Load Specifications
Bullet Manufacturer:Frontier Bullets
Bullet Weight:140 gr
Bullet Diameter:0.283"
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:1:10.0
Load data in caliber 7 mm Backcountry with .283 | 140gr | Frontier PH HPFB bullet and 118 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, ReloadSwiss RS 52 and Alliant Reloder-17.
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>> | 88% | 69,952 psi | 88% | 2887 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 69,314 psi | 87% | 2930 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 70,634 psi | 88% | 2923 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 68,153 psi | 85% | 2946 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 68,342 psi | 86% | 2946 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,284 psi | 62% | 2740 fps | 97.1% |
| Accurate 4064 | <<locked>> | 94% | 70,068 psi | 88% | 2969 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 67,979 psi | 85% | 3031 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 70,459 psi | 88% | 2867 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 71,040 psi | 89% | 2904 fps | 100% |
| ADI APS 450 | <<locked>> | 92% | 70,735 psi | 89% | 2333 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 69,531 psi | 87% | 3009 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 70,401 psi | 88% | 3005 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,304 psi | 70% | 2887 fps | 95.9% |
| ADI AR 2219 | <<locked>> | 82% | 70,590 psi | 88% | 2956 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 72,258 psi | 90% | 3005 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 70,401 psi | 88% | 2917 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 71,214 psi | 89% | 3074 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 71,620 psi | 90% | 3153 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,434 psi | 71% | 2887 fps | 96% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,434 psi | 71% | 2887 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 71,591 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 68,806 psi | 86% | 2884 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 72,113 psi | 90% | 3054 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 63,599 psi | 80% | 3025 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 98% | 70,996 psi | 89% | 3123 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,137 psi | 58% | 2756 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,620 psi | 66% | 2933 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 70,837 psi | 89% | 2864 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 70,256 psi | 88% | 3031 fps | 100% |
| Bofors RP3 | <<locked>> | 94% | 68,966 psi | 86% | 3002 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 71,953 psi | 90% | 3031 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 68,937 psi | 86% | 2927 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 68,588 psi | 86% | 2989 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 67,211 psi | 84% | 3048 fps | 100% |
| Hodgdon H322 | <<locked>> | 84% | 68,763 psi | 86% | 2940 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 70,604 psi | 88% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 69,531 psi | 87% | 3018 fps | 100% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 70,430 psi | 88% | 3084 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 98% | 69,778 psi | 87% | 3041 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 90% | 70,387 psi | 88% | 3018 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 60,017 psi | 75% | 2897 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 71,373 psi | 89% | 3058 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 67,399 psi | 84% | 3074 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 45% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 71,620 psi | 90% | 3018 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 71,098 psi | 89% | 2989 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 69,937 psi | 88% | 2989 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 69,502 psi | 87% | 2979 fps | 99.3% |
| IMR 4198 | <<locked>> | 86% | 71,678 psi | 90% | 2881 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 64,368 psi | 81% | 2949 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 98% | 69,430 psi | 87% | 3002 fps | 99.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 63,382 psi | 79% | 2963 fps | 99.9% |
| IMR 4895 | <<locked>> | 92% | 69,676 psi | 87% | 3035 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 72,258 psi | 90% | 3005 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 69,198 psi | 87% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 70,677 psi | 88% | 2982 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 71,620 psi | 90% | 2976 fps | 100% |
| Lovex S062 | <<locked>> | 94% | 69,836 psi | 87% | 2979 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 69,212 psi | 87% | 2992 fps | 99.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 66,892 psi | 84% | 2986 fps | 99.2% |
| Norma 201 | <<locked>> | 92% | 72,113 psi | 90% | 2999 fps | 100% |
| Norma 202 | <<locked>> | 90% | 68,734 psi | 86% | 2943 fps | 100% |
| Norma 203B | <<locked>> | 94% | 71,214 psi | 89% | 3041 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 66,500 psi | 83% | 3015 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 51,909 psi | 65% | 2887 fps | 96.6% |
| Norma URPᴾ | <<locked>> | 100% | 65,470 psi | 82% | 3009 fps | 100% |
| Ramshot Big Game | <<locked>> | 92% | 68,617 psi | 86% | 3022 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 64,542 psi | 81% | 3009 fps | 99.4% |
