Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:160 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm STW load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:97 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:66,717 psi
Recommended Twist Rate:1:11.0
Load data in caliber 7 mm STW with .284 | 160gr | Peregrine Bushmaster (VRG-3) bullet and 147 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.
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>> | 90% | 56,333 psi | 84% | 2841 fps | 100% |
| Accurate 3100 | <<locked>> | 92% | 60,263 psi | 90% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,913 psi | 85% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,710 psi | 85% | 2861 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 58,291 psi | 87% | 2992 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 59,741 psi | 90% | 3005 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 90% | 59,567 psi | 89% | 3002 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 58,218 psi | 87% | 2933 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 58,044 psi | 87% | 2930 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 56,420 psi | 85% | 2943 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 90% | 56,231 psi | 84% | 2940 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 58,827 psi | 88% | 2972 fps | 99.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 58,668 psi | 88% | 2969 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,140 psi | 77% | 2940 fps | 96.5% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,039 psi | 77% | 2936 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,127 psi | 80% | 2930 fps | 100% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,924 psi | 79% | 2923 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 58,378 psi | 88% | 2927 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 58,175 psi | 87% | 2927 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,262 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,276 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,711 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,522 psi | 86% | 2917 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,666 psi | 85% | 2933 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,478 psi | 85% | 2933 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,291 psi | 87% | 2897 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,088 psi | 87% | 2894 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,610 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,392 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 59,480 psi | 89% | 2989 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 59,277 psi | 89% | 2986 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,478 psi | 85% | 2995 fps | 97.7% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,362 psi | 84% | 2992 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,450 psi | 86% | 2907 fps | 98% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,101 psi | 86% | 2900 fps | 97.9% |
| Bofors RP15 | <<locked>> | 94% | 59,843 psi | 90% | 2979 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 59,654 psi | 89% | 2979 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 58,363 psi | 87% | 2982 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 58,160 psi | 87% | 2979 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 56,666 psi | 85% | 2933 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 56,478 psi | 85% | 2933 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 58,349 psi | 87% | 2864 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 58,175 psi | 87% | 2861 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 56,463 psi | 85% | 2936 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 96% | 56,304 psi | 84% | 2933 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 58,450 psi | 88% | 2917 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 58,523 psi | 88% | 2917 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 59,712 psi | 90% | 2936 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 90% | 59,524 psi | 89% | 2933 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,508 psi | 88% | 2917 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,320 psi | 87% | 2917 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,465 psi | 88% | 2841 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,262 psi | 87% | 2838 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,711 psi | 87% | 3054 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,522 psi | 86% | 3051 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 59,872 psi | 90% | 2959 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 59,654 psi | 89% | 2956 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 56% | 1844 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,492 psi | 56% | 1844 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,000 psi | 85% | 2854 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,840 psi | 85% | 2854 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 59,727 psi | 90% | 2887 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 59,553 psi | 89% | 2884 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,363 psi | 86% | 2854 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,159 psi | 86% | 2854 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 59,944 psi | 90% | 2913 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 90% | 59,785 psi | 90% | 2910 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 58,711 psi | 88% | 2982 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 92% | 58,508 psi | 88% | 2979 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,428 psi | 73% | 2838 fps | 98.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,269 psi | 72% | 2835 fps | 98.9% |
