Load Specifications
Bullet Manufacturer:TWENTY-NINE
Bullet Weight:168 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:1:8.0
Load data in caliber 7 mm Backcountry with .284 | 168gr | TWENTY-NINE ERTP bullet and 134 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Superformance, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
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% | 69,894 psi | 87% | 2618 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 68,980 psi | 86% | 2661 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 70,880 psi | 89% | 2657 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 68,124 psi | 85% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 67,994 psi | 85% | 2697 fps | 99.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,606 psi | 67% | 2582 fps | 99.2% |
| Accurate 4064 | <<locked>> | 92% | 70,750 psi | 89% | 2707 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 68,342 psi | 86% | 2779 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 58,407 psi | 73% | 2759 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 82% | 69,705 psi | 87% | 2595 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 70,358 psi | 88% | 2628 fps | 100% |
| ADI APS 450 | <<locked>> | 92% | 71,040 psi | 89% | 2113 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 69,502 psi | 87% | 2743 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 70,343 psi | 88% | 2743 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 60,756 psi | 76% | 2720 fps | 98.4% |
| ADI Benchmark 8208 | <<locked>> | 88% | 72,098 psi | 90% | 2733 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 70,488 psi | 88% | 2648 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 71,069 psi | 89% | 2792 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 72,084 psi | 90% | 2884 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 60,698 psi | 76% | 2713 fps | 98.4% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 60,698 psi | 76% | 2713 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 71,678 psi | 90% | 2762 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 68,559 psi | 86% | 2612 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 72,113 psi | 90% | 2789 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 68,429 psi | 86% | 2822 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 71,620 psi | 90% | 2858 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 59,799 psi | 75% | 2703 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,214 psi | 67% | 2651 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,169 psi | 63% | 2592 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,888 psi | 55% | 2516 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,754 psi | 72% | 2776 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 70,053 psi | 88% | 2598 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 70,387 psi | 88% | 2772 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,878 psi | 61% | 2579 fps | 96.2% |
| Bofors RP3 | <<locked>> | 92% | 69,270 psi | 87% | 2740 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,214 psi | 67% | 2651 fps | 97.3% |
| Bofors RP7 | <<locked>> | 98% | 71,968 psi | 90% | 2776 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 68,734 psi | 86% | 2664 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 68,574 psi | 86% | 2723 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 72,214 psi | 90% | 2835 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 68,661 psi | 86% | 2667 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 70,097 psi | 88% | 2697 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 69,821 psi | 87% | 2762 fps | 100% |
| Hodgdon H414 | <<locked>> | 98% | 70,663 psi | 88% | 2831 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 96% | 69,865 psi | 87% | 2792 fps | 99.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,508 psi | 73% | 2664 fps | 96.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,130 psi | 71% | 2644 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 70,387 psi | 88% | 2749 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 64,556 psi | 81% | 2700 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 71,591 psi | 90% | 2792 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 67,747 psi | 85% | 2828 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 46% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 71,315 psi | 89% | 2746 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 71,576 psi | 90% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 69,966 psi | 88% | 2726 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 69,198 psi | 87% | 2726 fps | 99.9% |
| IMR 4198 | <<locked>> | 84% | 71,141 psi | 89% | 2602 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 68,908 psi | 86% | 2759 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 96% | 69,256 psi | 87% | 2749 fps | 99.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 68,037 psi | 85% | 2762 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 69,720 psi | 87% | 2769 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 59,915 psi | 75% | 2648 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 88% | 72,098 psi | 90% | 2733 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 68,850 psi | 86% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 70,938 psi | 89% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 71,475 psi | 89% | 2710 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 70,039 psi | 88% | 2717 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 69,357 psi | 87% | 2743 fps | 100% |
| Lovex S070ᴾ | <<locked>> | 100% | 71,576 psi | 90% | 2789 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,614 psi | 56% | 2438 fps | 97.7% |
| Norma 201 | <<locked>> | 90% | 71,982 psi | 90% | 2730 fps | 100% |
| Norma 202 | <<locked>> | 88% | 68,443 psi | 86% | 2677 fps | 100% |
| Norma 203B | <<locked>> | 92% | 71,228 psi | 89% | 2776 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 71,040 psi | 89% | 2825 fps | 99.3% |
| Norma MRPᴾ | <<locked>> | 100% | 56,391 psi | 71% | 2726 fps | 99% |
| Norma URPᴾ | <<locked>> | 100% | 70,488 psi | 88% | 2808 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 68,763 psi | 86% | 2759 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 69,125 psi | 86% | 2815 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,296 psi | 58% | 2520 fps | 96.2% |
| Ramshot TAC | <<locked>> | 86% | 68,124 psi | 85% | 2726 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 86% | 68,792 psi | 86% | 2736 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 68,559 psi | 86% | 2694 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 46% | 1631 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 71,098 psi | 89% | 2707 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 69,241 psi | 87% | 2749 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 70,372 psi | 88% | 2818 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 71,112 psi | 89% | 2848 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 68,226 psi | 85% | 2802 fps | 100% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 71,707 psi | 90% | 2890 fps | 100% |
| Rottweil R 901 | <<locked>> | 88% | 72,026 psi | 90% | 2694 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 72,272 psi | 90% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 69,111 psi | 86% | 2733 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 62,439 psi | 78% | 2690 fps | 97.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,914 psi | 74% | 2690 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 98% | 71,968 psi | 90% | 2776 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 69,357 psi | 87% | 2743 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 88% | 70,938 psi | 89% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 70,039 psi | 88% | 2717 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 71,576 psi | 90% | 2789 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 70,895 psi | 89% | 2694 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 69,531 psi | 87% | 2349 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 71,098 psi | 89% | 2792 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 69,966 psi | 88% | 2641 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 72,258 psi | 90% | 2762 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 72,214 psi | 90% | 2766 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 68,356 psi | 86% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 69,647 psi | 87% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 70,285 psi | 88% | 2713 fps | 99.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 58,407 psi | 73% | 2687 fps | 98.2% |
| Somchem S321 | <<locked>> | 84% | 69,981 psi | 88% | 2720 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 72,040 psi | 90% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 71,750 psi | 90% | 2743 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 68,385 psi | 86% | 2723 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 64,759 psi | 81% | 2690 fps | 97.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 65,775 psi | 82% | 2759 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 59,683 psi | 75% | 2671 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 86% | 71,765 psi | 90% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 68,675 psi | 86% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 68,879 psi | 86% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 69,169 psi | 87% | 2654 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 70,430 psi | 88% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 68,588 psi | 86% | 2753 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,677 psi | 65% | 2543 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 86% | 68,559 psi | 86% | 2687 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 71,663 psi | 90% | 2703 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 71,910 psi | 90% | 2808 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,463 psi | 71% | 2667 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,739 psi | 71% | 2717 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 69,241 psi | 87% | 2726 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 70,039 psi | 88% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 71,054 psi | 89% | 2838 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,295 psi | 57% | 2638 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 68,545 psi | 86% | 2730 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,202 psi | 70% | 2615 fps | 97.6% |
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% | 58,247 psi | 73% | 2490 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 64,600 psi | 81% | 2612 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 51,488 psi | 64% | 2438 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 59,640 psi | 75% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,269 psi | 62% | 2441 fps | 97.1% |
| Accurate 3100 | <<locked>> | 88% | 35,853 psi | 45% | 2270 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 48,805 psi | 61% | 2441 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,173 psi | 47% | 2306 fps | 97.4% |
| Accurate High Country | <<locked>> | 96% | 51,053 psi | 64% | 2644 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 65,659 psi | 82% | 2552 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 66,253 psi | 83% | 2585 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,334 psi | 73% | 1965 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 54,172 psi | 68% | 2549 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,166 psi | 58% | 2415 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 46,644 psi | 58% | 2500 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 56,275 psi | 70% | 2546 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 58,320 psi | 73% | 2520 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 66,834 psi | 84% | 2746 fps | 100% |
| Alliant Power Pro 2000-MR | 48.5 gr | 80% | 50,923 psi | 64% | 2612 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,775 psi | 59% | 2500 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,775 psi | 59% | 2500 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,688 psi | 58% | 2438 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 80% | 64,527 psi | 81% | 2569 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,705 psi | 62% | 2500 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,274 psi | 45% | 2316 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,959 psi | 51% | 2431 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,238 psi | 58% | 2490 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,601 psi | 58% | 2539 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,297 psi | 35% | 2136 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,303 psi | 45% | 2356 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 86% | 34,882 psi | 44% | 2359 fps | 96.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 65,876 psi | 82% | 2556 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,085 psi | 68% | 2569 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 45,687 psi | 57% | 2523 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 46,862 psi | 59% | 2448 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 46,601 psi | 58% | 2539 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 41,365 psi | 52% | 2329 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 57,377 psi | 72% | 2526 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 56,376 psi | 71% | 2579 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 62,845 psi | 79% | 2726 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 64,571 psi | 81% | 2621 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 65,731 psi | 82% | 2651 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 47,224 psi | 59% | 2457 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 39,160 psi | 49% | 2349 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 44,759 psi | 56% | 2425 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 98% | 54,491 psi | 68% | 2605 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,272 psi | 67% | 2585 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 54,795 psi | 69% | 2559 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,808 psi | 42% | 2224 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,387 psi | 64% | 2543 fps | 100% |
