Load Specifications
Load data in caliber 7 mm STW with .284 | 152gr | CutEdge Maximus bullet and 75 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 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>> | 92% | 56,666 psi | 85% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,464 psi | 86% | 2933 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 59,799 psi | 90% | 3068 fps | 99% |
| ADI AR 2209 | <<locked>> | 90% | 58,711 psi | 88% | 3002 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 56,797 psi | 85% | 3009 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,839 psi | 82% | 2969 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,226 psi | 74% | 2927 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 58,885 psi | 88% | 2995 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 58,769 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 60,017 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,146 psi | 87% | 2989 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,927 psi | 85% | 2999 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 58,262 psi | 87% | 2963 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 58,204 psi | 87% | 3031 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 59,509 psi | 89% | 3058 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,957 psi | 87% | 2966 fps | 97.5% |
| Bofors RP15 | <<locked>> | 96% | 59,727 psi | 90% | 3041 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 58,073 psi | 87% | 3041 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 56,927 psi | 85% | 2999 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 59,045 psi | 89% | 2936 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,449 psi | 85% | 2995 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 59,117 psi | 89% | 2992 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,725 psi | 87% | 2949 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 60,133 psi | 90% | 2999 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 59,103 psi | 89% | 2986 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 58,856 psi | 88% | 2910 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,188 psi | 86% | 3114 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,086 psi | 84% | 2969 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,144 psi | 56% | 1877 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,566 psi | 86% | 2923 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,956 psi | 85% | 2904 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,711 psi | 87% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,956 psi | 85% | 2927 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 58,769 psi | 88% | 3048 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,527 psi | 67% | 2825 fps | 97.6% |
| Lovex S065 | <<locked>> | 84% | 57,638 psi | 86% | 2900 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 59,625 psi | 89% | 2953 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,914 psi | 87% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 86% | 58,914 psi | 88% | 2982 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 44,933 psi | 67% | 2851 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 56,927 psi | 85% | 3018 fps | 100% |
| Norma URP | <<locked>> | 86% | 59,466 psi | 89% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 60,176 psi | 90% | 3071 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 58,581 psi | 88% | 2979 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,436 psi | 88% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,130 psi | 57% | 1923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,769 psi | 87% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,507 psi | 85% | 2986 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,334 psi | 87% | 3107 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,537 psi | 86% | 3061 fps | 99% |
| Rottweil R 904 | <<locked>> | 90% | 59,567 psi | 89% | 2969 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 57,624 psi | 86% | 2976 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 59,045 psi | 89% | 2936 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,638 psi | 86% | 2900 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 59,625 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 59,857 psi | 90% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,782 psi | 85% | 2854 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,203 psi | 86% | 2969 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 59,988 psi | 90% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,406 psi | 86% | 2904 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 56,739 psi | 85% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,146 psi | 87% | 2946 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,870 psi | 87% | 2841 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,522 psi | 86% | 2907 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,972 psi | 87% | 2930 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,565 psi | 85% | 2910 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 60,249 psi | 90% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,550 psi | 85% | 3018 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 56,913 psi | 85% | 3002 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 58,247 psi | 87% | 3064 fps | 98.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,926 psi | 82% | 3051 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,232 psi | 86% | 2861 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 59,321 psi | 89% | 2995 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,522 psi | 86% | 3051 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,088 psi | 87% | 2943 fps | 99.8% |
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% | 37,289 psi | 56% | 2566 fps | 98.5% |
| Accurate 4350 | <<locked>> | 80% | 49,966 psi | 75% | 2822 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 44,715 psi | 67% | 2805 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 41,568 psi | 62% | 2700 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 82% | 39,856 psi | 60% | 2690 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 90% | 38,667 psi | 58% | 2657 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 88% | 32,634 psi | 49% | 2556 fps | 96.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,076 psi | 63% | 2703 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,964 psi | 72% | 2831 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 55,840 psi | 84% | 2943 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,655 psi | 62% | 2694 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,492 psi | 56% | 2635 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,129 psi | 54% | 2595 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,096 psi | 47% | 2503 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,364 psi | 61% | 2743 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,805 psi | 72% | 2789 fps | 95% |
| Bofors RP15 | <<locked>> | 82% | 37,333 psi | 56% | 2628 fps | 96% |
| Bofors RP30 | <<locked>> | 88% | 38,058 psi | 57% | 2667 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 37,492 psi | 56% | 2635 fps | 96.2% |
| Bofors RP7 | <<locked>> | 80% | 51,996 psi | 78% | 2828 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 36,724 psi | 55% | 2615 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 51,547 psi | 77% | 2874 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 54,070 psi | 81% | 2894 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 42,511 psi | 64% | 2697 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,771 psi | 63% | 2680 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,092 psi | 68% | 2707 fps | 100% |
| Hodgdon Retumbo | 67.5 gr | 84% | 34,867 psi | 52% | 2651 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 51,938 psi | 78% | 2904 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 42% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,384 psi | 71% | 2759 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,432 psi | 80% | 2851 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 47,398 psi | 71% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,118 psi | 62% | 2638 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 82% | 38,435 psi | 58% | 2667 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 38,725 psi | 58% | 2700 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 50,850 psi | 76% | 2799 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,240 psi | 74% | 2789 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 31,908 psi | 48% | 2434 fps | 96.8% |
| Norma 204 | <<locked>> | 80% | 47,964 psi | 72% | 2805 fps | 98.7% |
| Norma 217 | <<locked>> | 92% | 33,678 psi | 50% | 2602 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 39,566 psi | 59% | 2707 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 48,834 psi | 73% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 38,189 psi | 57% | 2674 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 47,863 psi | 72% | 2808 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 33,968 psi | 51% | 2546 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,543 psi | 43% | 1722 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,082 psi | 75% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,501 psi | 73% | 2864 fps | 100% |
| ReloadSwiss RS 76 | 70.6 gr | 82% | 31,763 psi | 48% | 2556 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,945 psi | 63% | 2779 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 42,844 psi | 64% | 2680 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 80% | 40,988 psi | 61% | 2680 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 80% | 51,996 psi | 78% | 2828 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,850 psi | 76% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,240 psi | 74% | 2789 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 56,275 psi | 84% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,748 psi | 75% | 2746 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,654 psi | 61% | 2674 fps | 97.3% |
| Somchem S355 | <<locked>> | 80% | 56,463 psi | 85% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 43,526 psi | 65% | 2664 fps | 96.1% |
| Somchem S365 | <<locked>> | 80% | 46,050 psi | 69% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,495 psi | 62% | 2661 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 80% | 54,157 psi | 81% | 2792 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,328 psi | 75% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,013 psi | 54% | 2533 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 80% | 49,661 psi | 74% | 2805 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,248 psi | 60% | 2667 fps | 99.9% |
| Vihtavuori N560 | 68.4 gr | 82% | 42,453 psi | 64% | 2759 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 86% | 39,900 psi | 60% | 2684 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 92% | 43,352 psi | 65% | 2799 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 98% | 51,126 psi | 77% | 2986 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,574 psi | 74% | 2753 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,779 psi | 78% | 2877 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,924 psi | 49% | 2618 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,942 psi | 57% | 2585 fps | 96.4% |
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 | 152gr | CutEdge Maximus. Hodgdon Retumbo delivers the highest muzzle velocity at 3,114 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,114 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 152.0 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 2225, Bofors RP30 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, Vihtavuori N560 rank at the top here: for 7 mm STW with the .284 | 152gr | 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.