Load Specifications
Bullet:.284 | 145gr | Barnes LRX BT
Bullet Manufacturer:Barnes
Bullet Weight:145 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:1:9.5
Load data in caliber 7 mm Backcountry with .284 | 145gr | Barnes LRX BT bullet and 120 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, 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>> | 88% | 68,821 psi | 86% | 2825 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 67,834 psi | 85% | 2864 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 68,414 psi | 86% | 2851 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 71,373 psi | 89% | 2933 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 71,692 psi | 90% | 2940 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,601 psi | 60% | 2667 fps | 97% |
| Accurate 4064 | <<locked>> | 94% | 68,501 psi | 86% | 2904 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 66,253 psi | 83% | 2966 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 69,575 psi | 87% | 2805 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 70,213 psi | 88% | 2841 fps | 100% |
| ADI APS 450 | <<locked>> | 92% | 70,895 psi | 89% | 2287 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 68,124 psi | 85% | 2943 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 69,256 psi | 87% | 2943 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,419 psi | 69% | 2828 fps | 95.9% |
| ADI AR 2219 | <<locked>> | 82% | 69,676 psi | 87% | 2897 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 70,909 psi | 89% | 2936 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 68,951 psi | 86% | 2851 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 70,169 psi | 88% | 3009 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 70,619 psi | 88% | 3091 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 70,285 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 71,968 psi | 90% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 70,808 psi | 89% | 2992 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 62,207 psi | 78% | 2959 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 98% | 69,343 psi | 87% | 3051 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,375 psi | 68% | 2812 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,962 psi | 56% | 2690 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,111 psi | 64% | 2864 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 70,024 psi | 88% | 2805 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 69,270 psi | 87% | 2972 fps | 100% |
| Bofors RP3 | <<locked>> | 96% | 72,055 psi | 90% | 2986 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 70,909 psi | 89% | 2969 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 90% | 72,142 psi | 90% | 2913 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 72,026 psi | 90% | 2976 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 71,040 psi | 89% | 3041 fps | 100% |
| Hodgdon H322 | <<locked>> | 84% | 67,805 psi | 85% | 2874 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 69,604 psi | 87% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 68,226 psi | 85% | 2956 fps | 100% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 68,835 psi | 86% | 3015 fps | 99.4% |
| Hodgdon H4198 | <<locked>> | 82% | 72,142 psi | 90% | 2858 fps | 100% |
| Hodgdon H4350 | <<locked>> | 98% | 68,472 psi | 86% | 2976 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 90% | 68,893 psi | 86% | 2949 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 58,508 psi | 73% | 2831 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 70,227 psi | 88% | 2995 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 71,373 psi | 89% | 3077 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,795 psi | 45% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 70,387 psi | 88% | 2953 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 69,778 psi | 87% | 2923 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 68,995 psi | 86% | 2930 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 68,690 psi | 86% | 2923 fps | 99.3% |
| IMR 4198 | <<locked>> | 86% | 70,924 psi | 89% | 2818 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 63,469 psi | 79% | 2890 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 98% | 68,530 psi | 86% | 2943 fps | 99.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 61,873 psi | 77% | 2894 fps | 99.9% |
| IMR 4895 | <<locked>> | 92% | 68,226 psi | 85% | 2966 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 70,909 psi | 89% | 2936 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 67,878 psi | 85% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 69,430 psi | 87% | 2920 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 70,663 psi | 88% | 2913 fps | 100% |
| Lovex S062 | <<locked>> | 94% | 68,675 psi | 86% | 2913 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 68,037 psi | 85% | 2933 fps | 99.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 65,412 psi | 82% | 2920 fps | 99.2% |
| Norma 200 | <<locked>> | 82% | 71,228 psi | 89% | 2835 fps | 100% |
| Norma 201 | <<locked>> | 92% | 70,488 psi | 88% | 2930 fps | 100% |
| Norma 202 | <<locked>> | 92% | 71,591 psi | 90% | 2927 fps | 100% |
| Norma 203B | <<locked>> | 94% | 69,879 psi | 87% | 2976 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 65,035 psi | 81% | 2946 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 50,705 psi | 63% | 2825 fps | 96.6% |
| Norma URPᴾ | <<locked>> | 100% | 64,020 psi | 80% | 2940 fps | 100% |
| Ramshot Big Game | <<locked>> | 92% | 67,530 psi | 85% | 2959 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 63,005 psi | 79% | 2943 fps | 99.3% |
