Load Specifications
Bullet Manufacturer:SAKO
Bullet Weight:170 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm Backcountry load data
Case Length (l3):2.417"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:73 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:20"
Max. allowed Pressure:79,916 psi
Recommended Twist Rate:1:11.5
Load data in caliber 7 mm Backcountry with .284 | 170gr | Sako Hammerhead bullet and 125 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and Winchester 760.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 70,271 psi | 88% | 2625 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 71,823 psi | 90% | 2664 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 68,559 psi | 86% | 2687 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 68,487 psi | 86% | 2713 fps | 99.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 59,596 psi | 75% | 2661 fps | 99.9% |
| Accurate 4064 | <<locked>> | 90% | 71,997 psi | 90% | 2717 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 70,459 psi | 88% | 2802 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 61,989 psi | 78% | 2795 fps | 97.1% |
| ADI APS 450 | <<locked>> | 92% | 71,460 psi | 89% | 2142 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 70,126 psi | 88% | 2753 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 71,156 psi | 89% | 2756 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 66,355 psi | 83% | 2799 fps | 99.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 59,669 psi | 75% | 2743 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 68,008 psi | 85% | 2694 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 71,547 psi | 90% | 2657 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 68,806 psi | 86% | 2844 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 68,443 psi | 86% | 2730 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 68,879 psi | 86% | 2756 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 70,604 psi | 88% | 2844 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 68,617 psi | 86% | 2822 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 65,557 psi | 82% | 2785 fps | 99.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 59,016 psi | 74% | 2736 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,941 psi | 70% | 2664 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,399 psi | 61% | 2602 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 65,746 psi | 82% | 2864 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 71,069 psi | 89% | 2782 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,157 psi | 68% | 2661 fps | 97.8% |
| Bofors RP3 | <<locked>> | 90% | 70,416 psi | 88% | 2753 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 59,016 psi | 74% | 2736 fps | 98.7% |
| Bofors RP7 | <<locked>> | 94% | 68,588 psi | 86% | 2746 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 69,038 psi | 86% | 2671 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 69,357 psi | 87% | 2733 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 70,561 psi | 88% | 2776 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 72,127 psi | 90% | 2851 fps | 100% |
| Hodgdon H4350 | <<locked>> | 94% | 70,982 psi | 89% | 2812 fps | 99.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 63,991 psi | 80% | 2743 fps | 97.7% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 62,627 psi | 78% | 2726 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 86% | 70,953 psi | 89% | 2759 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 71,025 psi | 89% | 2769 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 67,994 psi | 85% | 2753 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,529 psi | 59% | 2638 fps | 97.3% |
| Hodgdon Superformance | <<locked>> | 94% | 69,575 psi | 87% | 2851 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 46% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 71,953 psi | 90% | 2759 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 68,052 psi | 85% | 2680 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 70,677 psi | 88% | 2740 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 69,488 psi | 87% | 2736 fps | 100% |
| IMR 4198 | <<locked>> | 82% | 71,286 psi | 89% | 2608 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 70,082 psi | 88% | 2779 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 94% | 70,314 psi | 88% | 2769 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 69,763 psi | 87% | 2782 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 70,677 psi | 88% | 2782 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 64,803 psi | 81% | 2726 fps | 98% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,043 psi | 71% | 2713 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 84% | 68,008 psi | 85% | 2694 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 71,910 psi | 90% | 2730 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 71,721 psi | 90% | 2717 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 70,880 psi | 89% | 2726 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 70,503 psi | 88% | 2759 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 68,559 psi | 86% | 2762 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,443 psi | 62% | 2516 fps | 99% |
| Norma 201 | <<locked>> | 86% | 68,226 psi | 85% | 2694 fps | 100% |
| Norma 202 | <<locked>> | 86% | 69,227 psi | 87% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 90% | 72,287 psi | 90% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 96% | 67,834 psi | 85% | 2792 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 63,135 psi | 79% | 2815 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 72,185 psi | 90% | 2828 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 69,952 psi | 88% | 2776 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,928 psi | 72% | 2740 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 98% | 71,040 psi | 89% | 2838 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,938 psi | 65% | 2621 fps | 98.2% |
