Load Specifications
Bullet:.243 | 105gr | Berger BT
Bullet Manufacturer:Berger
Bullet Weight:105 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Caliber:6 mm XC load data
Case Length (l3):1.901"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:49.7 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:9.0
Load data in caliber 6 mm XC with .243 | 105gr | Berger BT bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 56,826 psi | 89% | 2805 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,333 psi | 88% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,375 psi | 85% | 2841 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,094 psi | 74% | 2812 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 56,362 psi | 88% | 2887 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,782 psi | 89% | 2989 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,883 psi | 88% | 2913 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,855 psi | 89% | 2917 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,215 psi | 85% | 2963 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,839 psi | 86% | 2864 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,449 psi | 88% | 2835 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,912 psi | 88% | 3045 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,331 psi | 85% | 2966 fps | 97% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,331 psi | 85% | 2966 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,377 psi | 90% | 2940 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,534 psi | 85% | 2913 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,174 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,158 psi | 86% | 3022 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,519 psi | 84% | 2956 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,440 psi | 70% | 2841 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2733 fps | 96.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,053 psi | 78% | 3018 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,796 psi | 87% | 2933 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 54,679 psi | 86% | 2907 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,534 psi | 85% | 2884 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,391 psi | 88% | 2844 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,302 psi | 85% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,303 psi | 87% | 2923 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 55,608 psi | 87% | 2986 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 92% | 55,637 psi | 87% | 2943 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,478 psi | 89% | 2923 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,624 psi | 90% | 2963 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,594 psi | 89% | 2963 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,622 psi | 87% | 3022 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,085 psi | 57% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,172 psi | 85% | 2874 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,884 psi | 89% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,463 psi | 88% | 2900 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,014 psi | 88% | 2881 fps | 98.6% |
| IMR 4350 | <<locked>> | 96% | 55,187 psi | 86% | 2917 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,115 psi | 88% | 2913 fps | 98.6% |
| IMR 4831 | <<locked>> | 98% | 57,217 psi | 90% | 2982 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,956 psi | 88% | 2946 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,839 psi | 86% | 2864 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,144 psi | 88% | 2890 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,259 psi | 87% | 2841 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,550 psi | 89% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,043 psi | 88% | 2910 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 56,884 psi | 89% | 2946 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,059 psi | 61% | 2657 fps | 96.1% |
| Norma 201 | <<locked>> | 84% | 54,940 psi | 86% | 2861 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,550 psi | 87% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,116 psi | 90% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,666 psi | 87% | 2966 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2972 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 55,216 psi | 87% | 2969 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 54,143 psi | 85% | 2923 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,143 psi | 85% | 2969 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 54,955 psi | 86% | 2887 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,984 psi | 86% | 2907 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,419 psi | 57% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,477 psi | 87% | 2904 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,201 psi | 87% | 2982 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,737 psi | 86% | 3015 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,362 psi | 88% | 3012 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,259 psi | 87% | 3041 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 55,811 psi | 87% | 2838 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,477 psi | 87% | 2861 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,520 psi | 85% | 2897 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,289 psi | 88% | 2940 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,141 psi | 82% | 2933 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 54,534 psi | 85% | 2884 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,043 psi | 88% | 2910 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,144 psi | 88% | 2890 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,550 psi | 89% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,884 psi | 89% | 2946 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,376 psi | 88% | 2966 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,319 psi | 90% | 2923 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,462 psi | 85% | 2890 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,869 psi | 88% | 2792 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,434 psi | 88% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,854 psi | 88% | 2861 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 2927 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 55,608 psi | 87% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,869 psi | 89% | 2910 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,723 psi | 86% | 2897 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3025 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2913 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 84% | 56,260 psi | 88% | 2776 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,390 psi | 87% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,028 psi | 88% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,304 psi | 88% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,070 psi | 85% | 2910 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 55,405 psi | 87% | 2864 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,508 psi | 90% | 2881 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,000 psi | 89% | 2976 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2913 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,172 psi | 85% | 2890 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,622 psi | 87% | 2913 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,608 psi | 87% | 2986 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,653 psi | 62% | 2864 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,621 psi | 86% | 2900 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,661 psi | 78% | 2848 fps | 95.