Load Specifications
Bullet:.243 | 115gr | Barnes RNSP
Bullet Manufacturer:Barnes
Bullet Weight:115 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:1:10.5
Load data in caliber 6 mm XC with .243 | 115gr | Barnes RNSP bullet and 106 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-26 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 57,479 psi | 90% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,376 psi | 87% | 2749 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 2792 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 54,288 psi | 85% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,723 psi | 86% | 2838 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,276 psi | 90% | 2992 fps | 97.9% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,592 psi | 86% | 2933 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 82% | 57,043 psi | 89% | 2812 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,607 psi | 86% | 2766 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,912 psi | 88% | 2884 fps | 98.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 2874 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,624 psi | 90% | 2943 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,811 psi | 87% | 2881 fps | 98.4% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,811 psi | 87% | 2881 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,376 psi | 87% | 2789 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,463 psi | 87% | 2808 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,854 psi | 88% | 2897 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,159 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,042 psi | 86% | 2871 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2871 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,139 psi | 77% | 2805 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,873 psi | 67% | 2730 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 3005 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,710 psi | 89% | 2828 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,863 psi | 75% | 2795 fps | 97% |
| Bofors RP3 | <<locked>> | 86% | 56,217 psi | 88% | 2808 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2871 fps | 98% |
| Bofors RP7 | <<locked>> | 90% | 55,593 psi | 87% | 2792 fps | 99% |
| Hodgdon H380 | <<locked>> | 86% | 56,637 psi | 89% | 2825 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 57,261 psi | 90% | 2897 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 90% | 56,985 psi | 89% | 2851 fps | 98.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,290 psi | 90% | 2877 fps | 96.8% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,985 psi | 88% | 2858 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 82% | 57,682 psi | 90% | 2818 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,825 psi | 87% | 2818 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,041 psi | 85% | 2802 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,377 psi | 90% | 2933 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 57% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,201 psi | 87% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,522 psi | 90% | 2799 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,811 psi | 89% | 2785 fps | 99.4% |
| IMR 4350 | <<locked>> | 94% | 56,420 psi | 88% | 2828 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,029 psi | 89% | 2815 fps | 99.4% |
| IMR 4831 | <<locked>> | 94% | 55,129 psi | 86% | 2831 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,942 psi | 89% | 2835 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,419 psi | 87% | 2815 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,097 psi | 80% | 2848 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 57,276 psi | 90% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,637 psi | 87% | 2733 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,520 psi | 85% | 2746 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,217 psi | 90% | 2815 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 54,897 psi | 86% | 2802 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,569 psi | 68% | 2641 fps | 98.3% |
| Norma 201 | <<locked>> | 82% | 55,608 psi | 87% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,318 psi | 88% | 2746 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,752 psi | 86% | 2795 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,116 psi | 90% | 2877 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 55,259 psi | 87% | 2956 fps | 99.4% |
| Norma URP | <<locked>> | 94% | 57,377 psi | 90% | 2881 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,695 psi | 87% | 2828 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2864 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 94% | 55,912 psi | 88% | 2881 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,324 psi | 71% | 2733 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 58% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,623 psi | 89% | 2812 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,579 psi | 89% | 2877 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,637 psi | 89% | 2913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,563 psi | 86% | 2864 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,898 psi | 89% | 2946 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,756 psi | 65% | 2746 fps | 97% |
| Rottweil R 902 | <<locked>> | 84% | 56,144 psi | 88% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,086 psi | 88% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,537 psi | 90% | 2854 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 98% | 54,331 psi | 85% | 2858 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 90% | 55,593 psi | 87% | 2792 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,217 psi | 90% | 2815 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,276 psi | 90% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 54,520 psi | 85% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,897 psi | 86% | 2802 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,230 psi | 85% | 2812 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,245 psi | 87% | 2782 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,652 psi | 89% | 2684 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,348 psi | 90% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,869 psi | 89% | 2769 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,290 psi | 90% | 2904 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 56,086 psi | 88% | 2677 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,682 psi | 90% | 2802 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,086 psi | 88% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,666 psi | 87% | 2792 fps | 96.4% |
| Somchem S365 | <<locked>> | 96% | 56,246 psi | 88% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,114 psi | 86% | 2838 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 57,116 psi | 90% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,753 psi | 89% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,739 psi | 89% | 2726 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,580 psi | 90% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,608 psi | 87% | 2818 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,821 psi | 80% | 2756 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 54,969 psi | 86% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,853 psi | 86% | 2828 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 2881 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 2943 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,172 psi | 86% | 2789 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,261 psi | 90% | 2897 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,599 psi | 70% | 2867 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,564 psi | 87% | 2792 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 2825 fps | 98.1% |
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 2495 | <<locked>> | 80% | 50,865 psi | 80% | 2635 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,530 psi | 76% | 2641 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 32,793 psi | 51% | 2411 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,211 psi | 76% | 2644 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,463 psi | 57% | 2510 fps | 98.1% |
