Load Specifications
Load data in caliber 7 mm STW with .284 | 150gr | Nosler Partition bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H1000, Hodgdon Retumbo 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>> | 92% | 59,596 psi | 89% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 60,118 psi | 90% | 2982 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 58,653 psi | 88% | 3064 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 88% | 57,116 psi | 86% | 2992 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 59,480 psi | 89% | 3061 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 57,551 psi | 86% | 3025 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,156 psi | 78% | 2986 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,217 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,681 psi | 85% | 2979 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 59,727 psi | 90% | 3054 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,421 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 57,348 psi | 86% | 3031 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 58,320 psi | 87% | 3054 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,216 psi | 83% | 3045 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 60,133 psi | 90% | 3015 fps | 97.9% |
| Bofors RP15 | <<locked>> | 94% | 58,639 psi | 88% | 3038 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 57,203 psi | 86% | 3038 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 59,727 psi | 90% | 3054 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,464 psi | 86% | 2927 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 59,451 psi | 89% | 3054 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 57,769 psi | 87% | 2986 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,785 psi | 90% | 2995 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 58,769 psi | 88% | 2995 fps | 99.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 57,595 psi | 86% | 2976 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,566 psi | 86% | 2907 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 60,278 psi | 90% | 3169 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,639 psi | 88% | 3018 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,478 psi | 56% | 1903 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 59,727 psi | 90% | 2969 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,929 psi | 88% | 2949 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 60,292 psi | 90% | 2972 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 59,132 psi | 89% | 2972 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 57,566 psi | 86% | 3045 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,500 psi | 71% | 2890 fps | 98.3% |
| Lovex S065 | <<locked>> | 84% | 59,857 psi | 90% | 2946 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,363 psi | 87% | 2946 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,188 psi | 86% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,363 psi | 86% | 2972 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 48,283 psi | 72% | 2923 fps | 99.7% |
| Norma MRP | <<locked>> | 90% | 59,828 psi | 90% | 3074 fps | 100% |
| Norma URP | <<locked>> | 84% | 58,204 psi | 87% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 58,827 psi | 88% | 3064 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 57,188 psi | 86% | 2969 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 57,319 psi | 86% | 2992 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 57% | 1946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 60,350 psi | 90% | 3005 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 59,161 psi | 89% | 3038 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 57,217 psi | 86% | 3100 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 56,695 psi | 85% | 3058 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 57,928 psi | 87% | 2959 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 90% | 60,249 psi | 90% | 3028 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,464 psi | 86% | 2927 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,857 psi | 90% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,363 psi | 87% | 2946 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 59,088 psi | 89% | 2904 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 59,814 psi | 90% | 3025 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 59,770 psi | 90% | 2953 fps | 99.2% |
| Somchem S365 | <<locked>> | 86% | 59,466 psi | 89% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,840 psi | 85% | 2943 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 60,133 psi | 90% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 59,770 psi | 90% | 2953 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,637 psi | 85% | 2923 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 98% | 59,770 psi | 90% | 2992 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 84% | 58,987 psi | 88% | 2959 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 59,292 psi | 89% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 59,306 psi | 89% | 3074 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 96% | 59,944 psi | 90% | 3058 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 57,217 psi | 86% | 3061 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 58,349 psi | 87% | 3117 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 59,567 psi | 89% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,769 psi | 87% | 2986 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 56,768 psi | 85% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,855 psi | 85% | 2940 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% | 39,639 psi | 59% | 2625 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 52,446 psi | 79% | 2874 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 44,092 psi | 66% | 2802 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 43,671 psi | 65% | 2756 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 39,146 psi | 59% | 2687 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 88% | 38,058 psi | 57% | 2654 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 86% | 32,474 psi | 49% | 2559 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,140 psi | 75% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,584 psi | 65% | 2746 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,711 psi | 60% | 2694 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,319 psi | 57% | 2648 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,127 psi | 50% | 2566 fps | 98.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,076 psi | 65% | 2805 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 51,111 psi | 77% | 2972 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 49,719 psi | 75% | 2841 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 36,825 psi | 55% | 2625 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 37,826 psi | 57% | 2671 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 39,711 psi | 60% | 2694 fps | 97% |
| Bofors RP7 | <<locked>> | 80% | 53,969 psi | 81% | 2874 fps | 99.9% |
| Hodgdon H1000 | 69.9 gr | 84% | 36,274 psi | 54% | 2615 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 54,027 psi | 81% | 2930 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 56,173 psi | 84% | 2943 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 41,669 psi | 62% | 2690 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,988 psi | 61% | 2677 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,253 psi | 71% | 2756 fps | 100% |
| Hodgdon Retumbo | 68 gr | 82% | 34,679 psi | 52% | 2654 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 54,491 psi | 82% | 2959 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 42% | 1703 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,429 psi | 74% | 2808 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 55,434 psi | 83% | 2897 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,603 psi | 74% | 2815 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,004 psi | 64% | 2690 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 82% | 40,509 psi | 61% | 2726 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 94% | 38,667 psi | 58% | 2710 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 52,939 psi | 79% | 2844 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,343 psi | 77% | 2838 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 34,229 psi | 51% | 2503 fps | 97.6% |
| Norma 204 | <<locked>> | 80% | 50,053 psi | 75% | 2854 fps | 99% |
| Norma 217 | <<locked>> | 90% | 33,939 psi | 51% | 2612 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 41,872 psi | 63% | 2762 fps | 98.7% |
| Norma URP | <<locked>> | 80% | 51,010 psi | 76% | 2858 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,478 psi | 56% | 2664 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 50,038 psi | 75% | 2858 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,663 psi | 50% | 2546 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,689 psi | 43% | 1742 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,721 psi | 79% | 2894 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,981 psi | 76% | 2913 fps | 100% |
| ReloadSwiss RS 76 | 71 gr | 80% | 31,560 psi | 47% | 2556 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 41,669 psi | 62% | 2782 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 44,686 psi | 67% | 2730 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 43,076 psi | 65% | 2736 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 53,969 psi | 81% | 2874 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,939 psi | 79% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,343 psi | 77% | 2838 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,909 psi | 78% | 2795 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,728 psi | 64% | 2730 fps | 97.8% |
| Somchem S361 | <<locked>> | 80% | 45,571 psi | 68% | 2717 fps | 96.7% |
| Somchem S365 | <<locked>> | 80% | 48,617 psi | 73% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,758 psi | 66% | 2717 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 80% | 56,246 psi | 84% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 52,402 psi | 79% | 2848 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,927 psi | 57% | 2585 fps | 97% |
| Vihtavuori N170 | <<locked>> | 96% | 55,840 psi | 84% | 2933 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 51,880 psi | 78% | 2854 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,844 psi | 64% | 2730 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,742 psi | 63% | 2753 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 84% | 39,639 psi | 59% | 2687 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 92% | 46,021 psi | 69% | 2861 fps | 96% |
| Vihtavuori N570 | <<locked>> | 96% | 50,517 psi | 76% | 2982 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,967 psi | 78% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 54,027 psi | 81% | 2930 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,578 psi | 53% | 2687 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,001 psi | 60% | 2638 fps | 97% |
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 78 powders for 7 mm STW loaded with the .284 | 150gr | Nosler Partition. Hodgdon Retumbo delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,903 fps to 3,169 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 1:11.5 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 H1000, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm STW with the .284 | 150gr | Nosler Partition they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, Lovex D100 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.