| Ramshot TAC | <<locked>> | 88% | 68,574 psi | 86% | 2986 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 88% | 68,850 psi | 86% | 2999 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 69,212 psi | 87% | 2963 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 46% | 1804 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 71,373 psi | 89% | 2976 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 69,502 psi | 87% | 3002 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 69,763 psi | 87% | 3081 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 70,329 psi | 88% | 3114 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 67,704 psi | 85% | 3051 fps | 100% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 66,239 psi | 83% | 3084 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 90% | 72,229 psi | 90% | 2966 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 68,400 psi | 86% | 2946 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 68,777 psi | 86% | 2992 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 71,953 psi | 90% | 3031 fps | 99.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 69,212 psi | 87% | 2992 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 70,677 psi | 88% | 2982 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 69,836 psi | 87% | 2979 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 66,892 psi | 84% | 2986 fps | 99.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 71,388 psi | 89% | 2963 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 70,314 psi | 88% | 2612 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 70,735 psi | 89% | 2969 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 70,837 psi | 89% | 3051 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 70,126 psi | 88% | 2913 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 67,660 psi | 85% | 2969 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 72,214 psi | 90% | 3031 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 68,922 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 69,502 psi | 87% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 70,372 psi | 88% | 2959 fps | 99.3% |
| Somchem S321 | <<locked>> | 86% | 70,329 psi | 88% | 2992 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 68,197 psi | 85% | 2871 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 71,736 psi | 90% | 3005 fps | 100% |
| Somchem S355 | <<locked>> | 98% | 72,301 psi | 90% | 3031 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 60,292 psi | 75% | 2956 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,259 psi | 69% | 2838 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 88% | 71,881 psi | 90% | 2871 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 69,125 psi | 86% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 68,501 psi | 86% | 2900 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 69,502 psi | 87% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 70,401 psi | 88% | 2959 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 68,487 psi | 86% | 3009 fps | 100% |
| Vihtavuori N530 | <<locked>> | 88% | 68,908 psi | 86% | 2956 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 71,547 psi | 90% | 2963 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 67,211 psi | 84% | 3009 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,750 psi | 65% | 2838 fps | 99.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 69,053 psi | 86% | 2982 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 69,894 psi | 87% | 3005 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 70,430 psi | 88% | 3084 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,742 psi | 52% | 2779 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 68,342 psi | 86% | 2989 fps | 100% |
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% | 54,766 psi | 69% | 2700 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 60,582 psi | 76% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,935 psi | 60% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 55,593 psi | 70% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 49,197 psi | 62% | 2661 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 42,801 psi | 54% | 2618 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,353 psi | 57% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 36,535 psi | 46% | 2503 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 62,323 psi | 78% | 2772 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 62,845 psi | 79% | 2805 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,262 psi | 73% | 2172 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 50,705 psi | 63% | 2736 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 43,149 psi | 54% | 2582 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 98% | 52,823 psi | 66% | 2828 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 65,934 psi | 83% | 2904 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,750 psi | 66% | 2743 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,520 psi | 68% | 2730 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 62,395 psi | 78% | 2959 fps | 100% |
| Alliant Power Pro 2000-MR | 52 gr | 80% | 46,992 psi | 59% | 2779 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,649 psi | 66% | 2825 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,649 psi | 66% | 2825 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,497 psi | 54% | 2612 fps | 99.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 61,076 psi | 76% | 2792 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,311 psi | 58% | 2671 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 35,955 psi | 45% | 2513 fps | 95.1% |
| Alliant Reloder-17 | 51.2 gr | 80% | 37,768 psi | 47% | 2579 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 33,663 psi | 42% | 2474 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 39,436 psi | 49% | 2664 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 62,511 psi | 78% | 2769 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,531 psi | 63% | 2749 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 43,497 psi | 54% | 2618 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 49,516 psi | 62% | 2697 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,230 psi | 68% | 2730 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,489 psi | 66% | 2769 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 58,668 psi | 73% | 2930 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 80% | 60,611 psi | 76% | 2838 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 61,917 psi | 77% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,976 psi | 55% | 2621 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 47,152 psi | 59% | 2726 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 88% | 50,691 psi | 63% | 2753 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 51,227 psi | 64% | 2746 