| Hodgdon Superformance | 51.7 gr | 82% | 40,785 psi | 51% | 2415 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 34% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,518 psi | 66% | 2513 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 55,695 psi | 70% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,544 psi | 61% | 2448 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,575 psi | 63% | 2470 fps | 98.1% |
| IMR 4198 | <<locked>> | 80% | 63,672 psi | 80% | 2523 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 41,887 psi | 52% | 2359 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,772 psi | 54% | 2359 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 35,752 psi | 45% | 2267 fps | 97% |
| IMR 4895 | <<locked>> | 80% | 50,981 psi | 64% | 2523 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,823 psi | 66% | 2546 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 56,275 psi | 70% | 2546 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 64,484 psi | 81% | 2628 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 54,592 psi | 68% | 2530 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 53,156 psi | 67% | 2484 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,791 psi | 61% | 2448 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,205 psi | 50% | 2310 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 38,435 psi | 48% | 2290 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 36,898 psi | 46% | 2293 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,997 psi | 66% | 2500 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,751 psi | 67% | 2500 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,052 psi | 61% | 2487 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,572 psi | 60% | 2497 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 40,045 psi | 50% | 2441 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 36,999 psi | 46% | 2303 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 49,414 psi | 62% | 2510 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 38,392 psi | 48% | 2346 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 43,091 psi | 54% | 2464 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 56,347 psi | 71% | 2575 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 56,420 psi | 71% | 2585 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 60,437 psi | 76% | 2598 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 35% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 62,787 psi | 79% | 2615 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,123 psi | 59% | 2438 fps | 97.9% |
| ReloadSwiss RS 52 | 47 gr | 80% | 53,824 psi | 67% | 2608 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,540 psi | 54% | 2484 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,927 psi | 46% | 2326 fps | 96.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,911 psi | 45% | 2326 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 57,101 psi | 71% | 2523 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 50,604 psi | 63% | 2457 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,121 psi | 55% | 2398 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 51,576 psi | 65% | 2533 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 45,324 psi | 57% | 2477 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 41,365 psi | 52% | 2329 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,205 psi | 50% | 2310 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,592 psi | 68% | 2530 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,791 psi | 61% | 2448 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,435 psi | 48% | 2290 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 66,369 psi | 83% | 2644 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 65,978 psi | 83% | 2316 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,237 psi | 57% | 2444 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 65,804 psi | 82% | 2598 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 55,129 psi | 69% | 2556 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,649 psi | 66% | 2523 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,679 psi | 67% | 2438 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,397 psi | 57% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,334 psi | 49% | 2260 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,904 psi | 56% | 2470 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 61,540 psi | 77% | 2625 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 53,476 psi | 67% | 2438 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,984 psi | 69% | 2546 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,411 psi | 56% | 2395 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 56,768 psi | 71% | 2582 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 33,562 psi | 42% | 2267 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 43,047 psi | 54% | 2408 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 60,002 psi | 75% | 2480 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 54,259 psi | 68% | 2425 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,734 psi | 63% | 2425 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,879 psi | 64% | 2438 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,453 psi | 53% | 2336 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,377 psi | 48% | 2306 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 94% | 42,511 psi | 53% | 2392 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 56,724 psi | 71% | 2546 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 49,197 psi | 62% | 2431 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,884 psi | 47% | 2306 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 31,227 psi | 39% | 2208 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 98% | 53,272 psi | 67% | 2664 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,579 psi | 47% | 2283 fps | 99.2% |
| Winchester 748 | <<locked>> | 80% | 57,421 psi | 72% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 39,160 psi | 49% | 2349 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,643 psi | 33% | 2159 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,721 psi | 66% | 2530 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,614 psi | 57% | 2451 fps | 95.2% |
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 134 powders for 7 mm Backcountry loaded with the .284 | 168gr | TWENTY-NINE ERTP. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,890 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,890 fps. Accurate 3100 gives the best case fill at 100 %, and 134 of the 134 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 168.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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. Hodgdon Superformance, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for 7 mm Backcountry with the .284 | 168gr | TWENTY-NINE ERTP 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.