Load Specifications
Bullet Manufacturer:Barnes
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:1:8.5
Load data in caliber 6 mm XC with .243 | 105gr | Barnes Match Burner BT bullet and 101 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 56,376 psi | 88% | 2795 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,927 psi | 88% | 2828 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,971 psi | 89% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,070 psi | 85% | 2831 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,441 psi | 73% | 2799 fps | 97.9% |
| Accurate 4064 | <<locked>> | 88% | 55,999 psi | 88% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,985 psi | 88% | 2976 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 55,492 psi | 87% | 2907 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,550 psi | 89% | 2910 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,983 psi | 85% | 2956 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,476 psi | 85% | 2854 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,956 psi | 88% | 2828 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,550 psi | 87% | 3035 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 56,217 psi | 88% | 2917 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,985 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,551 psi | 90% | 2959 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,884 psi | 89% | 3035 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,433 psi | 85% | 3009 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,866 psi | 83% | 2943 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,859 psi | 69% | 2828 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,609 psi | 61% | 2726 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,472 psi | 78% | 3005 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,477 psi | 87% | 2927 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 54,302 psi | 85% | 2900 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,624 psi | 90% | 2930 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,028 psi | 88% | 2835 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,725 psi | 90% | 2936 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,969 psi | 86% | 2913 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 54,882 psi | 86% | 2972 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 55,405 psi | 87% | 2933 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 56,130 psi | 88% | 2917 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,869 psi | 89% | 2953 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,811 psi | 87% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,013 psi | 86% | 3005 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,795 psi | 56% | 1775 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,130 psi | 90% | 2917 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,362 psi | 88% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,101 psi | 88% | 2890 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,738 psi | 87% | 2874 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 54,520 psi | 85% | 2904 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,825 psi | 87% | 2904 fps | 98.5% |
| IMR 4831 | <<locked>> | 98% | 56,463 psi | 88% | 2966 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 55,187 psi | 86% | 2930 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,476 psi | 85% | 2854 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,753 psi | 87% | 2884 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,926 psi | 86% | 2835 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,202 psi | 88% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,361 psi | 87% | 2897 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 56,608 psi | 89% | 2936 fps | 98.8% |
| Norma 201 | <<locked>> | 84% | 54,505 psi | 85% | 2854 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,766 psi | 86% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,753 psi | 89% | 2943 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,998 psi | 86% | 2953 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 49,037 psi | 77% | 2956 fps | 97.5% |
| Norma URP | <<locked>> | 96% | 54,926 psi | 86% | 2963 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 57,595 psi | 90% | 2972 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,334 psi | 90% | 3018 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 54,636 psi | 86% | 2881 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,230 psi | 85% | 2890 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,463 psi | 57% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,187 psi | 86% | 2897 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,810 psi | 86% | 2972 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,418 psi | 85% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,608 psi | 87% | 2999 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,621 psi | 86% | 3025 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 55,405 psi | 87% | 2831 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,071 psi | 86% | 2854 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,653 psi | 90% | 2943 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,680 psi | 87% | 2927 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,866 psi | 81% | 2927 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 57,624 psi | 90% | 2930 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,361 psi | 87% | 2897 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,753 psi | 87% | 2884 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,202 psi | 88% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,608 psi | 89% | 2936 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,666 psi | 87% | 2949 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,000 psi | 89% | 2913 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,421 psi | 90% | 2930 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,463 psi | 87% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,072 psi | 88% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,651 psi | 87% | 2851 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,416 psi | 81% | 2920 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 55,201 psi | 87% | 2785 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,536 psi | 89% | 2900 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,346 psi | 85% | 2887 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3018 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,359 psi | 82% | 2900 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 84% | 55,854 psi | 88% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,940 psi | 86% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,637 psi | 87% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,564 psi | 87% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,203 psi | 90% | 2956 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 54,984 psi | 86% | 2854 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,174 psi | 90% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,304 psi | 88% | 2963 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,878 psi | 77% | 2907 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,392 psi | 90% | 2933 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,216 psi | 87% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,882 psi | 86% | 2972 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,160 psi | 61% | 2851 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,638 psi | 90% | 2940 fps | 100% |