| Lovex S065 | <<locked>> | 82% | 56,855 psi | 85% | 2828 fps | 100% |
| Lovex S065 | <<locked>> | 82% | 56,898 psi | 85% | 2828 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 59,059 psi | 89% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,856 psi | 88% | 2877 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,972 psi | 87% | 2861 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,827 psi | 87% | 2858 fps | 100% |
| Norma 204 | <<locked>> | 84% | 58,349 psi | 87% | 2913 fps | 99.9% |
| Norma 204 | <<locked>> | 84% | 58,189 psi | 87% | 2910 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 49,327 psi | 74% | 2867 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 49,153 psi | 74% | 2864 fps | 99.9% |
| Norma MRP | <<locked>> | 88% | 56,768 psi | 85% | 2953 fps | 100% |
| Norma MRP | <<locked>> | 88% | 56,565 psi | 85% | 2949 fps | 100% |
| Norma URP | <<locked>> | 84% | 59,088 psi | 89% | 2900 fps | 100% |
| Norma URP | <<locked>> | 84% | 58,856 psi | 88% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 60,205 psi | 90% | 3009 fps | 99.9% |
| Ramshot Grand | <<locked>> | 92% | 60,002 psi | 90% | 3005 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 58,189 psi | 87% | 2910 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 57,986 psi | 87% | 2904 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 58,581 psi | 88% | 2933 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 58,131 psi | 87% | 2930 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 58% | 1890 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,334 psi | 57% | 1886 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,276 psi | 86% | 2887 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,116 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 60,249 psi | 90% | 2969 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 60,046 psi | 90% | 2969 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,798 psi | 88% | 3045 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,624 psi | 88% | 3041 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 58,146 psi | 87% | 3005 fps | 99.4% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 57,725 psi | 87% | 3002 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 58,885 psi | 88% | 2904 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 88% | 58,726 psi | 88% | 2900 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 88% | 57,479 psi | 86% | 2913 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 57,276 psi | 86% | 2910 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,349 psi | 87% | 2864 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,175 psi | 87% | 2861 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,855 psi | 85% | 2828 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,898 psi | 85% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 59,059 psi | 89% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,856 psi | 88% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 59,814 psi | 90% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 59,596 psi | 89% | 2835 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,072 psi | 86% | 2910 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,869 psi | 85% | 2904 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 56,521 psi | 85% | 2835 fps | 99.2% |
| Somchem S361 | <<locked>> | 86% | 56,594 psi | 85% | 2835 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 56,637 psi | 85% | 2848 fps | 100% |
| Somchem S365 | <<locked>> | 86% | 60,292 psi | 90% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,682 psi | 86% | 2881 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,537 psi | 86% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,884 psi | 85% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,681 psi | 85% | 2835 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,682 psi | 86% | 2864 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,508 psi | 86% | 2861 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 56,478 psi | 85% | 2877 fps | 96.1% |
| Vihtavuori N170 | <<locked>> | 96% | 56,347 psi | 84% | 2874 fps | 96% |
| Vihtavuori N550 | <<locked>> | 84% | 59,814 psi | 90% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 59,611 psi | 89% | 2887 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 60,278 psi | 90% | 2927 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 60,060 psi | 90% | 2923 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,333 psi | 84% | 2953 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 90% | 60,234 psi | 90% | 3012 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 94% | 56,884 psi | 85% | 2940 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 56,710 psi | 85% | 2936 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 58,537 psi | 88% | 3009 fps | 99.1% |
| Vihtavuori N568 | <<locked>> | 98% | 58,378 psi | 88% | 3005 fps | 99.1% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 59,886 psi | 90% | 3071 fps | 98% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 59,451 psi | 89% | 3064 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,507 psi | 85% | 2789 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,333 psi | 84% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 58,697 psi | 88% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 58,523 psi | 88% | 2917 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 58,218 psi | 87% | 2982 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 57,986 psi | 87% | 2982 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,740 psi | 87% | 2877 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,551 psi | 86% | 2874 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% | 39,972 psi | 60% | 2566 fps | 99.4% |
