Load Specifications
Load data in caliber 7 mm STW with .284 | 150gr | Peregrine VLR-4 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 Winchester StaBALL HD.
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% | 59,364 psi | 89% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,333 psi | 84% | 2933 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 58,465 psi | 88% | 3064 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 82% | 60,336 psi | 90% | 2943 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 57,450 psi | 86% | 2995 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 59,538 psi | 89% | 3064 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,621 psi | 80% | 2963 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,066 psi | 72% | 2920 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,624 psi | 86% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 58,871 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,942 psi | 85% | 2986 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 59,596 psi | 89% | 3058 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,130 psi | 86% | 2966 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,782 psi | 85% | 3028 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 58,001 psi | 87% | 3058 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,797 psi | 85% | 2959 fps | 97.1% |
| Bofors RP15 | <<locked>> | 96% | 58,653 psi | 88% | 3041 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,681 psi | 85% | 3035 fps | 99.5% |
| Bofors RP5 | <<locked>> | 94% | 59,596 psi | 89% | 3058 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 58,059 psi | 87% | 2933 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 59,306 psi | 89% | 3051 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 84% | 58,030 psi | 87% | 2989 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,724 psi | 85% | 2949 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 59,117 psi | 89% | 2999 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,885 psi | 87% | 2982 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,769 psi | 87% | 2913 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 59,886 psi | 90% | 3173 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 59,205 psi | 89% | 3031 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,144 psi | 56% | 1886 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,623 psi | 85% | 2923 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 59,756 psi | 90% | 2959 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,652 psi | 85% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 59,582 psi | 89% | 2979 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 94% | 57,421 psi | 86% | 3041 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,308 psi | 65% | 2815 fps | 97.1% |
| Lovex S065 | <<locked>> | 84% | 56,666 psi | 85% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 58,624 psi | 88% | 2953 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,608 psi | 85% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,943 psi | 87% | 2982 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 43,642 psi | 65% | 2844 fps | 99% |
| Norma MRP | <<locked>> | 92% | 59,814 psi | 90% | 3077 fps | 100% |
| Norma URP | <<locked>> | 86% | 58,407 psi | 88% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 58,653 psi | 88% | 3064 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 57,522 psi | 86% | 2979 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,072 psi | 86% | 2992 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 57% | 1929 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,681 psi | 85% | 2959 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 59,379 psi | 89% | 3045 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,927 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,144 psi | 84% | 3054 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 82% | 59,741 psi | 90% | 2930 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 58,363 psi | 87% | 2966 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 56,550 psi | 85% | 2972 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 58,059 psi | 87% | 2933 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,666 psi | 85% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 58,624 psi | 88% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 59,088 psi | 89% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 59,727 psi | 90% | 2910 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 60,133 psi | 90% | 3028 fps | 99.9% |
| Somchem S355 | <<locked>> | 82% | 59,205 psi | 89% | 2923 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 60,292 psi | 90% | 2959 fps | 99.1% |
| Somchem S365 | <<locked>> | 88% | 59,596 psi | 89% | 2972 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,913 psi | 85% | 2943 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,855 psi | 85% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,478 psi | 85% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,753 psi | 85% | 2927 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 59,350 psi | 89% | 2966 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 59,088 psi | 89% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 59,437 psi | 89% | 3077 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 98% | 59,538 psi | 89% | 3054 fps | 99.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,666 psi | 85% | 3054 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 60,104 psi | 90% | 2913 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 58,276 psi | 87% | 2992 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,811 psi | 84% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,130 psi | 86% | 2943 fps | 99.7% |
