Load Specifications
Bullet:.284 | 156gr | Norma ORYX
Bullet Manufacturer:Norma
Bullet Weight:156 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:1:13.5
Load data in caliber 7 mm Backcountry with .284 | 156gr | Norma ORYX bullet and 131 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Superformance, ReloadSwiss RS 70 and Hodgdon H414.
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% | 72,287 psi | 90% | 2769 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 71,446 psi | 89% | 2808 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 69,270 psi | 87% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 70,924 psi | 89% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 70,982 psi | 89% | 2858 fps | 99.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,840 psi | 71% | 2733 fps | 99.4% |
| Accurate 4064 | <<locked>> | 90% | 69,662 psi | 87% | 2818 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 72,098 psi | 90% | 2940 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 62,526 psi | 78% | 2927 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 82% | 71,707 psi | 90% | 2743 fps | 100% |
| ADI APS 450 | <<locked>> | 92% | 71,185 psi | 89% | 2241 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 71,910 psi | 90% | 2897 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 69,053 psi | 86% | 2851 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 63,962 psi | 80% | 2877 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,319 psi | 72% | 2812 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 70,285 psi | 88% | 2841 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 69,067 psi | 86% | 2756 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 70,996 psi | 89% | 2995 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 63,802 psi | 80% | 2871 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 70,285 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 70,735 psi | 89% | 2762 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 70,779 psi | 89% | 2900 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 72,229 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 70,401 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 62,845 psi | 79% | 2861 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,478 psi | 71% | 2808 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,345 psi | 67% | 2743 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,441 psi | 58% | 2667 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 62,120 psi | 78% | 2940 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 68,603 psi | 86% | 2877 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,663 psi | 65% | 2726 fps | 96.5% |
| Bofors RP3 | <<locked>> | 90% | 67,921 psi | 85% | 2844 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,478 psi | 71% | 2808 fps | 97.7% |
| Bofors RP7 | <<locked>> | 96% | 70,706 psi | 88% | 2890 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 70,822 psi | 89% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 71,533 psi | 90% | 2877 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 70,372 psi | 88% | 2940 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 71,156 psi | 89% | 2818 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 68,153 psi | 85% | 2867 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 69,705 psi | 87% | 2943 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 94% | 68,675 psi | 86% | 2904 fps | 99.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 61,540 psi | 77% | 2818 fps | 96.5% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 60,234 psi | 75% | 2799 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 68,719 psi | 86% | 2858 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 68,269 psi | 85% | 2861 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 70,010 psi | 88% | 2897 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 72,026 psi | 90% | 2999 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 46% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 69,923 psi | 87% | 2858 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 69,763 psi | 87% | 2828 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 68,327 psi | 85% | 2835 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 71,968 psi | 90% | 2884 fps | 99.9% |
| IMR 4198 | <<locked>> | 82% | 69,401 psi | 87% | 2713 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 72,084 psi | 90% | 2920 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 67,979 psi | 85% | 2858 fps | 99.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 71,620 psi | 90% | 2923 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 68,139 psi | 85% | 2874 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 62,743 psi | 79% | 2805 fps | 97% |
| IMR 8208 XBR | <<locked>> | 86% | 70,285 psi | 88% | 2841 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 71,692 psi | 90% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 69,227 psi | 87% | 2822 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 69,662 psi | 87% | 2815 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 68,850 psi | 86% | 2828 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 68,356 psi | 86% | 2854 fps | 100% |
| Lovex S070 | <<locked>> | 98% | 70,343 psi | 88% | 2897 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,326 psi | 59% | 2585 fps | 98% |
| Norma 201 | <<locked>> | 88% | 70,198 psi | 88% | 2838 fps | 100% |
| Norma 202 | <<locked>> | 88% | 71,170 psi | 89% | 2828 fps | 100% |
| Norma 203B | <<locked>> | 90% | 69,908 psi | 87% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 98% | 70,068 psi | 88% | 2933 fps | 99.1% |
| Norma MRPᴾ | <<locked>> | 100% | 60,437 psi | 76% | 2894 fps | 99.3% |
| Norma URP | <<locked>> | 98% | 69,473 psi | 87% | 2917 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 72,084 psi | 90% | 2920 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,230 psi | 69% | 2802 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 98% | 68,414 psi | 86% | 2927 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,400 psi | 62% | 2680 fps | 96.8% |
