Load Specifications
Bullet:.243 | 95gr | Hornady SST
Bullet Manufacturer:Hornady
Bullet Weight:95 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:1:9.5
Load data in caliber 6 mm XC with .243 | 95gr | Hornady SST bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Hodgdon H414.
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>> | 84% | 57,261 psi | 90% | 2956 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,101 psi | 88% | 2982 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,143 psi | 85% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,143 psi | 86% | 2986 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,989 psi | 67% | 2864 fps | 96% |
| Accurate 4064 | <<locked>> | 90% | 55,941 psi | 88% | 3031 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,217 psi | 88% | 3123 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 56,347 psi | 88% | 3068 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 57,334 psi | 90% | 3068 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,085 psi | 86% | 3012 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,463 psi | 88% | 2989 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,202 psi | 88% | 3196 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 57,072 psi | 89% | 3081 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 57,493 psi | 90% | 3091 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,404 psi | 85% | 3054 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,956 psi | 89% | 3182 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,665 psi | 86% | 3159 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,973 psi | 64% | 2897 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,977 psi | 72% | 3071 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,289 psi | 88% | 3084 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 54,621 psi | 86% | 3051 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,418 psi | 85% | 3015 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,840 psi | 89% | 2995 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,810 psi | 86% | 3045 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,652 psi | 89% | 3150 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 55,405 psi | 87% | 3064 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 96% | 55,172 psi | 86% | 3117 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 94% | 55,680 psi | 87% | 3077 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 56,913 psi | 89% | 3077 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,635 psi | 84% | 3051 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,507 psi | 89% | 3114 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,970 psi | 88% | 3159 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 56% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,723 psi | 86% | 3025 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,811 psi | 89% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,956 psi | 89% | 3051 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,608 psi | 89% | 3025 fps | 97.9% |
| IMR 4350 | <<locked>> | 98% | 55,085 psi | 86% | 3048 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,420 psi | 88% | 3051 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,753 psi | 89% | 3117 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 55,753 psi | 87% | 3087 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,085 psi | 86% | 3012 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,246 psi | 88% | 3041 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,680 psi | 87% | 2989 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 56,507 psi | 89% | 3041 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,709 psi | 87% | 3041 fps | 98.8% |
| Lovex S070 | <<locked>> | 98% | 56,811 psi | 89% | 3081 fps | 98.2% |
| Norma 201 | <<locked>> | 86% | 55,071 psi | 86% | 3009 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,622 psi | 87% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,290 psi | 90% | 3100 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,854 psi | 88% | 3100 fps | 96% |
| Norma URP | <<locked>> | 98% | 54,882 psi | 86% | 3107 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 54,375 psi | 85% | 3071 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3163 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 55,317 psi | 87% | 3028 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,201 psi | 87% | 3054 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,825 psi | 87% | 3012 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,027 psi | 56% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,608 psi | 87% | 3041 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,143 psi | 86% | 3130 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,346 psi | 85% | 3159 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,941 psi | 88% | 3146 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,201 psi | 87% | 3176 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 55,767 psi | 87% | 2986 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,579 psi | 87% | 3009 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,491 psi | 85% | 3041 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,418 psi | 85% | 3015 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,709 psi | 87% | 3041 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,246 psi | 88% | 3041 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,507 psi | 89% | 3041 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,811 psi | 89% | 3081 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,173 psi | 88% | 3107 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 57,508 psi | 90% | 3064 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,810 psi | 86% | 3038 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,434 psi | 88% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,666 psi | 89% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,115 psi | 88% | 2995 fps | 97.8% |
| Somchem S321 | <<locked>> | 82% | 56,289 psi | 88% | 3045 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,854 psi | 88% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,392 psi | 90% | 3058 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 54,868 psi | 86% | 3041 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 3110 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,313 psi | 77% | 2979 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 82% | 56,144 psi | 88% | 2904 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,710 psi | 89% | 2930 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,434 psi | 87% | 2972 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,014 psi | 88% | 2986 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,028 psi | 88% | 3015 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,638 psi | 90% | 3107 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 55,608 psi | 87% | 3012 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,070 psi | 85% | 2979 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,579 psi | 89% | 3110 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,237 psi | 71% | 2979 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,302 psi | 85% | 3031 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,796 psi | 87% | 3064 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,172 psi | 86% | 3117 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,724 psi | 58% | 2900 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,708 psi | 86% | 3045 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% | 50,328 psi | 79% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,352 psi | 68% | 2782 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,575 psi | 79% | 2943 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,283 psi | 76% | 2864 fps | 95.3% |
