73% | 2822 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 36,143 psi | 54% | 2612 fps | 95.4% |
| Bofors RP30 | <<locked>> | 86% | 36,840 psi | 55% | 2651 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 38,827 psi | 58% | 2674 fps | 96.6% |
| Bofors RP7 | <<locked>> | 80% | 53,287 psi | 80% | 2861 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 38,043 psi | 57% | 2654 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 53,084 psi | 80% | 2913 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 55,230 psi | 83% | 2923 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 40,857 psi | 61% | 2674 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 82% | 42,989 psi | 64% | 2717 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,470 psi | 70% | 2743 fps | 100% |
| Hodgdon Retumbo | 66.7 gr | 82% | 33,779 psi | 51% | 2628 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 53,388 psi | 80% | 2940 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 42% | 1696 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,544 psi | 73% | 2792 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,549 psi | 82% | 2884 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,646 psi | 73% | 2799 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,250 psi | 63% | 2674 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 82% | 39,682 psi | 59% | 2707 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,550 psi | 56% | 2684 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 52,199 psi | 78% | 2831 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,618 psi | 76% | 2825 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 33,388 psi | 50% | 2480 fps | 97.2% |
| Norma 204 | <<locked>> | 80% | 49,153 psi | 74% | 2838 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 33,054 psi | 50% | 2592 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 40,973 psi | 61% | 2746 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 50,212 psi | 75% | 2841 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 39,479 psi | 59% | 2713 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 49,139 psi | 74% | 2844 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 32,938 psi | 49% | 2530 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,631 psi | 43% | 1736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,764 psi | 78% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,024 psi | 75% | 2900 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 33,040 psi | 50% | 2602 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 43,729 psi | 66% | 2828 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 43,874 psi | 66% | 2713 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 80% | 42,337 psi | 63% | 2720 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 80% | 53,287 psi | 80% | 2861 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,199 psi | 78% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,618 psi | 76% | 2825 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,024 psi | 76% | 2779 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,003 psi | 63% | 2713 fps | 97.6% |
| Somchem S361 | <<locked>> | 80% | 44,860 psi | 67% | 2700 fps | 96.4% |
| Somchem S365 | <<locked>> | 80% | 47,543 psi | 71% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,888 psi | 64% | 2700 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 55,492 psi | 83% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,634 psi | 77% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,304 psi | 56% | 2572 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 80% | 50,981 psi | 76% | 2838 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,887 psi | 63% | 2710 fps | 100% |
| Vihtavuori N560 | 67.6 gr | 80% | 40,886 psi | 61% | 2733 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 86% | 41,539 psi | 62% | 2730 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 92% | 44,831 psi | 67% | 2838 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 98% | 52,823 psi | 79% | 3025 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,952 psi | 76% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,084 psi | 80% | 2913 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,490 psi | 52% | 2667 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,204 psi | 59% | 2621 fps | 96.7% |
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 | 150gr | Lapua ScenarL. Hodgdon Retumbo delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,153 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 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, Hodgdon Retumbo, Accurate MAGPRO rank at the top here: for 7 mm STW with the .284 | 150gr | Lapua ScenarL 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.