Load Specifications
Load data in caliber 7 mm STW with .284 | 165gr | Peregrine VLR-5 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 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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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% | 58,610 psi | 88% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 59,480 psi | 89% | 2854 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,870 psi | 87% | 2936 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 88% | 56,681 psi | 85% | 2867 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 58,856 psi | 88% | 2936 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,942 psi | 85% | 2904 fps | 99.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,343 psi | 77% | 2864 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,884 psi | 85% | 2864 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,884 psi | 85% | 2864 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,985 psi | 85% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 60,147 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,958 psi | 88% | 2927 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,797 psi | 85% | 2838 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,840 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,551 psi | 86% | 2923 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,331 psi | 81% | 2927 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 59,698 psi | 89% | 2897 fps | 98.4% |
| Bofors RP15 | <<locked>> | 94% | 58,102 psi | 87% | 2917 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,318 psi | 84% | 2913 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 58,958 psi | 88% | 2927 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,971 psi | 85% | 2802 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,885 psi | 88% | 2930 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,188 psi | 86% | 2858 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 59,451 psi | 89% | 2871 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 58,218 psi | 87% | 2871 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,971 psi | 85% | 2854 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,087 psi | 86% | 2779 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 59,611 psi | 89% | 3045 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,218 psi | 87% | 2897 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,347 psi | 56% | 1801 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 59,379 psi | 89% | 2848 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,653 psi | 88% | 2825 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 59,698 psi | 89% | 2844 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,697 psi | 88% | 2851 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 92% | 57,101 psi | 86% | 2920 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,760 psi | 70% | 2776 fps | 98.7% |
| Lovex S065 | <<locked>> | 84% | 59,495 psi | 89% | 2818 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,812 psi | 87% | 2822 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 60,205 psi | 90% | 2848 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,826 psi | 85% | 2848 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 47,340 psi | 71% | 2799 fps | 99.9% |
| Norma MRP | <<locked>> | 90% | 59,117 psi | 89% | 2943 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,740 psi | 87% | 2838 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 58,117 psi | 87% | 2940 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 56,608 psi | 85% | 2844 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,565 psi | 85% | 2871 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,218 psi | 57% | 1844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 59,770 psi | 90% | 2877 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 58,653 psi | 88% | 2910 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,637 psi | 85% | 2979 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 60,292 psi | 90% | 3002 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 88% | 57,421 psi | 86% | 2838 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 90% | 59,654 psi | 89% | 2900 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 56,971 psi | 85% | 2802 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 59,495 psi | 89% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,812 psi | 87% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,421 psi | 88% | 2776 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 59,219 psi | 89% | 2897 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 59,161 psi | 89% | 2831 fps | 99.5% |
| Somchem S365 | <<locked>> | 86% | 58,929 psi | 88% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 59,930 psi | 90% | 2867 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 59,437 psi | 89% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 59,408 psi | 89% | 2828 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 59,944 psi | 90% | 2854 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 59,030 psi | 88% | 2874 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 84% | 58,450 psi | 88% | 2831 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,639 psi | 88% | 2864 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,682 psi | 88% | 2949 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 96% | 59,074 psi | 89% | 2933 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 56,550 psi | 85% | 2940 fps | 98.9% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,624 psi | 86% | 2999 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 59,132 psi | 89% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,450 psi | 86% | 2861 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 56,144 psi | 84% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 60,365 psi | 90% | 2874 fps | 100% |
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% | 38,870 psi | 58% | 2510 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 51,880 psi | 78% | 2749 fps | 100% |