| Accurate 3100 | <<locked>> | 98% | 40,321 psi | 63% | 2808 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 41,002 psi | 64% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,548 psi | 54% | 2694 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 46,499 psi | 73% | 2894 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 39,537 psi | 62% | 2730 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,573 psi | 76% | 2900 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,284 psi | 77% | 2887 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,380 psi | 66% | 2927 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,079 psi | 74% | 2907 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,479 psi | 62% | 2759 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,192 psi | 66% | 2825 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,679 psi | 54% | 2710 fps | 95.3% |
| Alliant Reloder-17 | 35.8 gr | 80% | 34,084 psi | 53% | 2723 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 32,053 psi | 50% | 2664 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,289 psi | 58% | 2864 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,876 psi | 72% | 2900 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 39,189 psi | 61% | 2762 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 48,341 psi | 76% | 2907 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,256 psi | 79% | 2890 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,616 psi | 75% | 2923 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,895 psi | 83% | 3087 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 80% | 40,001 psi | 63% | 2766 fps | 96.4% |
| Hodgdon H414 | 39.4 gr | 90% | 45,310 psi | 71% | 2933 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 90% | 49,081 psi | 77% | 2959 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 46,992 psi | 74% | 2907 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,834 psi | 47% | 2539 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,004 psi | 67% | 2874 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 92% | 48,385 psi | 76% | 3018 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,585 psi | 42% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,020 psi | 71% | 2851 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 47,021 psi | 74% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,524 psi | 65% | 2769 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,859 psi | 69% | 2789 fps | 95.1% |
| IMR 4350 | <<locked>> | 94% | 48,631 psi | 76% | 2933 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,092 psi | 69% | 2822 fps | 95% |
| IMR 4831 | <<locked>> | 86% | 35,737 psi | 56% | 2707 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 43,250 psi | 68% | 2858 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 80% | 48,573 psi | 76% | 2900 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 46,122 psi | 72% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,398 psi | 73% | 2828 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 41,611 psi | 65% | 2776 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 38,580 psi | 60% | 2707 fps | 95% |
| Lovex S070 | <<locked>> | 90% | 44,527 psi | 70% | 2858 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 45,716 psi | 72% | 2844 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,137 psi | 72% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,582 psi | 65% | 2812 fps | 98.5% |
| Norma 204 | <<locked>> | 96% | 52,069 psi | 82% | 3035 fps | 95.1% |
| Norma URP | <<locked>> | 84% | 34,751 psi | 54% | 2694 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 41,162 psi | 65% | 2825 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 41,307 psi | 65% | 2854 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 48,602 psi | 76% | 2910 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,037 psi | 75% | 2930 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,330 psi | 82% | 2956 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,890 psi | 42% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,047 psi | 67% | 2808 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,614 psi | 70% | 2936 fps | 98.6% |
| ReloadSwiss RS 60 | 35.8 gr | 80% | 36,274 psi | 57% | 2795 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,724 psi | 58% | 2772 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 39,363 psi | 62% | 2848 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 49,588 psi | 78% | 2887 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,468 psi | 68% | 2792 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 36,709 psi | 58% | 2697 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 48,341 psi | 76% | 2907 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,580 psi | 60% | 2707 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,122 psi | 72% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,611 psi | 65% | 2776 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 44,527 psi | 70% | 2858 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,710 psi | 59% | 2753 fps | 97.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,021 psi | 74% | 2884 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,962 psi | 70% | 2861 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,963 psi | 74% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,247 psi | 62% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,337 psi | 68% | 2766 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 52,707 psi | 83% | 2986 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,586 psi | 73% | 2795 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,688 psi | 73% | 2881 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 37,681 psi | 59% | 2710 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 27,340 psi | 43% | 2520 fps | 95.4% |
| Somchem S385 | <<locked>> | 98% | 46,021 psi | 72% | 2920 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 52,895 psi | 83% | 2858 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,369 psi | 74% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,192 psi | 68% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,410 psi | 68% | 2779 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,621 psi | 56% | 2638 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 36,318 psi | 57% | 2700 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 48,849 psi | 77% | 2900 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 42,134 psi | 66% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,824 psi | 56% | 2700 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 32,445 psi | 51% | 2684 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,618 psi | 50% | 2556 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 48,689 psi | 76% | 2949 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,310 psi | 71% | 2933 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,313 psi | 48% | 2687 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,759 psi | 70% | 2867 fps | 99.4% |
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 98 powders for 6 mm XC loaded with the .243 | 95gr | Hornady SST. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,196 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,196 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 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 95.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-16, Alliant Reloder-23 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. Alliant Reloder-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for 6 mm XC with the .243 | 95gr | Hornady SST 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.