| Ramshot TAC | <<locked>> | 86% | 70,909 psi | 89% | 2881 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 86% | 71,591 psi | 90% | 2894 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 71,141 psi | 89% | 2848 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,362 psi | 47% | 1732 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 69,401 psi | 87% | 2812 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 67,907 psi | 85% | 2858 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 68,719 psi | 86% | 2923 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 70,039 psi | 88% | 2956 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 72,113 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 70,837 psi | 89% | 3002 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,353 psi | 57% | 2684 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 86% | 70,692 psi | 88% | 2805 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 71,069 psi | 89% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 67,704 psi | 85% | 2838 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 65,311 psi | 82% | 2844 fps | 97.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 62,207 psi | 78% | 2848 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 96% | 70,706 psi | 88% | 2890 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 68,356 psi | 86% | 2854 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 86% | 69,227 psi | 87% | 2822 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 68,850 psi | 86% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 70,343 psi | 88% | 2897 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 70,909 psi | 89% | 2487 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 70,053 psi | 88% | 2904 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 72,229 psi | 90% | 2792 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 70,372 psi | 88% | 2867 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 70,329 psi | 88% | 2871 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 70,808 psi | 89% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 72,142 psi | 90% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 68,559 psi | 86% | 2815 fps | 99.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 61,699 psi | 77% | 2844 fps | 98.4% |
| Somchem S321 | <<locked>> | 82% | 68,226 psi | 85% | 2825 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 70,169 psi | 88% | 2756 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 69,865 psi | 87% | 2848 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 71,243 psi | 89% | 2877 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 67,936 psi | 85% | 2848 fps | 97.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 69,647 psi | 87% | 2917 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 62,932 psi | 79% | 2828 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 84% | 69,618 psi | 87% | 2710 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 71,141 psi | 89% | 2736 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 71,634 psi | 90% | 2785 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 72,084 psi | 90% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 69,183 psi | 87% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 71,997 psi | 90% | 2910 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,534 psi | 68% | 2694 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 86% | 71,518 psi | 89% | 2844 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 69,865 psi | 87% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 70,909 psi | 89% | 2917 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 59,799 psi | 75% | 2822 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 60,481 psi | 76% | 2884 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 68,023 psi | 85% | 2831 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 68,487 psi | 86% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 69,705 psi | 87% | 2943 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,023 psi | 61% | 2799 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 71,562 psi | 90% | 2884 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 59,538 psi | 75% | 2772 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% | 60,408 psi | 76% | 2638 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 67,022 psi | 84% | 2762 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 53,853 psi | 67% | 2575 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 62,004 psi | 78% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,242 psi | 64% | 2582 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 37,811 psi | 47% | 2402 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 51,010 psi | 64% | 2582 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,233 psi | 49% | 2444 fps | 97.6% |
| Accurate High Country | <<locked>> | 94% | 50,589 psi | 63% | 2736 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 67,617 psi | 85% | 2700 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,450 psi | 73% | 2080 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 56,318 psi | 70% | 2697 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 47,834 psi | 60% | 2552 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 48,965 psi | 61% | 2648 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 53,519 psi | 67% | 2749 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 58,363 psi | 73% | 2694 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 60,626 psi | 76% | 2661 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,388 psi | 67% | 2759 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 46,166 psi | 58% | 2589 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,631 psi | 61% | 2579 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 80% | 66,674 psi | 83% | 2717 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,822 psi | 65% | 2644 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,000 psi | 48% | 2451 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,294 psi | 54% | 2575 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 48,791 psi | 61% | 2641 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 46,267 psi | 58% | 2631 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,762 psi | 37% | 2264 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,839 psi | 45% | 2434 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 84% | 34,447 psi | 43% | 2431 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 56,217 psi | 70% | 2713 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 48,544 psi | 61% | 2671 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 48,907 psi | 61% | 2589 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 46,267 psi | 58% | 2631 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 43,047 psi | 54% | 2464 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 59,277 psi | 74% | 2671 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 58,784 psi | 74% | 2726 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 65,615 psi | 82% | 2884 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 66,659 psi | 83% | 2769 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 49,298 psi | 62% | 2598 fps | 99.2% |
| Hodgdon H414 | 51.8 gr | 80% | 41,031 psi | 51% | 2487 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 46,818 psi | 59% | 2566 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 57,450 psi | 72% | 2759 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,246 psi | 70% | 2743 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 56,985 psi | 71% | 2707 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,476 psi | 44% | 2349 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,722 psi | 67% | 2687 fps | 100% |
