Load Specifications
Load data in caliber 6 mm Creedmoor with .243 | 103gr | Hornady ELD-X 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, Alliant Reloder-17 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.
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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% | 54,346 psi | 88% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,057 psi | 90% | 2884 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,689 psi | 79% | 2851 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 54,360 psi | 88% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,723 psi | 88% | 2969 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,853 psi | 87% | 2900 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,042 psi | 89% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 52,460 psi | 85% | 2946 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,043 psi | 90% | 2897 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,664 psi | 87% | 3022 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,550 psi | 90% | 2930 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,680 psi | 90% | 2946 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,564 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,171 psi | 86% | 3002 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,998 psi | 89% | 2992 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,675 psi | 79% | 2930 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,919 psi | 74% | 2877 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,219 psi | 65% | 2779 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,402 psi | 85% | 3068 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,621 psi | 86% | 2913 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 52,533 psi | 85% | 2887 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,675 psi | 79% | 2930 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 55,840 psi | 90% | 2920 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,854 psi | 90% | 2927 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,098 psi | 86% | 2900 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 53,635 psi | 87% | 2966 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 53,751 psi | 87% | 2923 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 54,447 psi | 88% | 2907 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,506 psi | 90% | 2943 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,389 psi | 88% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,737 psi | 87% | 3002 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 58% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,288 psi | 89% | 2907 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,882 psi | 89% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,273 psi | 88% | 2884 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,824 psi | 87% | 2864 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 53,185 psi | 86% | 2897 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,201 psi | 87% | 2897 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 55,187 psi | 89% | 2959 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 53,896 psi | 87% | 2927 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,043 psi | 90% | 2897 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,070 psi | 87% | 2874 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,881 psi | 85% | 2822 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,462 psi | 88% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,128 psi | 87% | 2894 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 55,259 psi | 89% | 2933 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,306 psi | 65% | 2694 fps | 96.7% |
| Norma 201 | <<locked>> | 82% | 52,562 psi | 85% | 2841 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,156 psi | 86% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,955 psi | 89% | 2933 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,476 psi | 86% | 2940 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,474 psi | 83% | 3015 fps | 98.3% |
| Norma URP | <<locked>> | 94% | 53,722 psi | 87% | 2956 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,927 psi | 90% | 2963 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,767 psi | 90% | 3005 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,086 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 59% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,200 psi | 86% | 2884 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,127 psi | 86% | 2963 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,881 psi | 85% | 2999 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,694 psi | 88% | 2995 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,476 psi | 86% | 3022 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 53,447 psi | 86% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 52,823 psi | 85% | 2884 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,070 psi | 87% | 2917 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,244 psi | 87% | 2979 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 55,840 psi | 90% | 2920 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,128 psi | 87% | 2894 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,070 psi | 87% | 2874 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,462 psi | 88% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,259 psi | 89% | 2933 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,114 psi | 87% | 2943 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,013 psi | 89% | 2900 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,535 psi | 90% | 2917 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,795 psi | 87% | 2779 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,244 psi | 87% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,795 psi | 87% | 2841 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,751 psi | 87% | 2972 fps | 97.3% |
| Somchem S335 | <<locked>> | 82% | 53,214 psi | 86% | 2772 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,592 psi | 88% | 2887 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,055 psi | 86% | 2884 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,869 psi | 90% | 3009 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,984 psi | 89% | 2956 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 54,259 psi | 88% | 2762 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,432 psi | 86% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,925 psi | 87% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,041 psi | 87% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,840 psi | 90% | 2949 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,268 psi | 76% | 2812 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 86% | 55,245 psi | 89% | 2864 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,969 psi | 89% | 2956 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,329 psi | 83% | 2956 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,637 psi | 90% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,635 psi | 87% | 2966 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,176 psi | 66% | 2910 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,666 psi | 90% | 2927 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2887 fps | 96.6% |
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% | 47,703 psi | 77% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,774 psi | 74% | 2707 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 36,927 psi | 60% | 2621 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 45,150 psi | 73% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,678 psi | 54% | 2562 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 80% | 50,430 psi | 81% | 2841 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,931 psi | 69% | 2694 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 46,151 psi | 74% | 2828 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,533 psi | 85% | 2844 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,775 psi | 75% | 2900 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,221 psi | 70% | 2720 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,021 psi | 74% | 2782 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,402 psi | 54% | 2572 fps | 96.3% |
| Alliant Reloder-17 | 36.4 gr | 80% | 37,521 psi | 61% | 2700 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,440 psi | 73% | 2822 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,469 psi | 73% | 2867 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,702 psi | 45% | 2431 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,317 psi | 57% | 2657 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,982 psi | 55% | 2671 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,270 psi | 81% | 2858 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,149 psi | 70% | 2726 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,469 psi | 73% | 2867 fps | 95.4% |
| Bofors RP7 | <<locked>> | 84% | 43,555 psi | 70% | 2700 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,301 psi | 84% | 2874 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,787 psi | 71% | 2736 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 40,988 psi | 66% | 2726 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 44,483 psi | 72% | 2756 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 50,995 psi | 82% | 2854 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,951 psi | 50% | 2474 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,601 psi | 77% | 2835 fps | 100% |
| