Load Specifications
Bullet:.284 | 160gr | Swift A-Frame
Bullet Manufacturer:Swift
Bullet Weight:160 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 | 160gr | Swift A-Frame bullet and 131 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Hodgdon Superformance.
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% | 71,823 psi | 90% | 2723 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 71,156 psi | 89% | 2766 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 68,922 psi | 86% | 2720 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 70,372 psi | 88% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 70,401 psi | 88% | 2812 fps | 99.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,159 psi | 70% | 2690 fps | 99.4% |
| Accurate 4064 | <<locked>> | 90% | 69,053 psi | 86% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 71,605 psi | 90% | 2897 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 71,460 psi | 89% | 2700 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 72,127 psi | 90% | 2733 fps | 100% |
| ADI APS 450 | <<locked>> | 92% | 71,170 psi | 89% | 2201 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 71,765 psi | 90% | 2854 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 68,588 psi | 86% | 2808 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 63,266 psi | 79% | 2835 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,826 psi | 71% | 2769 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 69,676 psi | 87% | 2792 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 68,458 psi | 86% | 2710 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 70,300 psi | 88% | 2946 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 69,850 psi | 87% | 2828 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 70,401 psi | 88% | 2717 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 70,329 psi | 88% | 2854 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 71,315 psi | 89% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 69,952 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 62,221 psi | 78% | 2815 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,854 psi | 70% | 2762 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,881 psi | 66% | 2700 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,890 psi | 57% | 2621 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 61,670 psi | 77% | 2897 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 71,910 psi | 90% | 2700 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 68,298 psi | 85% | 2831 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,329 psi | 64% | 2687 fps | 96.6% |
| Bofors RP3 | <<locked>> | 92% | 71,837 psi | 90% | 2851 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,854 psi | 70% | 2762 fps | 97.7% |
| Bofors RP7 | <<locked>> | 96% | 70,140 psi | 88% | 2844 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 70,503 psi | 88% | 2766 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 71,156 psi | 89% | 2831 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 69,865 psi | 87% | 2894 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 70,663 psi | 88% | 2772 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 67,762 psi | 85% | 2825 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 68,937 psi | 86% | 2894 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 94% | 68,124 psi | 85% | 2854 fps | 99.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 60,974 psi | 76% | 2776 fps | 96.5% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 59,683 psi | 75% | 2756 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 68,037 psi | 85% | 2812 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 67,385 psi | 84% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 69,662 psi | 87% | 2854 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 71,272 psi | 89% | 2949 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,579 psi | 46% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 69,401 psi | 87% | 2812 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 69,633 psi | 87% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 68,139 psi | 85% | 2792 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 71,257 psi | 89% | 2835 fps | 99.9% |
| IMR 4198 | <<locked>> | 82% | 69,212 psi | 87% | 2671 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 71,417 psi | 89% | 2874 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 71,881 psi | 90% | 2867 fps | 99.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 70,880 psi | 89% | 2874 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 72,185 psi | 90% | 2881 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 62,149 psi | 78% | 2759 fps | 97% |
| IMR 8208 XBR | <<locked>> | 86% | 69,676 psi | 87% | 2792 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 71,475 psi | 89% | 2789 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 69,038 psi | 86% | 2782 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 69,343 psi | 87% | 2772 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 68,269 psi | 85% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 71,968 psi | 90% | 2854 fps | 100% |
| Lovex S070 | <<locked>> | 98% | 69,836 psi | 87% | 2854 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,789 psi | 59% | 2543 fps | 98% |
| Norma 201 | <<locked>> | 88% | 69,923 psi | 87% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 88% | 70,909 psi | 89% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 90% | 69,459 psi | 87% | 2838 fps | 100% |
| Norma 204 | <<locked>> | 98% | 69,430 psi | 87% | 2887 fps | 99.1% |
| Norma MRPᴾ | <<locked>> | 100% | 59,625 psi | 75% | 2848 fps | 99.3% |
| Norma URP | <<locked>> | 98% | 68,995 psi | 86% | 2874 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 71,547 psi | 90% | 2874 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,795 psi | 69% | 2759 fps | 96.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 72,113 psi | 90% | 2930 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,023 psi | 61% | 2638 fps | 96.8% |
| Ramshot TAC | <<locked>> | 86% | 70,604 psi | 88% | 2838 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 86% | 71,199 psi | 89% | 2848 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 70,706 psi | 88% | 2805 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,289 psi | 47% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 69,009 psi | 86% | 2769 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 71,881 psi | 90% | 2864 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 68,516 psi | 86% | 2881 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 69,430 psi | 87% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 71,518 psi | 89% | 2920 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 69,879 psi | 87% | 2953 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,889 psi | 56% | 2641 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 86% | 70,227 psi | 88% | 2759 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 70,430 psi | 88% | 2792 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 71,678 psi | 90% | 2844 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 64,934 psi | 81% | 2805 fps | 97.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 61,873 psi | 77% | 2808 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 96% | 70,140 psi | 88% | 2844 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 71,968 psi | 90% | 2854 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 86% | 69,038 psi | 86% | 2782 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 68,269 psi | 85% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 69,836 psi | 87% | 2854 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 70,459 psi | 88% | 2444 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 69,459 psi | 87% | 2858 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 71,837 psi | 90% | 2749 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 70,010 psi | 88% | 2825 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 69,952 psi | 88% | 2825 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 70,358 psi | 88% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 71,634 psi | 90% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 68,110 psi | 85% | 2772 fps | 99.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 61,351 psi | 77% | 2805 fps | 98.5% |
| Somchem S321 | <<locked>> | 84% | 72,243 psi | 90% | 2828 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 69,908 psi | 87% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 69,517 psi | 87% | 2805 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 70,880 psi | 89% | 2835 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 67,602 psi | 85% | 2808 fps | 97.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 68,821 psi | 86% | 2871 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 62,381 psi | 78% | 2782 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 84% | 69,386 psi | 87% | 2664 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 70,706 psi | 88% | 2694 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 71,214 psi | 89% | 2743 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 71,634 psi | 90% | 2762 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 68,530 psi | 86% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 71,562 psi | 90% | 2867 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,940 psi | 67% | 2651 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 86% | 70,924 psi | 89% | 2799 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 69,560 psi | 87% | 2762 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 70,271 psi | 88% | 2871 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 59,030 psi | 74% | 2776 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 59,712 psi | 75% | 2835 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 72,214 psi | 90% | 2838 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 67,907 psi | 85% | 2799 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 69,314 psi | 87% | 2900 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,124 psi | 60% | 2753 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 70,938 psi | 89% | 2838 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,653 psi | 73% | 2726 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% | 60,046 psi | 75% | 2595 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 66,616 psi | 83% | 2717 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 53,490 psi | 67% | 2536 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 61,627 psi | 77% | 2690 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,894 psi | 64% | 2543 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 37,579 psi | 47% | 2365 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 50,705 psi | 63% | 2539 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,972 psi | 49% | 2408 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 80% | 67,254 psi | 84% | 2654 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 67,863 psi | 85% | 2687 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,421 psi | 73% | 2044 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 56,072 psi | 70% | 2654 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 47,543 psi | 59% | 2510 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 45,658 psi | 57% | 2552 fps | 95% |
| ADI AR 2213 | <<locked>> | 98% | 53,229 psi | 67% | 2710 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 58,175 psi | 73% | 2654 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 60,568 psi | 76% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,069 psi | 66% | 2720 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,370 psi | 61% | 2539 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 80% | 66,514 psi | 83% | 2674 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,590 psi | 65% | 2602 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,739 psi | 47% | 2415 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,946 psi | 54% | 2536 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,266 psi | 57% | 2543 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,788 psi | 57% | 2592 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,588 psi | 37% | 2231 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,563 psi | 45% | 2395 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 84% | 34,142 psi | 43% | 2395 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 67,689 psi | 85% | 2654 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 55,927 psi | 70% | 2671 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 48,138 psi | 60% | 2631 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 48,718 psi | 61% | 2549 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 45,788 psi | 57% | 2592 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 42,583 psi | 53% | 2421 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 59,030 psi | 74% | 2628 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 58,465 psi | 73% | 2684 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 65,325 psi | 82% | 2841 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 66,427 psi | 83% | 2726 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 48,892 psi | 61% | 2556 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 40,669 psi | 51% | 2448 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 46,470 psi | 58% | 2526 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 98% | 57,116 psi | 71% | 2720 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,883 psi | 70% | 2700 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 56,768 psi | 71% | 2664 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,404 psi | 44% | 2320 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,316 psi | 67% | 2644 fps | 100% |