| Accurate 3100 | <<locked>> | 80% | 39,784 psi | 60% | 2562 fps | 99.4% |
| Accurate 4350 | <<locked>> | 80% | 53,171 psi | 80% | 2808 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 52,968 psi | 79% | 2805 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 43,772 psi | 66% | 2740 fps | 97.6% |
| Accurate MAGPRO | <<locked>> | 80% | 41,524 psi | 62% | 2684 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 80% | 41,365 psi | 62% | 2680 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 44,295 psi | 66% | 2697 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 80% | 44,106 psi | 66% | 2697 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 80% | 39,639 psi | 59% | 2635 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 80% | 39,465 psi | 59% | 2628 fps | 96.2% |
| ADI AR 2217 | <<locked>> | 86% | 36,027 psi | 54% | 2546 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 86% | 35,882 psi | 54% | 2543 fps | 95.2% |
| ADI AR 2218 | <<locked>> | 98% | 47,543 psi | 71% | 2867 fps | 95.3% |
| ADI AR 2218 | <<locked>> | 98% | 47,413 psi | 71% | 2864 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 84% | 30,516 psi | 46% | 2444 fps | 96% |
| ADI AR 2225 | <<locked>> | 84% | 30,400 psi | 46% | 2441 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,730 psi | 67% | 2700 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,556 psi | 67% | 2697 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,140 psi | 77% | 2815 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,923 psi | 76% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,309 psi | 66% | 2694 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,150 psi | 66% | 2690 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,176 psi | 60% | 2638 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,016 psi | 60% | 2635 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,769 psi | 58% | 2585 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,754 psi | 58% | 2585 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,431 psi | 50% | 2513 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,272 psi | 50% | 2507 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,816 psi | 66% | 2746 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,627 psi | 65% | 2743 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 48,457 psi | 73% | 2858 fps | 95.8% |
| Alliant Reloder-33 | <<locked>> | 96% | 48,283 psi | 72% | 2854 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,268 psi | 71% | 2730 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,137 psi | 71% | 2726 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 37,362 psi | 56% | 2575 fps | 96.7% |
| Bofors RP15 | <<locked>> | 80% | 37,188 psi | 56% | 2572 fps | 96.6% |
| Bofors RP30 | <<locked>> | 84% | 35,621 psi | 53% | 2556 fps | 95.3% |
| Bofors RP30 | <<locked>> | 84% | 35,592 psi | 53% | 2552 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 40,176 psi | 60% | 2638 fps | 97.7% |
| Bofors RP5 | <<locked>> | 80% | 40,016 psi | 60% | 2635 fps | 97.7% |
| Bofors RP7 | <<locked>> | 80% | 54,752 psi | 82% | 2812 fps | 100% |
| Bofors RP7 | <<locked>> | 80% | 54,549 psi | 82% | 2808 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 34,258 psi | 51% | 2503 fps | 95.2% |
| Hodgdon H1000 | <<locked>> | 82% | 34,098 psi | 51% | 2500 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 54,824 psi | 82% | 2864 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 54,607 psi | 82% | 2861 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 42,206 psi | 63% | 2638 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 80% | 42,032 psi | 63% | 2635 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,481 psi | 62% | 2625 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,336 psi | 62% | 2618 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,819 psi | 72% | 2690 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,819 psi | 72% | 2690 fps | 100% |
| Hodgdon Retumbo | 65.5 gr | 80% | 32,605 psi | 49% | 2536 fps | 95.5% |
| Hodgdon Retumbo | 65.5 gr | 80% | 32,445 psi | 49% | 2530 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 55,564 psi | 83% | 2897 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 55,376 psi | 83% | 2894 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,992 psi | 42% | 1650 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,079 psi | 42% | 1650 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,009 psi | 75% | 2746 fps | 99.8% |
| IMR 4350 | <<locked>> | 80% | 49,850 psi | 75% | 2743 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 56,115 psi | 84% | 2835 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 80% | 55,927 psi | 84% | 2831 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,154 psi | 75% | 2749 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,169 psi | 75% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,468 psi | 65% | 2635 fps | 97% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,308 psi | 65% | 2631 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 80% | 38,189 psi | 57% | 2608 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 80% | 38,189 psi | 57% | 2608 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 92% | 36,521 psi | 55% | 2595 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 92% | 36,361 psi | 55% | 2589 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 53,388 psi | 80% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 53,403 psi | 80% | 2776 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,025 psi | 78% | 2776 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,837 psi | 78% | 2776 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,185 psi | 51% | 2438 fps | 98.1% |
| Lovex S071 | <<locked>> | 80% | 34,026 psi | 51% | 2434 fps | 98.1% |
| Norma 204 | <<locked>> | 80% | 50,749 psi | 76% | 2795 fps | 99.4% |
