Load Specifications
Bullet Manufacturer:Barnes
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:1:8.5
Load data in caliber 7 mm Backcountry with .284 | 170gr | Barnes TTSX BT bullet and 135 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Alliant Reloder-17 and ReloadSwiss RS 60.
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>> | 86% | 70,851 psi | 89% | 2615 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 69,966 psi | 88% | 2657 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 71,968 psi | 90% | 2654 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 69,096 psi | 86% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 69,241 psi | 87% | 2700 fps | 99.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,839 psi | 69% | 2585 fps | 99.4% |
| Accurate 4064 | <<locked>> | 92% | 71,823 psi | 90% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 69,792 psi | 87% | 2782 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 70,590 psi | 88% | 2592 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 71,228 psi | 89% | 2625 fps | 100% |
| ADI APS 450 | <<locked>> | 92% | 70,953 psi | 89% | 2106 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 70,459 psi | 88% | 2740 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 71,228 psi | 89% | 2740 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 61,975 psi | 78% | 2723 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,463 psi | 69% | 2661 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 68,530 psi | 86% | 2684 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 71,562 psi | 90% | 2644 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 72,171 psi | 90% | 2792 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 68,705 psi | 86% | 2831 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 68,458 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 69,560 psi | 87% | 2608 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 68,908 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 69,894 psi | 87% | 2825 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 68,284 psi | 85% | 2805 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 60,988 psi | 76% | 2707 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,418 psi | 68% | 2657 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,329 psi | 64% | 2595 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,802 psi | 56% | 2523 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 59,524 psi | 74% | 2782 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 70,822 psi | 89% | 2592 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 71,243 psi | 89% | 2769 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,748 psi | 62% | 2582 fps | 96.6% |
| Bofors RP3 | <<locked>> | 92% | 70,634 psi | 88% | 2740 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,418 psi | 68% | 2657 fps | 97.7% |
| Bofors RP7 | <<locked>> | 96% | 68,966 psi | 86% | 2733 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 69,633 psi | 87% | 2657 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 69,879 psi | 87% | 2723 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 68,632 psi | 86% | 2782 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 69,647 psi | 87% | 2664 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 71,388 psi | 89% | 2694 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 70,764 psi | 89% | 2759 fps | 100% |
| Hodgdon H414 | <<locked>> | 98% | 72,011 psi | 90% | 2835 fps | 100% |
| Hodgdon H4350 | <<locked>> | 96% | 71,112 psi | 89% | 2795 fps | 99.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 59,654 psi | 75% | 2667 fps | 96.6% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 58,262 psi | 73% | 2648 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 71,286 psi | 89% | 2746 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 65,949 psi | 83% | 2700 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 68,008 psi | 85% | 2740 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 69,473 psi | 87% | 2835 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 46% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 68,081 psi | 85% | 2700 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 68,313 psi | 85% | 2674 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 70,895 psi | 89% | 2726 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 70,053 psi | 88% | 2723 fps | 99.9% |
| IMR 4198 | <<locked>> | 84% | 72,127 psi | 90% | 2598 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 70,126 psi | 88% | 2762 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 70,416 psi | 88% | 2753 fps | 99.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 69,401 psi | 87% | 2766 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 70,692 psi | 88% | 2766 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 61,003 psi | 76% | 2654 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,808 psi | 66% | 2631 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 86% | 68,530 psi | 86% | 2684 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 70,169 psi | 88% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 71,982 psi | 90% | 2713 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 72,287 psi | 90% | 2703 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 70,953 psi | 89% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 70,590 psi | 88% | 2746 fps | 100% |
| Lovex S070 | <<locked>> | 98% | 68,255 psi | 85% | 2740 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,672 psi | 57% | 2448 fps | 98.1% |
| Norma 201 | <<locked>> | 88% | 68,705 psi | 86% | 2680 fps | 100% |
| Norma 202 | <<locked>> | 88% | 69,763 psi | 87% | 2677 fps | 100% |
| Norma 203B | <<locked>> | 90% | 68,052 psi | 85% | 2726 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 72,316 psi | 90% | 2825 fps | 99.5% |
| Norma MRPᴾ | <<locked>> | 100% | 57,986 psi | 73% | 2736 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 71,533 psi | 90% | 2805 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 70,068 psi | 88% | 2762 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,301 psi | 67% | 2651 fps | 96.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 70,401 psi | 88% | 2815 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,297 psi | 59% | 2530 fps | 96.8% |