| Accurate High Country | <<locked>> | 94% | 46,760 psi | 73% | 2812 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 98% | 50,894 psi | 80% | 2871 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 53,388 psi | 84% | 2756 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,411 psi | 71% | 2615 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 43,192 psi | 68% | 2657 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 96% | 46,833 psi | 73% | 2753 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,806 psi | 78% | 2825 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,236 psi | 68% | 2657 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,236 psi | 68% | 2657 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,021 psi | 72% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,950 psi | 77% | 2707 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,694 psi | 56% | 2520 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,379 psi | 63% | 2644 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,728 psi | 67% | 2651 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,670 psi | 67% | 2697 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,223 psi | 41% | 2283 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,402 psi | 52% | 2503 fps | 95.8% |
| Alliant Reloder-26 | 37.7 gr | 82% | 29,704 psi | 47% | 2441 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,142 psi | 83% | 2776 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 42,090 psi | 66% | 2684 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 46,180 psi | 72% | 2654 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,670 psi | 67% | 2697 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 40,770 psi | 64% | 2526 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 46,673 psi | 73% | 2664 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 38,464 psi | 60% | 2552 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 41,524 psi | 65% | 2579 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 50,270 psi | 79% | 2766 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,095 psi | 77% | 2746 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 54,027 psi | 85% | 2766 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,272 psi | 52% | 2418 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,531 psi | 79% | 2749 fps | 100% |
| Hodgdon Superformance | 37.9 gr | 80% | 37,275 psi | 58% | 2559 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 42% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,692 psi | 81% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,776 psi | 75% | 2648 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,227 psi | 79% | 2680 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 38,841 psi | 61% | 2510 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,090 psi | 66% | 2556 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 35,186 psi | 55% | 2464 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 50,212 psi | 79% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,950 psi | 77% | 2707 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 98% | 47,674 psi | 75% | 2785 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 80% | 53,954 psi | 85% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,504 psi | 82% | 2684 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,080 psi | 75% | 2648 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,740 psi | 62% | 2510 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 37,768 psi | 59% | 2487 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 33,837 psi | 53% | 2438 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 52,431 psi | 82% | 2703 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,098 psi | 83% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,312 psi | 76% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,772 psi | 69% | 2651 fps | 95.6% |
| Norma MRP | <<locked>> | 88% | 36,825 psi | 58% | 2595 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 36,260 psi | 57% | 2500 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 48,370 psi | 76% | 2713 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,703 psi | 75% | 2799 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 35,157 psi | 55% | 2487 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 39,305 psi | 62% | 2608 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,833 psi | 44% | 1572 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,586 psi | 73% | 2644 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,794 psi | 83% | 2822 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,888 psi | 67% | 2697 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,303 psi | 57% | 2530 fps | 97.8% |
| ReloadSwiss RS 70 | 36.4 gr | 80% | 35,128 psi | 55% | 2530 fps | 97% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,030 psi | 61% | 2680 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 49,922 psi | 78% | 2657 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,294 psi | 68% | 2595 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,688 psi | 75% | 2690 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 90% | 41,742 psi | 65% | 2635 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 40,770 psi | 64% | 2526 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,740 psi | 62% | 2510 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,954 psi | 85% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,080 psi | 75% | 2648 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,768 psi | 59% | 2487 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,382 psi | 70% | 2651 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,779 psi | 81% | 2730 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,316 psi | 84% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,005 psi | 71% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,812 psi | 61% | 2454 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,350 psi | 65% | 2628 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 52,982 psi | 83% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,027 psi | 85% | 2749 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,932 psi | 69% | 2602 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 52,141 psi | 82% | 2736 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 32,779 psi | 51% | 2461 fps | 99.6% |
| Somchem S385 | <<locked>> | 88% | 39,595 psi | 62% | 2559 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 53,867 psi | 84% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,256 psi | 79% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,053 psi | 78% | 2631 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,698 psi | 65% | 2530 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,724 psi | 59% | 2503 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 38,856 psi | 61% | 2536 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 48,617 psi | 76% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,347 psi | 59% | 2510 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 28,572 psi | 45% | 2352 fps | 96% |
| Vihtavuori N560 | <<locked>> | 96% | 48,602 psi | 76% | 2822 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,854 psi | 58% | 2477 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 38,464 psi | 60% | 2552 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,584 psi | 39% | 2303 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,982 psi | 81% | 2740 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,640 psi | 65% | 2598 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 106 powders for 6 mm XC loaded with the .243 | 115gr | Barnes RNSP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,716 fps to 3,005 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 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 115.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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-26, Hodgdon Superformance rank at the top here: for 6 mm XC with the .243 | 115gr | Barnes RNSP 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.