| Norma 204 | <<locked>> | 80% | 50,589 psi | 76% | 2792 fps | 99.4% |
| Norma 217 | <<locked>> | 88% | 31,908 psi | 48% | 2497 fps | 95.9% |
| Norma 217 | <<locked>> | 88% | 31,749 psi | 48% | 2493 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 42,525 psi | 64% | 2710 fps | 99.2% |
| Norma MRP | <<locked>> | 80% | 42,322 psi | 63% | 2703 fps | 99.2% |
| Norma URP | <<locked>> | 80% | 51,837 psi | 78% | 2795 fps | 100% |
| Norma URP | <<locked>> | 80% | 51,619 psi | 77% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,985 psi | 57% | 2615 fps | 96.2% |
| Ramshot Grand | <<locked>> | 80% | 38,000 psi | 57% | 2615 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 80% | 50,749 psi | 76% | 2799 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 50,575 psi | 76% | 2792 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,040 psi | 51% | 2493 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 80% | 33,881 psi | 51% | 2490 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,805 psi | 43% | 1693 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,718 psi | 43% | 1690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,447 psi | 80% | 2831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,272 psi | 80% | 2828 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,996 psi | 78% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,779 psi | 78% | 2851 fps | 100% |
| ReloadSwiss RS 76 | 70.2 gr | 80% | 31,720 psi | 48% | 2507 fps | 96.5% |
| ReloadSwiss RS 76 | 70.2 gr | 80% | 31,705 psi | 48% | 2503 fps | 96.5% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 39,160 psi | 59% | 2664 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 42,279 psi | 63% | 2730 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 45,208 psi | 68% | 2674 fps | 97.9% |
| Rottweil R 904 | <<locked>> | 80% | 45,223 psi | 68% | 2674 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 80% | 43,758 psi | 66% | 2680 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 43,584 psi | 65% | 2677 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 80% | 54,752 psi | 82% | 2812 fps | 100% |
| Rottweil R 907 | <<locked>> | 80% | 54,549 psi | 82% | 2808 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,388 psi | 80% | 2779 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,403 psi | 80% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,025 psi | 78% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,837 psi | 78% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,373 psi | 79% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,185 psi | 78% | 2730 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,424 psi | 65% | 2677 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,250 psi | 65% | 2671 fps | 98.5% |
| Somchem S361 | <<locked>> | 80% | 46,122 psi | 69% | 2661 fps | 97.5% |
| Somchem S361 | <<locked>> | 80% | 45,963 psi | 69% | 2657 fps | 97.4% |
| Somchem S365 | <<locked>> | 80% | 49,240 psi | 74% | 2743 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 49,052 psi | 74% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,150 psi | 66% | 2657 fps | 99.2% |
| Somchem S385 | <<locked>> | 80% | 43,990 psi | 66% | 2654 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 53,301 psi | 80% | 2785 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 53,098 psi | 80% | 2782 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,464 psi | 58% | 2536 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 80% | 38,276 psi | 57% | 2530 fps | 97.7% |
| Vihtavuori N170 | <<locked>> | 94% | 52,750 psi | 79% | 2815 fps | 95.2% |
| Vihtavuori N170 | <<locked>> | 94% | 52,562 psi | 79% | 2812 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 52,489 psi | 79% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 52,330 psi | 78% | 2785 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,207 psi | 65% | 2664 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,004 psi | 64% | 2661 fps | 100% |
| Vihtavuori N560 | 68 gr | 80% | 42,366 psi | 64% | 2700 fps | 96.6% |
| Vihtavuori N560 | 68 gr | 80% | 42,206 psi | 63% | 2697 fps | 96.5% |
| Vihtavuori N565 | <<locked>> | 82% | 37,333 psi | 56% | 2572 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 82% | 37,144 psi | 56% | 2566 fps | 95% |
| Vihtavuori N568 | <<locked>> | 90% | 43,555 psi | 65% | 2746 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 90% | 43,395 psi | 65% | 2743 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 94% | 47,761 psi | 72% | 2861 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 94% | 47,587 psi | 71% | 2861 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,576 psi | 79% | 2736 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,620 psi | 79% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 54,824 psi | 82% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 54,839 psi | 82% | 2864 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,318 psi | 54% | 2628 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,085 psi | 54% | 2625 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,625 psi | 61% | 2585 fps | 97.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,480 psi | 61% | 2585 fps | 97.8% |
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 147 powders for 7 mm STW loaded with the .284 | 160gr | Peregrine Bushmaster (VRG-3). Vihtavuori N570 delivers the highest muzzle velocity at 3,071 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,071 fps. ADI AR 2217 gives the best case fill at 100 %, and 147 of the 147 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 160.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2217, ADI AR 2218 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 | 160gr | Peregrine Bushmaster (VRG-3) 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.