| Ramshot TAC | <<locked>> | 90% | 72,113 psi | 90% | 2979 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 88% | 67,631 psi | 85% | 2936 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 67,965 psi | 85% | 2897 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,361 psi | 45% | 1762 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 70,648 psi | 88% | 2917 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 68,458 psi | 86% | 2943 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 68,748 psi | 86% | 3018 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 68,995 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 66,007 psi | 83% | 2986 fps | 100% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 65,224 psi | 82% | 3025 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 70,924 psi | 89% | 2900 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 71,098 psi | 89% | 2930 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 71,910 psi | 90% | 2979 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 70,909 psi | 89% | 2969 fps | 99.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 68,037 psi | 85% | 2933 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 69,430 psi | 87% | 2920 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 68,675 psi | 86% | 2913 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 65,412 psi | 82% | 2920 fps | 99.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 70,314 psi | 88% | 2900 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 69,618 psi | 87% | 2552 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 69,575 psi | 87% | 2907 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 69,836 psi | 87% | 2992 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 68,980 psi | 86% | 2851 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 71,141 psi | 89% | 2959 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 71,098 psi | 89% | 2969 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 71,837 psi | 90% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 68,603 psi | 86% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 69,067 psi | 86% | 2897 fps | 99.3% |
| Somchem S321 | <<locked>> | 86% | 69,009 psi | 86% | 2923 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 70,924 psi | 89% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 70,634 psi | 88% | 2946 fps | 100% |
| Somchem S355 | <<locked>> | 98% | 71,011 psi | 89% | 2966 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 59,103 psi | 74% | 2894 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,867 psi | 67% | 2772 fps | 96.8% |
| Vihtavuori N120 | <<locked>> | 82% | 71,779 psi | 90% | 2753 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 70,953 psi | 89% | 2812 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 71,968 psi | 90% | 2835 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 71,692 psi | 90% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 68,066 psi | 85% | 2854 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 69,241 psi | 87% | 2897 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 67,167 psi | 84% | 2943 fps | 100% |
| Vihtavuori N530 | <<locked>> | 88% | 67,849 psi | 85% | 2890 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 70,372 psi | 88% | 2900 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 65,934 psi | 83% | 2946 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,053 psi | 63% | 2769 fps | 99.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 67,791 psi | 85% | 2920 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 68,908 psi | 86% | 2943 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 69,212 psi | 87% | 3022 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,248 psi | 50% | 2707 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 71,953 psi | 90% | 2979 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% | 53,577 psi | 67% | 2638 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 59,335 psi | 74% | 2759 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,296 psi | 58% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 54,331 psi | 68% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 48,254 psi | 60% | 2602 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 41,278 psi | 52% | 2549 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,830 psi | 55% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 37,739 psi | 47% | 2497 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 80% | 61,612 psi | 77% | 2713 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 62,134 psi | 78% | 2746 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,073 psi | 73% | 2123 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 49,777 psi | 62% | 2677 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 42,264 psi | 53% | 2526 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 98% | 51,808 psi | 65% | 2766 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 64,919 psi | 81% | 2841 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,909 psi | 65% | 2684 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,098 psi | 66% | 2664 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 61,438 psi | 77% | 2897 fps | 100% |
| Alliant Power Pro 2000-MR | 50.7 gr | 80% | 46,064 psi | 58% | 2717 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,235 psi | 53% | 2546 fps | 99.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 59,901 psi | 75% | 2730 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,295 psi | 57% | 2615 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,882 psi | 44% | 2448 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,738 psi | 46% | 2516 fps | 97.6% |
| Alliant Reloder-19 | <<locked>> | 98% | 50,908 psi | 64% | 2756 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 90% | 32,503 psi | 41% | 2411 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 92% | 38,000 psi | 48% | 2595 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 61,569 psi | 77% | 2710 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,371 psi | 62% | 2684 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 42,105 psi | 53% | 2552 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 48,530 psi | 61% | 2641 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,417 psi | 67% | 2674 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,387 psi | 64% | 2707 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 57,450 psi | 72% | 2864 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 80% | 59,466 psi | 74% | 2776 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 60,684 psi | 76% | 2799 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,743 psi | 53% | 2556 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 46,035 psi | 58% | 2667 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 67,704 psi | 85% | 2812 fps | 100% |