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,241 psi | 39% | 2359 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,761 psi | 60% | 2723 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 50,183 psi | 63% | 2812 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 34% | 1578 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,153 psi | 62% | 2700 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 51,721 psi | 65% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,368 psi | 57% | 2621 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,659 psi | 60% | 2644 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 60,350 psi | 76% | 2749 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 47,282 psi | 59% | 2677 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,382 psi | 57% | 2621 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 37,666 psi | 47% | 2516 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 47,442 psi | 59% | 2700 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 52,750 psi | 66% | 2743 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 60,553 psi | 76% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,705 psi | 63% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,038 psi | 63% | 2671 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 45,484 psi | 57% | 2625 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 42,569 psi | 53% | 2569 fps | 95.8% |
| Lovex S070 | <<locked>> | 88% | 45,934 psi | 57% | 2651 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 49,777 psi | 62% | 2690 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 50,386 psi | 63% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,658 psi | 57% | 2661 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 54,157 psi | 68% | 2831 fps | 95.3% |
| Norma MRP | <<locked>> | 98% | 48,327 psi | 60% | 2818 fps | 95.6% |
| Norma URP | <<locked>> | 82% | 36,390 psi | 46% | 2500 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 45,687 psi | 57% | 2677 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 43,221 psi | 54% | 2657 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 52,968 psi | 66% | 2759 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,881 psi | 66% | 2776 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 56,797 psi | 71% | 2795 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 34% | 1614 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 59,088 psi | 74% | 2825 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,106 psi | 55% | 2602 fps | 95.4% |
| ReloadSwiss RS 52 | 50.4 gr | 80% | 49,632 psi | 62% | 2785 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,161 psi | 50% | 2644 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 38,725 psi | 48% | 2572 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 40,683 psi | 51% | 2641 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 53,809 psi | 67% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,384 psi | 59% | 2641 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 40,843 psi | 51% | 2559 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 49,516 psi | 62% | 2697 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 42,569 psi | 53% | 2569 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,705 psi | 63% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,484 psi | 57% | 2625 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 45,934 psi | 57% | 2651 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 62,366 psi | 78% | 2851 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 63,715 psi | 80% | 2539 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 66,268 psi | 83% | 2920 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,843 psi | 52% | 2608 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 62,149 psi | 78% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,605 psi | 65% | 2736 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,197 psi | 62% | 2707 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,720 psi | 63% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,641 psi | 53% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,585 psi | 56% | 2569 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 57,783 psi | 72% | 2828 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 50,430 psi | 63% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,459 psi | 64% | 2733 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 41,452 psi | 52% | 2562 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 30,676 psi | 38% | 2392 fps | 96.3% |
| Somchem S385 | <<locked>> | 96% | 48,617 psi | 61% | 2726 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 56,855 psi | 71% | 2697 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 51,184 psi | 64% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,355 psi | 59% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,645 psi | 60% | 2628 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,450 psi | 49% | 2497 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 37,956 psi | 47% | 2507 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 53,272 psi | 67% | 2743 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,992 psi | 58% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 37,449 psi | 47% | 2503 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 34,751 psi | 43% | 2497 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,954 psi | 44% | 2428 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 53,563 psi | 67% | 2789 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 47,413 psi | 59% | 2730 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 31,850 psi | 40% | 2503 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,124 psi | 61% | 2713 fps | 99.6% |
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 118 powders for 7 mm Backcountry loaded with the .283 | 140gr | Frontier PH HPFB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,765 fps to 3,153 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (551 MPa), the top charges use 45–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.283" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Alliant Reloder-17 rank at the top here: for 7 mm Backcountry with the .283 | 140gr | Frontier PH HPFB 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.