Load Specifications
Bullet Manufacturer:Speer
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:1:10.0
Load data in caliber 6 mm XC with .243 | 105gr | Speer Spitzer Soft Point bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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% | 57,740 psi | 90% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,130 psi | 90% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,288 psi | 87% | 2864 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,935 psi | 75% | 2835 fps | 98.3% |
| Accurate 4064 | <<locked>> | 88% | 57,566 psi | 90% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,259 psi | 85% | 2956 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 57,014 psi | 89% | 2936 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,621 psi | 86% | 2890 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,405 psi | 87% | 2992 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,608 psi | 87% | 2881 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,392 psi | 90% | 2851 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,985 psi | 89% | 3064 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 54,114 psi | 85% | 2894 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,114 psi | 86% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,259 psi | 87% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,781 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,144 psi | 88% | 3041 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 2976 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2913 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,237 psi | 71% | 2861 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,697 psi | 62% | 2762 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,198 psi | 80% | 3045 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,811 psi | 89% | 2956 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 55,782 psi | 87% | 2930 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2913 fps | 96% |
| Bofors RP7 | <<locked>> | 92% | 55,492 psi | 87% | 2907 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,087 psi | 89% | 2861 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,405 psi | 87% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,347 psi | 88% | 2943 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 56,507 psi | 89% | 3005 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 92% | 56,608 psi | 89% | 2963 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 84% | 57,624 psi | 90% | 2946 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,071 psi | 86% | 2933 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,638 psi | 90% | 2986 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,797 psi | 89% | 3045 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,955 psi | 56% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,259 psi | 87% | 2897 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,317 psi | 85% | 2871 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,537 psi | 90% | 2923 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,014 psi | 89% | 2907 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 56,028 psi | 88% | 2936 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,014 psi | 89% | 2933 fps | 98.8% |
| IMR 4831 | <<locked>> | 96% | 54,781 psi | 86% | 2949 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 56,652 psi | 89% | 2959 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,608 psi | 87% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,319 psi | 90% | 2913 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,927 psi | 88% | 2858 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,653 psi | 90% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,971 psi | 89% | 2930 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 54,520 psi | 85% | 2917 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,943 psi | 63% | 2680 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 55,637 psi | 87% | 2877 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,333 psi | 88% | 2877 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,491 psi | 85% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,942 psi | 89% | 2992 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 50,763 psi | 80% | 2999 fps | 98% |
| Norma URP | <<locked>> | 96% | 56,666 psi | 89% | 2995 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,143 psi | 86% | 2946 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,434 psi | 87% | 2995 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 55,883 psi | 88% | 2910 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,651 psi | 87% | 2920 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,622 psi | 57% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,405 psi | 88% | 2927 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,449 psi | 88% | 3009 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,767 psi | 87% | 3035 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 57,725 psi | 90% | 3035 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,478 psi | 89% | 3064 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 56,652 psi | 89% | 2858 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,159 psi | 88% | 2877 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,608 psi | 87% | 2920 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,101 psi | 89% | 2959 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,447 psi | 84% | 2959 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 55,492 psi | 87% | 2907 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,971 psi | 89% | 2930 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,319 psi | 90% | 2913 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,653 psi | 90% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,520 psi | 85% | 2917 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,392 psi | 90% | 2986 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,592 psi | 86% | 2887 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,492 psi | 87% | 2910 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,608 psi | 89% | 2808 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,537 psi | 90% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,217 psi | 90% | 2887 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,953 psi | 83% | 2956 fps | 97.1% |
| Somchem S335 | <<locked>> | 84% | 56,275 psi | 88% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,186 psi | 85% | 2874 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,796 psi | 87% | 2917 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,434 psi | 87% | 2999 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,259 psi | 85% | 2940 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 84% | 57,029 psi | 89% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,246 psi | 88% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,724 psi | 89% | 2854 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,319 psi | 90% | 2894 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,434 psi | 87% | 2936 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,586 psi | 73% | 2795 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 82% | 56,101 psi | 88% | 2881 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,824 psi | 86% | 2848 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,201 psi | 85% | 2936 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,546 psi | 79% | 2940 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,955 psi | 86% | 2907 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,739 psi | 89% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,971 psi | 89% | 3015 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,611 psi | 64% | 2894 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,245 psi | 87% | 2913 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,807 psi | 80% | 2874 fps | 96.3% |
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% | 54,360 psi | 85% | 2776 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,166 psi | 74% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,716 psi | 72% | 2697 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 36,564 psi | 57% | 2605 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 44,628 psi | 70% | 2707 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,547 psi | 53% | 2549 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,328 psi | 79% | 2831 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,801 psi | 67% | 2680 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 48,718 psi | 76% | 2874 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,431 psi | 82% | 2831 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,896 psi | 84% | 2805 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,354 psi | 73% | 2884 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,039 psi | 80% | 2844 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,801 psi | 67% | 2700 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,934 psi | 72% | 2772 fps | 99.5% |
| Alliant Reloder-16 | 33.4 gr | 80% | 33,301 psi | 52% | 2559 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,159 psi | 58% | 2684 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,121 psi | 71% | 2808 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,846 psi | 70% | 2851 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,427 psi | 43% | 2415 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,070 psi | 55% | 2644 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,460 psi | 52% | 2648 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,835 psi | 78% | 2844 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,699 psi | 67% | 2710 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,846 psi | 70% | 2851 fps | 95.1% |
| Bofors RP7 | <<locked>> | 84% | 43,163 psi | 68% | 2684 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,505 psi | 84% | 2808 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,822 psi | 81% | 2858 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,352 psi | 68% | 2717 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 40,611 psi | 64% | 2713 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 44,077 psi | 69% | 2740 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,894 psi | 80% | 2841 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,850 psi | 48% | 2461 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,137 psi | 74% | 2818 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,627 psi | 67% | 2785 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 42% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,747 psi | 76% | 2792 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,010 psi | 80% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,005 psi | 71% | 2713 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,181 psi | 74% | 2736 fps | 97.2% |
| IMR 4350 | <<locked>> | 86% | 40,901 psi | 64% | 2661 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,668 psi | 62% | 2608 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 32,314 psi | 51% | 2500 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 47,108 psi | 74% | 2802 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,431 psi | 82% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,067 psi | 78% | 2805 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,472 psi | 78% | 2756 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,860 psi | 70% | 2710 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,014 psi | 58% | 2556 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 40,074 psi | 63% | 2644 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 37,478 psi | 59% | 2628 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 49,081 psi | 77% | 2776 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,632 psi | 78% | 2776 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,310 psi | 71% | 2759 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,354 psi | 73% | 2808 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 41,321 psi | 65% | 2808 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 33,620 psi | 53% | 2546 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 45,121 psi | 71% | 2776 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,347 psi | 59% | 2648 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 52,431 psi | 82% | 2851 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,127 psi | 82% | 2867 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,456 psi | 43% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,424 psi | 68% | 2697 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,124 psi | 77% | 2887 fps | 99.8% |
| ReloadSwiss RS 60 | 35.9 gr | 80% | 39,494 psi | 62% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,098 psi | 52% | 2559 fps | 95.6% |
| ReloadSwiss RS 70 | 37.4 gr | 82% | 34,983 psi | 55% | 2621 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 53,476 psi | 84% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,702 psi | 73% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,364 psi | 63% | 2654 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 98% | 53,795 psi | 84% | 2907 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 96% | 46,789 psi | 73% | 2841 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 43,163 psi | 68% | 2684 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,014 psi | 58% | 2556 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,067 psi | 78% | 2805 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,860 psi | 70% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,074 psi | 63% | 2644 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,365 psi | 65% | 2707 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,053 psi | 80% | 2828 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,718 psi | 76% | 2802 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,154 psi | 79% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,177 psi | 66% | 2579 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,711 psi | 61% | 2552 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,398 psi | 73% | 2838 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,806 psi | 78% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,749 psi | 80% | 2822 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,814 psi | 64% | 2654 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,197 psi | 47% | 2500 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 41,640 psi | 65% | 2710 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 50,604 psi | 79% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,760 psi | 73% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,108 psi | 74% | 2710 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,972 psi | 61% | 2589 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,056 psi | 55% | 2549 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 98% | 43,845 psi | 69% | 2743 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 52,446 psi | 82% | 2825 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,382 psi | 71% | 2700 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,432 psi | 54% | 2546 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 29,863 psi | 47% | 2493 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,447 psi | 54% | 2523 fps | 98.4% |
| Winchester 748 | <<locked>> | 80% | 53,055 psi | 83% | 2881 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,915 psi | 64% | 2720 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,441 psi | 43% | 2493 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,356 psi | 76% | 2802 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,297 psi | 74% | 2812 fps | 95.4% |
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 105 powders for 6 mm XC loaded with the .243 | 105gr | Speer Spitzer Soft Point. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,064 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,064 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 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 1:10.0 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 60, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 6 mm XC with the .243 | 105gr | Speer Spitzer Soft Point 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.