| Accurate MAGPRO | 66.4 gr | 80% | 40,263 psi | 60% | 2621 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 43,149 psi | 65% | 2638 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 80% | 38,653 psi | 58% | 2575 fps | 96% |
| ADI AR 2217 | <<locked>> | 88% | 37,594 psi | 56% | 2549 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 84% | 29,689 psi | 45% | 2392 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,656 psi | 65% | 2641 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,656 psi | 65% | 2641 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,748 psi | 75% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,221 psi | 65% | 2635 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,117 psi | 59% | 2582 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,710 psi | 57% | 2533 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,445 psi | 49% | 2454 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,395 psi | 64% | 2687 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 46,499 psi | 70% | 2789 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 46,180 psi | 69% | 2671 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 36,260 psi | 54% | 2516 fps | 96.5% |
| Bofors RP30 | <<locked>> | 84% | 34,519 psi | 52% | 2500 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 39,117 psi | 59% | 2582 fps | 97.6% |
| Bofors RP7 | <<locked>> | 80% | 53,548 psi | 80% | 2749 fps | 100% |
| Hodgdon H1000 | <<locked>> | 84% | 35,621 psi | 53% | 2507 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 53,447 psi | 80% | 2802 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 55,869 psi | 84% | 2818 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 41,220 psi | 62% | 2579 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,495 psi | 61% | 2566 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,673 psi | 70% | 2631 fps | 100% |
| Hodgdon Retumbo | 62.8 gr | 80% | 31,676 psi | 47% | 2477 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 54,085 psi | 81% | 2835 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,079 psi | 42% | 1614 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,921 psi | 73% | 2687 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,940 psi | 82% | 2772 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,095 psi | 74% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,482 psi | 64% | 2575 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 80% | 37,159 psi | 56% | 2549 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 92% | 35,331 psi | 53% | 2536 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 52,373 psi | 79% | 2720 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,836 psi | 76% | 2717 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,315 psi | 50% | 2385 fps | 98% |
| Norma 204 | <<locked>> | 80% | 49,559 psi | 74% | 2733 fps | 99.3% |
| Norma 217 | <<locked>> | 88% | 30,835 psi | 46% | 2441 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 41,278 psi | 62% | 2648 fps | 99.1% |
| Norma URP | <<locked>> | 80% | 50,575 psi | 76% | 2733 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,854 psi | 55% | 2556 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 49,472 psi | 74% | 2736 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,895 psi | 49% | 2438 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,732 psi | 43% | 1654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,156 psi | 78% | 2772 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,488 psi | 76% | 2792 fps | 100% |
| ReloadSwiss RS 76 | 67.2 gr | 80% | 30,719 psi | 46% | 2448 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,683 psi | 61% | 2667 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 44,295 psi | 66% | 2618 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 80% | 42,612 psi | 64% | 2621 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 80% | 53,548 psi | 80% | 2749 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,373 psi | 79% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,836 psi | 76% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,285 psi | 77% | 2674 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,279 psi | 63% | 2618 fps | 98.4% |
| Somchem S361 | <<locked>> | 80% | 45,020 psi | 67% | 2605 fps | 97.3% |
| Somchem S365 | <<locked>> | 80% | 47,921 psi | 72% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,105 psi | 65% | 2602 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 80% | 55,825 psi | 84% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 52,083 psi | 78% | 2726 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,449 psi | 56% | 2477 fps | 97.6% |
| Vihtavuori N170 | <<locked>> | 96% | 54,911 psi | 82% | 2812 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 51,227 psi | 77% | 2726 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,916 psi | 63% | 2605 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,205 psi | 62% | 2641 fps | 96.4% |
| Vihtavuori N565 | <<locked>> | 84% | 38,928 psi | 58% | 2579 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 90% | 42,061 psi | 63% | 2684 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 96% | 49,603 psi | 74% | 2864 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,343 psi | 77% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,693 psi | 80% | 2805 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,867 psi | 52% | 2569 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,508 psi | 59% | 2530 fps | 97.6% |
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 | 165gr | Peregrine VLR-5. Hodgdon Retumbo delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,045 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 165.0 gr projectile in 0.284" calls for a 1:8.5 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. Hodgdon Retumbo, ReloadSwiss RS 76, Accurate MAGPRO rank at the top here: for 7 mm STW with the .284 | 165gr | Peregrine VLR-5 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.