| Hodgdon Superformance | 57.4 gr | 82% | 43,004 psi | 54% | 2556 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 34% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,331 psi | 68% | 2654 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 57,928 psi | 72% | 2687 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,343 psi | 63% | 2589 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,605 psi | 66% | 2615 fps | 98.2% |
| IMR 4198 | <<locked>> | 80% | 65,688 psi | 82% | 2671 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 43,729 psi | 55% | 2493 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,353 psi | 55% | 2490 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 37,695 psi | 47% | 2398 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 53,156 psi | 67% | 2667 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,448 psi | 69% | 2697 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 58,363 psi | 73% | 2694 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 67,254 psi | 84% | 2782 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 56,869 psi | 71% | 2674 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 54,868 psi | 69% | 2625 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,604 psi | 63% | 2585 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,901 psi | 52% | 2444 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 40,089 psi | 50% | 2421 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 39,015 psi | 49% | 2428 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 55,056 psi | 69% | 2644 fps | 100% |
| Norma 202 | <<locked>> | 80% | 55,840 psi | 70% | 2641 fps | 100% |
| Norma 203B | <<locked>> | 80% | 51,169 psi | 64% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 88% | 49,806 psi | 62% | 2638 fps | 95.8% |
| Norma MRP | <<locked>> | 90% | 42,511 psi | 53% | 2585 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 38,754 psi | 48% | 2434 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 51,677 psi | 65% | 2654 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 51,401 psi | 64% | 2736 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 37,608 psi | 47% | 2418 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 45,934 psi | 57% | 2618 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 58,334 psi | 73% | 2720 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 58,653 psi | 73% | 2733 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 62,613 psi | 78% | 2746 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 35% | 1545 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 65,137 psi | 82% | 2762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,153 psi | 62% | 2579 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 56,159 psi | 70% | 2756 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,977 psi | 58% | 2628 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,928 psi | 49% | 2457 fps | 97.1% |
| ReloadSwiss RS 70 | 53.8 gr | 80% | 37,666 psi | 47% | 2461 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 42,366 psi | 53% | 2618 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 59,306 psi | 74% | 2671 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 52,533 psi | 66% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,079 psi | 58% | 2533 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 50,633 psi | 63% | 2625 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 47,848 psi | 60% | 2625 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 43,047 psi | 54% | 2464 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,901 psi | 52% | 2444 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 56,869 psi | 71% | 2674 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 50,604 psi | 63% | 2585 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,089 psi | 50% | 2421 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 67,341 psi | 84% | 2451 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,239 psi | 59% | 2582 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 67,965 psi | 85% | 2746 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 57,667 psi | 72% | 2707 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,665 psi | 68% | 2667 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 55,477 psi | 69% | 2579 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,079 psi | 59% | 2451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,988 psi | 51% | 2392 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 47,427 psi | 59% | 2618 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 63,788 psi | 80% | 2772 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 55,477 psi | 69% | 2579 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 57,130 psi | 71% | 2690 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,383 psi | 58% | 2533 fps | 99.8% |
| Somchem S361 | <<locked>> | 94% | 55,738 psi | 70% | 2680 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 35,331 psi | 44% | 2395 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 42,496 psi | 53% | 2497 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 61,917 psi | 77% | 2621 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 56,086 psi | 70% | 2562 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 52,736 psi | 66% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,823 psi | 66% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,208 psi | 55% | 2467 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,263 psi | 50% | 2441 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 44,744 psi | 56% | 2530 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 58,769 psi | 74% | 2694 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 51,184 psi | 64% | 2569 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,740 psi | 50% | 2438 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,995 psi | 39% | 2283 fps | 95% |
| Vihtavuori N560 | <<locked>> | 98% | 56,260 psi | 70% | 2818 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,233 psi | 49% | 2411 fps | 99.3% |
| Winchester 748 | <<locked>> | 80% | 59,872 psi | 75% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,263 psi | 52% | 2490 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 28,094 psi | 35% | 2287 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,839 psi | 69% | 2674 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 48,225 psi | 60% | 2598 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 131 powders for 7 mm Backcountry loaded with the .284 | 156gr | Norma ORYX. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,002 fps; across all powders the maximum-charge window runs from 1,693 fps to 3,002 fps. Accurate 3100 gives the best case fill at 100 %, and 131 of the 131 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 156.0 gr projectile in 0.284" calls for a 1:13.5 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, ReloadSwiss RS 70, Hodgdon H414 rank at the top here: for 7 mm Backcountry with the .284 | 156gr | Norma ORYX 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.