| Hodgdon Superformance | 55.9 gr | 82% | 42,699 psi | 53% | 2520 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 34% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,085 psi | 68% | 2615 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 57,551 psi | 72% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,038 psi | 63% | 2546 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,141 psi | 65% | 2572 fps | 98.3% |
| IMR 4198 | <<locked>> | 80% | 65,398 psi | 82% | 2628 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 43,410 psi | 54% | 2454 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,150 psi | 55% | 2454 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 37,231 psi | 47% | 2359 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 52,939 psi | 66% | 2631 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,013 psi | 69% | 2654 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 58,175 psi | 73% | 2654 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 66,616 psi | 83% | 2733 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 56,739 psi | 71% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 54,563 psi | 68% | 2582 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,299 psi | 63% | 2543 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,669 psi | 52% | 2408 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 39,842 psi | 50% | 2385 fps | 95.4% |
| Lovex S071 | <<locked>> | 92% | 36,347 psi | 45% | 2339 fps | 95% |
| Norma 201 | <<locked>> | 80% | 54,752 psi | 69% | 2602 fps | 100% |
| Norma 202 | <<locked>> | 80% | 55,535 psi | 69% | 2602 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,952 psi | 64% | 2589 fps | 100% |
| Norma 204 | <<locked>> | 86% | 46,412 psi | 58% | 2546 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 42,047 psi | 53% | 2546 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,522 psi | 48% | 2398 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 51,343 psi | 64% | 2612 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 50,923 psi | 64% | 2694 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 37,449 psi | 47% | 2385 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 45,498 psi | 57% | 2575 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 58,102 psi | 73% | 2677 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 58,378 psi | 73% | 2690 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 62,323 psi | 78% | 2703 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 35% | 1519 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 64,658 psi | 81% | 2720 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,791 psi | 61% | 2539 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 55,999 psi | 70% | 2717 fps | 100% |
| ReloadSwiss RS 60 | 51.6 gr | 80% | 45,614 psi | 57% | 2592 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,595 psi | 48% | 2418 fps | 97.2% |
| ReloadSwiss RS 70 | 52.4 gr | 80% | 37,434 psi | 47% | 2425 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,843 psi | 52% | 2572 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 58,914 psi | 74% | 2625 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 52,185 psi | 65% | 2559 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,832 psi | 57% | 2497 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 50,299 psi | 63% | 2585 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 47,471 psi | 59% | 2585 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 42,583 psi | 53% | 2421 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,669 psi | 52% | 2408 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 56,739 psi | 71% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 50,299 psi | 63% | 2543 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,842 psi | 50% | 2385 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 67,124 psi | 84% | 2408 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,108 psi | 59% | 2549 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 67,878 psi | 85% | 2707 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 57,087 psi | 71% | 2661 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,534 psi | 68% | 2628 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 55,419 psi | 69% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,963 psi | 59% | 2415 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,814 psi | 51% | 2356 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 47,050 psi | 59% | 2579 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 63,483 psi | 79% | 2730 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 55,143 psi | 69% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 56,869 psi | 71% | 2648 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,122 psi | 58% | 2497 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 55,172 psi | 69% | 2638 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 35,099 psi | 44% | 2359 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 42,366 psi | 53% | 2461 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 61,786 psi | 77% | 2582 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 55,985 psi | 70% | 2526 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 52,591 psi | 66% | 2526 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,576 psi | 66% | 2536 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,961 psi | 55% | 2431 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,074 psi | 50% | 2405 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 44,512 psi | 56% | 2493 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 58,595 psi | 73% | 2651 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 50,792 psi | 64% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,349 psi | 49% | 2398 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,734 psi | 38% | 2251 fps | 95.1% |
| Vihtavuori N560 | <<locked>> | 98% | 55,651 psi | 70% | 2772 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,001 psi | 49% | 2375 fps | 99.3% |
| Winchester 748 | <<locked>> | 80% | 59,727 psi | 75% | 2700 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,886 psi | 51% | 2451 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,963 psi | 35% | 2257 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,505 psi | 68% | 2635 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 47,805 psi | 60% | 2556 fps | 95.6% |
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 139 powders for 7 mm Backcountry loaded with the .284 | 160gr | Swift A-Frame. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,953 fps. Accurate 3100 gives the best case fill at 100 %, and 139 of the 139 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 160.0 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 60, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for 7 mm Backcountry with the .284 | 160gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.