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% | 53,069 psi | 83% | 2749 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,861 psi | 72% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,548 psi | 84% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,498 psi | 70% | 2664 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 37,811 psi | 59% | 2628 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,381 psi | 68% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,227 psi | 51% | 2510 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 48,834 psi | 77% | 2795 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,785 psi | 65% | 2651 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 47,340 psi | 74% | 2835 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,937 psi | 80% | 2799 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,475 psi | 82% | 2779 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,005 psi | 71% | 2848 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 49,487 psi | 78% | 2808 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,713 psi | 65% | 2674 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,469 psi | 70% | 2736 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,416 psi | 51% | 2526 fps | 95.6% |
| Alliant Reloder-17 | 35 gr | 80% | 36,230 psi | 57% | 2654 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,470 psi | 73% | 2825 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,369 psi | 44% | 2438 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,100 psi | 57% | 2661 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,650 psi | 54% | 2674 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,530 psi | 76% | 2812 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 41,611 psi | 65% | 2680 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,250 psi | 66% | 2654 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,417 psi | 82% | 2782 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,401 psi | 79% | 2828 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,322 psi | 66% | 2687 fps | 98% |
| Hodgdon H414 | <<locked>> | 86% | 42,221 psi | 66% | 2740 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 86% | 45,527 psi | 71% | 2759 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 49,342 psi | 77% | 2808 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,921 psi | 47% | 2428 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,687 psi | 72% | 2785 fps | 100% |
| Hodgdon Superformance | 39.7 gr | 86% | 41,365 psi | 65% | 2746 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,716 psi | 42% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,268 psi | 74% | 2756 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,647 psi | 78% | 2795 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,903 psi | 69% | 2684 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,224 psi | 72% | 2710 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 42,554 psi | 67% | 2684 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,162 psi | 65% | 2631 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 31,314 psi | 49% | 2470 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 45,571 psi | 71% | 2766 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,937 psi | 80% | 2799 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,892 psi | 77% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,385 psi | 76% | 2726 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,758 psi | 69% | 2680 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,056 psi | 56% | 2526 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 38,841 psi | 61% | 2608 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,921 psi | 75% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,457 psi | 76% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,830 psi | 69% | 2723 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 48,182 psi | 76% | 2835 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 42,946 psi | 67% | 2835 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,590 psi | 51% | 2516 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 43,743 psi | 69% | 2743 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 38,522 psi | 60% | 2667 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 51,169 psi | 80% | 2822 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,720 psi | 79% | 2835 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 43% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,525 psi | 67% | 2667 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,500 psi | 74% | 2851 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,551 psi | 60% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,301 psi | 54% | 2585 fps | 95.9% |
| ReloadSwiss RS 70 | 37.3 gr | 84% | 36,405 psi | 57% | 2651 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 52,170 psi | 82% | 2782 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,905 psi | 72% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,233 psi | 61% | 2625 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 52,301 psi | 82% | 2871 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 96% | 45,310 psi | 71% | 2805 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 84% | 42,250 psi | 66% | 2654 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,056 psi | 56% | 2526 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,892 psi | 77% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,758 psi | 69% | 2680 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,841 psi | 61% | 2608 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,030 psi | 63% | 2671 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,734 psi | 78% | 2799 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,340 psi | 74% | 2766 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,979 psi | 77% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,060 psi | 64% | 2552 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,248 psi | 63% | 2579 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,834 psi | 75% | 2854 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,689 psi | 76% | 2687 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,400 psi | 77% | 2789 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,726 psi | 62% | 2625 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,298 psi | 46% | 2467 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 43,134 psi | 68% | 2733 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 49,414 psi | 77% | 2674 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,440 psi | 71% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,977 psi | 72% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,956 psi | 59% | 2562 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,808 psi | 53% | 2513 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 51,300 psi | 80% | 2799 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,382 psi | 70% | 2677 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,518 psi | 53% | 2516 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 86% | 30,589 psi | 48% | 2510 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,489 psi | 52% | 2493 fps | 98% |
| Winchester 748 | <<locked>> | 80% | 51,532 psi | 81% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,668 psi | 62% | 2684 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,311 psi | 44% | 2516 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,369 psi | 74% | 2779 fps | 99.9% |
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 101 powders for 6 mm XC loaded with the .243 | 105gr | Barnes Match Burner BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,775 fps to 3,035 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 6 mm XC with the .243 | 105gr | Barnes Match Burner 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.