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 53,476 psi | 84% | 2759 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,311 psi | 73% | 2690 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,831 psi | 70% | 2674 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 38,116 psi | 60% | 2638 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,816 psi | 69% | 2690 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,866 psi | 52% | 2526 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 49,588 psi | 78% | 2812 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,119 psi | 66% | 2661 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 47,892 psi | 75% | 2848 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,692 psi | 81% | 2815 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,924 psi | 83% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,339 psi | 71% | 2858 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 47,718 psi | 75% | 2848 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 47,718 psi | 75% | 2848 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,061 psi | 66% | 2684 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,194 psi | 71% | 2753 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,721 psi | 51% | 2536 fps | 95.8% |
| Alliant Reloder-17 | 35.3 gr | 80% | 36,564 psi | 57% | 2664 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,079 psi | 74% | 2841 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,616 psi | 45% | 2451 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,550 psi | 57% | 2677 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,128 psi | 55% | 2690 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,878 psi | 77% | 2822 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 41,974 psi | 66% | 2690 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,569 psi | 67% | 2664 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,794 psi | 83% | 2792 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,749 psi | 80% | 2838 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,670 psi | 67% | 2697 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 40,001 psi | 63% | 2694 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 46,151 psi | 72% | 2772 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 50,111 psi | 79% | 2825 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,226 psi | 47% | 2438 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,398 psi | 73% | 2802 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 41,887 psi | 66% | 2762 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 42% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,645 psi | 75% | 2766 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,082 psi | 78% | 2805 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,280 psi | 69% | 2694 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,586 psi | 73% | 2720 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 42,844 psi | 67% | 2694 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,452 psi | 65% | 2644 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 31,633 psi | 50% | 2480 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 46,325 psi | 73% | 2782 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 51,692 psi | 81% | 2815 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,298 psi | 77% | 2789 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,747 psi | 76% | 2736 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,135 psi | 69% | 2694 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,390 psi | 57% | 2536 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 39,465 psi | 62% | 2625 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 36,622 psi | 57% | 2605 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,312 psi | 76% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,863 psi | 77% | 2759 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,556 psi | 70% | 2740 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 48,776 psi | 76% | 2848 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 40,611 psi | 64% | 2785 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,924 psi | 52% | 2526 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 44,092 psi | 69% | 2753 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 84% | 36,550 psi | 57% | 2621 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 51,459 psi | 81% | 2831 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,488 psi | 81% | 2851 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 43% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,801 psi | 67% | 2677 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,892 psi | 75% | 2861 fps | 99.6% |
| ReloadSwiss RS 60 | 35.3 gr | 80% | 38,870 psi | 61% | 2730 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,489 psi | 51% | 2543 fps | 95.2% |
| ReloadSwiss RS 70 | 36.7 gr | 82% | 34,214 psi | 54% | 2595 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 52,591 psi | 82% | 2792 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,948 psi | 72% | 2707 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,610 psi | 62% | 2635 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 52,576 psi | 82% | 2877 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 45,934 psi | 72% | 2822 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 42,569 psi | 67% | 2664 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,390 psi | 57% | 2536 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,298 psi | 77% | 2789 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,135 psi | 69% | 2694 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 39,465 psi | 62% | 2625 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,379 psi | 63% | 2684 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,038 psi | 78% | 2805 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,732 psi | 75% | 2776 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,371 psi | 77% | 2697 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,423 psi | 65% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,553 psi | 64% | 2589 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,484 psi | 71% | 2815 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 49,066 psi | 77% | 2697 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,719 psi | 78% | 2799 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,103 psi | 63% | 2635 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,617 psi | 46% | 2480 fps | 97.9% |
| Somchem S385 | <<locked>> | 94% | 43,729 psi | 69% | 2746 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 49,821 psi | 78% | 2684 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,905 psi | 72% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,354 psi | 73% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,305 psi | 60% | 2569 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,389 psi | 54% | 2530 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 80% | 51,706 psi | 81% | 2808 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,715 psi | 70% | 2687 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,808 psi | 53% | 2526 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 31,183 psi | 49% | 2530 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,707 psi | 53% | 2500 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 51,895 psi | 81% | 2858 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,001 psi | 63% | 2694 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,689 psi | 45% | 2536 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,688 psi | 75% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,557 psi | 73% | 2792 fps | 95.1% |
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 103 powders for 6 mm XC loaded with the .243 | 105gr | Berger BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,785 fps to 3,045 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 6 mm XC with the .243 | 105gr | Berger 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.