| Ramshot TAC | <<locked>> | 86% | 69,328 psi | 87% | 2726 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 86% | 69,691 psi | 87% | 2733 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 69,415 psi | 87% | 2694 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,217 psi | 47% | 1627 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 72,040 psi | 90% | 2703 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 70,503 psi | 88% | 2749 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 71,417 psi | 89% | 2815 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 67,762 psi | 85% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 69,604 psi | 87% | 2805 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 68,240 psi | 85% | 2838 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,511 psi | 54% | 2536 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 86% | 69,227 psi | 87% | 2651 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 69,372 psi | 87% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 70,111 psi | 88% | 2730 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 63,614 psi | 80% | 2694 fps | 98% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 60,176 psi | 75% | 2694 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 96% | 68,966 psi | 86% | 2733 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 70,590 psi | 88% | 2746 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 88% | 71,982 psi | 90% | 2713 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 70,953 psi | 89% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 68,255 psi | 85% | 2740 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 71,823 psi | 90% | 2687 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 70,024 psi | 88% | 2346 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 67,892 psi | 85% | 2743 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 71,025 psi | 89% | 2638 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 68,530 psi | 86% | 2710 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 68,675 psi | 86% | 2713 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 69,299 psi | 87% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 70,532 psi | 88% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 71,069 psi | 89% | 2710 fps | 99.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 59,669 psi | 75% | 2690 fps | 98.5% |
| Somchem S321 | <<locked>> | 84% | 71,228 psi | 89% | 2720 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 68,850 psi | 86% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 68,139 psi | 85% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 69,676 psi | 87% | 2723 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 65,891 psi | 82% | 2694 fps | 97.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 67,254 psi | 84% | 2759 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 60,872 psi | 76% | 2674 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 84% | 68,559 psi | 86% | 2559 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 69,633 psi | 87% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 69,865 psi | 87% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 70,459 psi | 88% | 2654 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 71,692 psi | 90% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 69,937 psi | 88% | 2753 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,794 psi | 66% | 2549 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 86% | 69,850 psi | 87% | 2690 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 68,414 psi | 86% | 2654 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 68,603 psi | 86% | 2756 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,406 psi | 72% | 2667 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 58,204 psi | 73% | 2730 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 70,445 psi | 88% | 2726 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 70,996 psi | 89% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 67,747 psi | 85% | 2785 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,340 psi | 58% | 2644 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 69,459 psi | 87% | 2726 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,348 psi | 72% | 2618 fps | 97.9% |
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% | 59,205 psi | 74% | 2490 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 65,528 psi | 82% | 2612 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 52,460 psi | 66% | 2438 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 60,568 psi | 76% | 2582 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,024 psi | 63% | 2441 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 36,564 psi | 46% | 2274 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 49,748 psi | 62% | 2441 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,000 psi | 48% | 2313 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 80% | 66,529 psi | 83% | 2549 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 67,138 psi | 84% | 2582 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,363 psi | 73% | 1959 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 55,027 psi | 69% | 2549 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,644 psi | 58% | 2411 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 44,773 psi | 56% | 2454 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 51,793 psi | 65% | 2602 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 57,130 psi | 71% | 2546 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 59,321 psi | 74% | 2516 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 67,921 psi | 85% | 2743 fps | 100% |
| Alliant Power Pro 2000-MR | 48.9 gr | 80% | 51,822 psi | 65% | 2612 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,224 psi | 59% | 2434 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 80% | 65,514 psi | 82% | 2566 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,560 psi | 63% | 2500 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,970 psi | 46% | 2323 fps | 97.9% |
| Alliant Reloder-17 | 48.1 gr | 80% | 41,756 psi | 52% | 2434 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,179 psi | 55% | 2444 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,541 psi | 56% | 2490 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,151 psi | 34% | 2093 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,780 psi | 44% | 2306 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 84% | 33,199 psi | 42% | 2306 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 66,688 psi | 83% | 2552 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,911 psi | 69% | 2566 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 46,702 psi | 58% | 2530 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 47,732 psi | 60% | 2448 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 44,541 psi | 56% | 2490 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,858 psi | 52% | 2326 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 58,204 psi | 73% | 2526 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 57,261 psi | 72% | 2575 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 63,875 psi | 80% | 2726 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 65,224 psi | 82% | 2615 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 66,616 psi | 83% | 2644 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 48,022 psi | 60% | 2457 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 39,900 psi | 50% | 2356 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 80% | 42,844 psi | 54% | 2379 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 98% | 55,608 psi | 70% | 2612 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,360 psi | 68% | 2592 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 55,666 psi | 70% | 2559 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,519 psi | 43% | 2228 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,272 psi | 65% | 2543 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 41,698 psi | 52% | 2421 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 34% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,055 psi | 66% | 2510 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 56,347 psi | 71% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,081 psi | 61% | 2444 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,329 psi | 64% | 2470 fps | 98.4% |