| Hodgdon H4350 | <<locked>> | 88% | 49,647 psi | 62% | 2694 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,299 psi | 63% | 2690 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 32,213 psi | 40% | 2352 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,673 psi | 58% | 2661 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 49,211 psi | 62% | 2753 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 33% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,109 psi | 60% | 2638 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 50,604 psi | 63% | 2680 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,396 psi | 56% | 2562 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,920 psi | 59% | 2589 fps | 95.9% |
| IMR 4198 | <<locked>> | 80% | 59,654 psi | 75% | 2687 fps | 100% |
| IMR 4350 | <<locked>> | 92% | 49,095 psi | 61% | 2667 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,454 psi | 56% | 2562 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 36,274 psi | 45% | 2448 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 46,456 psi | 58% | 2641 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 51,909 psi | 65% | 2684 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 59,335 psi | 74% | 2772 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,356 psi | 62% | 2654 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,211 psi | 62% | 2615 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 44,382 psi | 56% | 2562 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 41,394 psi | 52% | 2510 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 44,860 psi | 56% | 2592 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 67,225 psi | 84% | 2789 fps | 100% |
| Norma 201 | <<locked>> | 80% | 48,602 psi | 61% | 2628 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 49,110 psi | 61% | 2631 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,672 psi | 56% | 2602 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 52,779 psi | 66% | 2766 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 47,079 psi | 59% | 2756 fps | 95.6% |
| Norma URP | <<locked>> | 84% | 37,739 psi | 47% | 2493 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 44,701 psi | 56% | 2618 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 42,163 psi | 53% | 2595 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,866 psi | 65% | 2697 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,663 psi | 65% | 2713 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 55,883 psi | 70% | 2736 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 34% | 1572 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 58,030 psi | 73% | 2762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,062 psi | 54% | 2543 fps | 95.4% |
| ReloadSwiss RS 52 | 49.1 gr | 80% | 48,486 psi | 61% | 2723 fps | 99.1% |
| ReloadSwiss RS 60 | 49.9 gr | 80% | 39,131 psi | 49% | 2585 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 37,637 psi | 47% | 2513 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 39,668 psi | 50% | 2579 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 52,417 psi | 66% | 2664 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,180 psi | 58% | 2579 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 39,639 psi | 50% | 2497 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 48,530 psi | 61% | 2641 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,394 psi | 52% | 2510 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,356 psi | 62% | 2654 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,382 psi | 56% | 2562 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 44,860 psi | 56% | 2592 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 61,453 psi | 77% | 2792 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 63,150 psi | 79% | 2484 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 65,064 psi | 81% | 2854 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,741 psi | 51% | 2546 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 61,163 psi | 77% | 2759 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,546 psi | 63% | 2674 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,138 psi | 60% | 2644 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,676 psi | 62% | 2579 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,684 psi | 52% | 2444 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 46,543 psi | 58% | 2566 fps | 95.8% |
| Somchem S321 | <<locked>> | 80% | 56,478 psi | 71% | 2762 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 49,443 psi | 62% | 2579 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,227 psi | 63% | 2667 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 40,321 psi | 50% | 2503 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 29,443 psi | 37% | 2326 fps | 96.1% |
| Somchem S385 | <<locked>> | 96% | 47,123 psi | 59% | 2661 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 67,733 psi | 85% | 2710 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 55,869 psi | 70% | 2635 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 50,212 psi | 63% | 2572 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,151 psi | 58% | 2559 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,673 psi | 58% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,421 psi | 48% | 2441 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 36,854 psi | 46% | 2448 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 52,170 psi | 65% | 2680 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,860 psi | 56% | 2552 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 38,856 psi | 49% | 2500 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 90% | 35,752 psi | 45% | 2487 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,866 psi | 42% | 2365 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 52,533 psi | 66% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 46,282 psi | 58% | 2671 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,661 psi | 38% | 2431 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,124 psi | 60% | 2651 fps | 99.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 120 powders for 7 mm Backcountry loaded with the .284 | 145gr | Barnes LRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,091 fps; across all powders the maximum-charge window runs from 1,722 fps to 3,091 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 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 145.0 gr projectile in 0.284" calls for a 1:9.5 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for 7 mm Backcountry with the .284 | 145gr | Barnes LRX BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.