Load Specifications
Load data in caliber 6 mm Creedmoor with .243 | 95gr | ShellHouse Castings SP Hard Cast bullet and 97 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 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% | 52,924 psi | 85% | 2894 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,433 psi | 88% | 2953 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,359 psi | 86% | 2982 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,462 psi | 88% | 2969 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,337 psi | 68% | 2844 fps | 96.3% |
| Accurate 4064 | <<locked>> | 90% | 54,926 psi | 89% | 3012 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,637 psi | 90% | 3104 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 55,912 psi | 90% | 3054 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 53,766 psi | 87% | 3002 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,781 psi | 88% | 3002 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,825 psi | 90% | 2972 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,156 psi | 84% | 3117 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,635 psi | 87% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,244 psi | 87% | 3045 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 53,592 psi | 86% | 3117 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,984 psi | 89% | 3153 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,669 psi | 66% | 2884 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,934 psi | 74% | 3061 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,854 psi | 90% | 3068 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 54,128 psi | 87% | 3035 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,114 psi | 87% | 3005 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,040 psi | 86% | 2933 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,186 psi | 87% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,100 psi | 89% | 3051 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 55,419 psi | 89% | 3114 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 94% | 55,622 psi | 90% | 3068 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 52,823 psi | 85% | 3009 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,534 psi | 86% | 3038 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,794 psi | 85% | 3045 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,985 psi | 90% | 3150 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,447 psi | 57% | 1880 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,491 psi | 88% | 3015 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,113 psi | 86% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,910 psi | 85% | 2982 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 52,678 psi | 85% | 2956 fps | 97.6% |
| IMR 4350 | <<locked>> | 98% | 54,955 psi | 89% | 3038 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 52,837 psi | 85% | 2986 fps | 97.6% |
| IMR 4831 | <<locked>> | 98% | 52,953 psi | 85% | 3045 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 55,666 psi | 90% | 3077 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,781 psi | 88% | 3002 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,419 psi | 89% | 3022 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,463 psi | 89% | 2982 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 52,591 psi | 85% | 2976 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,332 psi | 89% | 3031 fps | 99% |
| Lovex S070 | <<locked>> | 96% | 53,040 psi | 86% | 3012 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 54,273 psi | 88% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,187 psi | 89% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,447 psi | 86% | 3031 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,637 psi | 90% | 3087 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 45,672 psi | 74% | 3012 fps | 96% |
| Norma URP | <<locked>> | 98% | 55,129 psi | 89% | 3097 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 54,273 psi | 88% | 3058 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 53,795 psi | 87% | 3091 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 55,172 psi | 89% | 3022 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,752 psi | 88% | 3038 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,376 psi | 89% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,578 psi | 57% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,376 psi | 89% | 3035 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,766 psi | 88% | 3117 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,737 psi | 88% | 3153 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,014 psi | 90% | 3136 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,303 psi | 89% | 3166 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 54,766 psi | 88% | 2969 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,810 psi | 88% | 2992 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 53,983 psi | 87% | 3028 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,114 psi | 87% | 3005 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,332 psi | 89% | 3031 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,419 psi | 89% | 3022 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 52,591 psi | 85% | 2976 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,040 psi | 86% | 3012 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,446 psi | 85% | 3038 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 52,895 psi | 85% | 2867 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,447 psi | 86% | 2995 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,346 psi | 88% | 3022 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,753 psi | 90% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,026 psi | 86% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,680 psi | 90% | 2982 fps | 98.1% |
| Somchem S335 | <<locked>> | 86% | 55,303 psi | 89% | 2927 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,243 psi | 86% | 2986 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 54,085 psi | 87% | 3025 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,316 psi | 86% | 3097 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,052 psi | 79% | 2969 fps | 96.3% |
| Vihtavuori N130 | <<locked>> | 82% | 55,564 psi | 90% | 2890 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 52,895 psi | 85% | 2867 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,940 psi | 89% | 2956 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,608 psi | 90% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,782 psi | 90% | 3002 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,041 psi | 87% | 3041 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 55,245 psi | 89% | 3002 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,896 psi | 87% | 2969 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 52,939 psi | 85% | 3041 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,933 psi | 72% | 2963 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,375 psi | 88% | 3018 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,419 psi | 89% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,419 psi | 89% | 3114 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,013 psi | 58% | 2881 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,230 psi | 87% | 3028 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% | 49,342 psi | 80% | 2841 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,321 psi | 67% | 2746 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,777 psi | 80% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,601 psi | 77% | 2851 fps | 95.7% |