| IMR 4198 | <<locked>> | 80% | 64,658 psi | 81% | 2523 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 40,074 psi | 50% | 2313 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,221 psi | 54% | 2356 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 36,506 psi | 46% | 2270 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 51,851 psi | 65% | 2526 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,838 psi | 67% | 2552 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 49,545 psi | 62% | 2575 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 57,130 psi | 71% | 2546 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 65,412 psi | 82% | 2625 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 55,506 psi | 69% | 2526 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 53,693 psi | 67% | 2480 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,342 psi | 62% | 2441 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,930 psi | 51% | 2313 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 39,146 psi | 49% | 2293 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 35,317 psi | 44% | 2247 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 53,809 psi | 67% | 2497 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,331 psi | 68% | 2493 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,893 psi | 62% | 2487 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,165 psi | 57% | 2444 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 40,988 psi | 51% | 2451 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 37,768 psi | 47% | 2310 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 50,256 psi | 63% | 2510 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 49,632 psi | 62% | 2589 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,564 psi | 46% | 2293 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 44,019 psi | 55% | 2470 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 57,159 psi | 72% | 2572 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 57,232 psi | 72% | 2582 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 61,250 psi | 77% | 2598 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 35% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 63,672 psi | 80% | 2612 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,863 psi | 60% | 2441 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,795 psi | 69% | 2608 fps | 100% |
| ReloadSwiss RS 60 | 48.1 gr | 80% | 44,367 psi | 56% | 2484 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,695 psi | 47% | 2329 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,535 psi | 46% | 2333 fps | 96.5% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,683 psi | 51% | 2474 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 58,015 psi | 73% | 2520 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 51,169 psi | 64% | 2454 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,976 psi | 56% | 2398 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 49,226 psi | 62% | 2484 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 43,308 psi | 54% | 2428 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 41,858 psi | 52% | 2326 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,930 psi | 51% | 2313 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 55,506 psi | 69% | 2526 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 49,342 psi | 62% | 2441 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,146 psi | 49% | 2293 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 67,298 psi | 84% | 2641 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 66,805 psi | 84% | 2313 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,064 psi | 58% | 2448 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 66,819 psi | 84% | 2595 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 55,999 psi | 70% | 2556 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,461 psi | 67% | 2523 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,534 psi | 68% | 2438 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,151 psi | 58% | 2316 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,016 psi | 50% | 2264 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 45,963 psi | 58% | 2477 fps | 95.8% |
| Somchem S321 | <<locked>> | 80% | 62,410 psi | 78% | 2621 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 54,302 psi | 68% | 2438 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 55,840 psi | 70% | 2546 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,237 psi | 57% | 2398 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 53,911 psi | 67% | 2533 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,127 psi | 43% | 2267 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 41,191 psi | 52% | 2362 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 60,858 psi | 76% | 2477 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 55,085 psi | 69% | 2425 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,634 psi | 65% | 2425 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,721 psi | 65% | 2438 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,178 psi | 54% | 2336 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,146 psi | 49% | 2310 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 43,250 psi | 54% | 2395 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 57,609 psi | 72% | 2546 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 49,980 psi | 63% | 2431 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,609 psi | 48% | 2310 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 29,965 psi | 37% | 2165 fps | 95.4% |
| Vihtavuori N560 | <<locked>> | 98% | 54,404 psi | 68% | 2671 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,189 psi | 48% | 2283 fps | 99.4% |
| Winchester 748 | <<locked>> | 80% | 58,334 psi | 73% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 39,900 psi | 50% | 2356 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,325 psi | 34% | 2175 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,577 psi | 67% | 2530 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,644 psi | 58% | 2457 fps | 95.7% |
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 135 powders for 7 mm Backcountry loaded with the .284 | 170gr | Barnes TTSX BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,838 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,838 fps. Accurate 3100 gives the best case fill at 100 %, and 135 of the 135 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 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 7 mm Backcountry with the .284 | 170gr | Barnes TTSX BT 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.