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% | 36,405 psi | 55% | 2559 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 48,892 psi | 73% | 2822 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 43,758 psi | 66% | 2799 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 56,536 psi | 85% | 2890 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 40,857 psi | 61% | 2700 fps | 97% |
| ADI AR 2213 | <<locked>> | 82% | 39,015 psi | 58% | 2684 fps | 95% |
| ADI AR 2217 | <<locked>> | 92% | 40,495 psi | 61% | 2713 fps | 96% |
| ADI AR 2225 | <<locked>> | 88% | 31,792 psi | 48% | 2543 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,920 psi | 70% | 2828 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 54,708 psi | 82% | 2946 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,799 psi | 61% | 2690 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,622 psi | 55% | 2628 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,215 psi | 53% | 2589 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,501 psi | 46% | 2497 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,320 psi | 59% | 2736 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,082 psi | 75% | 2844 fps | 95.4% |
| Bofors RP15 | <<locked>> | 82% | 36,477 psi | 55% | 2625 fps | 95.4% |
| Bofors RP30 | <<locked>> | 90% | 39,740 psi | 60% | 2723 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 36,622 psi | 55% | 2628 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 51,082 psi | 77% | 2825 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 38,595 psi | 58% | 2671 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 50,763 psi | 76% | 2874 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 53,127 psi | 80% | 2890 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 41,655 psi | 62% | 2694 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,944 psi | 61% | 2677 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,092 psi | 66% | 2707 fps | 100% |
| Hodgdon Retumbo | 66.9 gr | 84% | 34,069 psi | 51% | 2641 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 50,952 psi | 76% | 2904 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 42% | 1690 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,688 psi | 70% | 2759 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,504 psi | 79% | 2851 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 46,427 psi | 70% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,509 psi | 61% | 2638 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 84% | 40,364 psi | 61% | 2726 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,666 psi | 56% | 2690 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 49,937 psi | 75% | 2799 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,312 psi | 72% | 2789 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 31,241 psi | 47% | 2434 fps | 96.3% |
| Norma 204 | <<locked>> | 80% | 47,021 psi | 70% | 2802 fps | 98.3% |
| Norma 217 | <<locked>> | 92% | 32,837 psi | 49% | 2592 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 38,624 psi | 58% | 2700 fps | 97.8% |
| Norma URP | <<locked>> | 80% | 47,848 psi | 72% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,132 psi | 60% | 2733 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 46,905 psi | 70% | 2808 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 33,156 psi | 50% | 2536 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,456 psi | 43% | 1729 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,037 psi | 74% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,442 psi | 71% | 2861 fps | 100% |
| ReloadSwiss RS 76 | 71.6 gr | 84% | 33,286 psi | 50% | 2612 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 44,121 psi | 66% | 2838 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 55,869 psi | 84% | 2877 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 41,989 psi | 63% | 2677 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 40,089 psi | 60% | 2677 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 51,082 psi | 77% | 2825 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,937 psi | 75% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,312 psi | 72% | 2789 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 55,535 psi | 83% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,863 psi | 73% | 2746 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,755 psi | 60% | 2671 fps | 96.8% |
| Somchem S355 | <<locked>> | 80% | 55,434 psi | 83% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 42,757 psi | 64% | 2661 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 45,194 psi | 68% | 2762 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,611 psi | 61% | 2657 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 80% | 53,185 psi | 80% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,342 psi | 74% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,215 psi | 53% | 2526 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 48,704 psi | 73% | 2805 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,450 psi | 59% | 2667 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 41,495 psi | 62% | 2753 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 88% | 41,843 psi | 63% | 2743 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 94% | 45,310 psi | 68% | 2854 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,675 psi | 73% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,763 psi | 76% | 2874 fps | 99.8% |
| Winchester StaBALL HD | 65.5 gr | 80% | 31,850 psi | 48% | 2612 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,144 psi | 56% | 2579 fps | 95.9% |
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 81 powders for 7 mm STW loaded with the .284 | 150gr | Peregrine VLR-4. Hodgdon Retumbo delivers the highest muzzle velocity at 3,173 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,173 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 1:9.0 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, Winchester StaBALL HD rank at the top here: for 7 mm STW with the .284 | 150gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.