| Accurate 3100 | <<locked>> | 98% | 39,247 psi | 63% | 2779 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 39,175 psi | 63% | 2740 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,373 psi | 54% | 2664 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 45,672 psi | 74% | 2877 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 38,827 psi | 63% | 2717 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,892 psi | 77% | 2887 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 48,660 psi | 78% | 2871 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,916 psi | 68% | 2913 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,537 psi | 62% | 2740 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,220 psi | 66% | 2805 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,779 psi | 54% | 2687 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,315 psi | 54% | 2703 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,038 psi | 50% | 2635 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,666 psi | 59% | 2844 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,368 psi | 73% | 2884 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 37,855 psi | 61% | 2733 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 44,440 psi | 72% | 2828 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,647 psi | 80% | 2877 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,934 psi | 76% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,899 psi | 63% | 2743 fps | 96.5% |
| Hodgdon H414 | <<locked>> | 88% | 41,974 psi | 68% | 2858 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 48,979 psi | 79% | 2953 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 46,108 psi | 74% | 2890 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,979 psi | 47% | 2520 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,540 psi | 69% | 2861 fps | 99.5% |
| Hodgdon Superformance | 43.7 gr | 90% | 44,701 psi | 72% | 2940 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,150 psi | 42% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,425 psi | 72% | 2841 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 46,325 psi | 75% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,785 psi | 66% | 2756 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,424 psi | 70% | 2782 fps | 95.4% |
| IMR 4350 | <<locked>> | 92% | 45,237 psi | 73% | 2864 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,627 psi | 70% | 2812 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 34,795 psi | 56% | 2684 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 42,293 psi | 68% | 2838 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 47,892 psi | 77% | 2887 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 44,904 psi | 72% | 2851 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,788 psi | 74% | 2815 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 40,538 psi | 65% | 2756 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 37,695 psi | 61% | 2690 fps | 95.2% |
| Lovex S070 | <<locked>> | 90% | 43,598 psi | 70% | 2838 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 44,541 psi | 72% | 2825 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 45,252 psi | 73% | 2838 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,582 psi | 65% | 2792 fps | 98.6% |
| Norma 204 | <<locked>> | 96% | 51,866 psi | 84% | 3025 fps | 95.6% |
| Norma MRP | <<locked>> | 98% | 42,540 psi | 69% | 2943 fps | 95% |
| Norma URP | <<locked>> | 84% | 33,982 psi | 55% | 2674 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 40,567 psi | 65% | 2808 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 40,814 psi | 66% | 2844 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 48,109 psi | 78% | 2900 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,558 psi | 77% | 2917 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,909 psi | 84% | 2943 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 42% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,351 psi | 68% | 2792 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,164 psi | 71% | 2923 fps | 98.8% |
| ReloadSwiss RS 60 | 36.8 gr | 80% | 35,607 psi | 57% | 2779 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,056 psi | 58% | 2753 fps | 95.8% |
| ReloadSwiss RS 70 | 41.1 gr | 88% | 38,798 psi | 63% | 2831 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 48,167 psi | 78% | 2864 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,264 psi | 68% | 2772 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,665 psi | 58% | 2677 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 44,440 psi | 72% | 2828 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,695 psi | 61% | 2690 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,904 psi | 72% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,538 psi | 65% | 2756 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 43,598 psi | 70% | 2838 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,072 psi | 60% | 2736 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,441 psi | 75% | 2769 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,224 psi | 75% | 2867 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,483 psi | 72% | 2848 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,905 psi | 74% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,189 psi | 62% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,453 psi | 68% | 2749 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 45,614 psi | 74% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,166 psi | 74% | 2867 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 36,506 psi | 59% | 2684 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 26,295 psi | 42% | 2490 fps | 95.3% |
| Somchem S385 | <<locked>> | 98% | 45,701 psi | 74% | 2907 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 51,909 psi | 84% | 2838 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,441 psi | 75% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,916 psi | 68% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,917 psi | 69% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,853 psi | 56% | 2618 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 35,592 psi | 57% | 2680 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 48,095 psi | 78% | 2884 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,147 psi | 66% | 2749 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,940 psi | 56% | 2677 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 90% | 31,546 psi | 51% | 2657 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,777 psi | 50% | 2536 fps | 96.3% |
| Winchester 748 | <<locked>> | 80% | 48,298 psi | 78% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 41,974 psi | 68% | 2858 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,240 psi | 47% | 2654 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,179 psi | 71% | 2854 fps | 99.5% |
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 97 powders for 6 mm Creedmoor loaded with the .243 | 95gr | ShellHouse Castings SP Hard Cast. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,880 fps to 3,166 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 95.0 gr projectile in 0.243" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, ReloadSwiss RS 60 rank at the top here: for 6 mm Creedmoor with the .243 | 95gr | ShellHouse Castings SP Hard Cast 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.