| Ramshot TAC | <<locked>> | 84% | 68,748 psi | 86% | 2740 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 84% | 69,401 psi | 87% | 2746 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 68,777 psi | 86% | 2703 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,594 psi | 47% | 1654 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 71,431 psi | 89% | 2713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 70,053 psi | 88% | 2762 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 71,605 psi | 90% | 2831 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 68,226 psi | 85% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 70,256 psi | 88% | 2822 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 68,632 psi | 86% | 2858 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,500 psi | 59% | 2631 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 84% | 68,792 psi | 86% | 2661 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 69,140 psi | 87% | 2694 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 70,271 psi | 88% | 2746 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 67,878 psi | 85% | 2769 fps | 98.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 65,006 psi | 81% | 2776 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 94% | 68,588 psi | 86% | 2746 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 96% | 70,503 psi | 88% | 2759 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 86% | 71,910 psi | 90% | 2730 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 70,880 psi | 89% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 68,559 psi | 86% | 2762 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 72,214 psi | 90% | 2385 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 67,907 psi | 85% | 2756 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 68,168 psi | 85% | 2723 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 68,458 psi | 86% | 2730 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 68,719 psi | 86% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 70,155 psi | 88% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 70,851 psi | 89% | 2726 fps | 100% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 64,484 psi | 81% | 2769 fps | 99.3% |
| Somchem S321 | <<locked>> | 82% | 70,314 psi | 88% | 2726 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 72,301 psi | 90% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 67,820 psi | 85% | 2703 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 69,430 psi | 87% | 2736 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 70,634 psi | 88% | 2772 fps | 98.5% |
| Somchem S365 | <<locked>> | 98% | 67,994 psi | 85% | 2779 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 65,441 psi | 82% | 2746 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 84% | 71,547 psi | 90% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 69,169 psi | 87% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 69,937 psi | 88% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 69,966 psi | 88% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 71,315 psi | 89% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 70,256 psi | 88% | 2772 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,058 psi | 71% | 2625 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 84% | 69,183 psi | 87% | 2697 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 72,185 psi | 90% | 2710 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 69,096 psi | 86% | 2779 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 62,656 psi | 78% | 2743 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 63,048 psi | 79% | 2812 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 70,677 psi | 88% | 2743 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 70,663 psi | 88% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 67,805 psi | 85% | 2802 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,330 psi | 65% | 2733 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 69,125 psi | 86% | 2736 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 62,047 psi | 78% | 2697 fps | 98.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 62,511 psi | 78% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 55,825 psi | 70% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 64,455 psi | 81% | 2641 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 52,924 psi | 66% | 2507 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 34,664 psi | 43% | 2238 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 52,968 psi | 66% | 2493 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,060 psi | 51% | 2382 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 53,838 psi | 67% | 2674 fps | 95.4% |
| ADI APS 450 | <<locked>> | 80% | 58,682 psi | 73% | 1988 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 58,247 psi | 73% | 2608 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 49,385 psi | 62% | 2470 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 44,831 psi | 56% | 2470 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 48,849 psi | 61% | 2566 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 60,278 psi | 75% | 2602 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 63,034 psi | 79% | 2569 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 55,695 psi | 70% | 2677 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,415 psi | 63% | 2497 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,737 psi | 67% | 2562 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,552 psi | 49% | 2385 fps | 98.8% |
| Alliant Reloder-17 | 51.5 gr | 80% | 45,223 psi | 57% | 2503 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 44,628 psi | 56% | 2464 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 45,339 psi | 57% | 2513 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,211 psi | 37% | 2159 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 35,186 psi | 44% | 2329 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 82% | 33,736 psi | 42% | 2323 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 58,276 psi | 73% | 2628 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 44,454 psi | 56% | 2497 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 50,937 psi | 64% | 2507 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 45,339 psi | 57% | 2513 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 44,570 psi | 56% | 2392 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 61,032 psi | 76% | 2579 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 60,872 psi | 76% | 2631 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 51,271 psi | 64% | 2523 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 42,902 psi | 54% | 2425 fps | 96.9% |
| Hodgdon H4350 | <<locked>> | 80% | 45,571 psi | 57% | 2441 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 52,402 psi | 66% | 2579 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,271 psi | 64% | 2562 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 58,958 psi | 74% | 2618 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,246 psi | 47% | 2290 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 55,999 psi | 70% | 2605 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,640 psi | 52% | 2513 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 41,684 psi | 52% | 2434 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,441 psi | 34% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 56,159 psi | 70% | 2569 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 59,973 psi | 75% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,967 psi | 65% | 2503 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,317 psi | 68% | 2536 fps | 99.1% |
| IMR 4198 | <<locked>> | 80% | 67,399 psi | 84% | 2569 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,030 psi | 50% | 2323 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,905 psi | 57% | 2418 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 39,349 psi | 49% | 2336 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 55,114 psi | 69% | 2585 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,531 psi | 63% | 2516 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 96% | 50,053 psi | 63% | 2602 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 60,278 psi | 75% | 2602 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 59,161 psi | 74% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 56,724 psi | 71% | 2536 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 52,591 psi | 66% | 2503 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,410 psi | 54% | 2372 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 41,814 psi | 52% | 2359 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 36,013 psi | 45% | 2267 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 56,840 psi | 71% | 2552 fps | 100% |
| Norma 202 | <<locked>> | 80% | 57,667 psi | 72% | 2552 fps | 100% |
| Norma 203B | <<locked>> | 80% | 53,069 psi | 66% | 2546 fps | 100% |
| Norma 204 | <<locked>> | 84% | 45,368 psi | 57% | 2461 fps | 95.6% |
| Norma MRP | <<locked>> | 86% | 38,870 psi | 49% | 2411 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 40,654 psi | 51% | 2375 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 53,693 psi | 67% | 2572 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,717 psi | 58% | 2556 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,378 psi | 49% | 2359 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 41,655 psi | 52% | 2438 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 60,292 psi | 75% | 2635 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 80% | 60,684 psi | 76% | 2641 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 64,556 psi | 81% | 2654 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 35% | 1476 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 66,935 psi | 84% | 2664 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,068 psi | 64% | 2507 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 58,639 psi | 73% | 2674 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,008 psi | 60% | 2549 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,727 psi | 51% | 2395 fps | 98.4% |
| ReloadSwiss RS 70 | 52.3 gr | 80% | 39,291 psi | 49% | 2402 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,580 psi | 48% | 2441 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 60,974 psi | 76% | 2572 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 54,157 psi | 68% | 2510 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 48,153 psi | 60% | 2461 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 49,371 psi | 62% | 2503 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 43,888 psi | 55% | 2451 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 44,570 psi | 56% | 2392 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,410 psi | 54% | 2372 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 59,161 psi | 74% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 52,591 psi | 66% | 2503 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,814 psi | 52% | 2359 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 68,821 psi | 86% | 2352 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,226 psi | 62% | 2510 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 59,741 psi | 75% | 2621 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 56,666 psi | 71% | 2582 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 57,319 psi | 72% | 2490 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,747 psi | 61% | 2369 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,525 psi | 53% | 2326 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,497 psi | 54% | 2444 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 65,949 psi | 83% | 2677 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 57,101 psi | 71% | 2487 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 59,205 psi | 74% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 48,080 psi | 60% | 2457 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,633 psi | 63% | 2500 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,144 psi | 46% | 2333 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 41,568 psi | 52% | 2382 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 63,802 psi | 80% | 2526 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 57,943 psi | 73% | 2470 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 54,708 psi | 68% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,911 psi | 69% | 2493 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 46,122 psi | 58% | 2395 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,989 psi | 53% | 2375 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 41,017 psi | 51% | 2362 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 60,785 psi | 76% | 2602 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 53,040 psi | 66% | 2484 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,452 psi | 52% | 2375 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 32,590 psi | 41% | 2231 fps | 96.8% |
| Vihtavuori N560 | <<locked>> | 94% | 51,445 psi | 64% | 2635 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,814 psi | 51% | 2346 fps | 99.8% |
| Winchester 748 | <<locked>> | 80% | 62,250 psi | 78% | 2651 fps | 100% |
| Winchester 760 | 50.4 gr | 80% | 42,902 psi | 54% | 2425 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,904 psi | 32% | 2133 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 57,072 psi | 71% | 2592 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,859 psi | 55% | 2421 fps | 95.3% |
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 125 powders for 7 mm Backcountry loaded with the .284 | 170gr | Sako Hammerhead. Alliant Reloder-26 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,864 fps. Accurate 3100 gives the best case fill at 100 %, and 125 of the 125 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (551 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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. ReloadSwiss RS 70, Alliant Reloder-17, Winchester 760 rank at the top here: for 7 mm Backcountry with the .284 | 170gr | Sako Hammerhead 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.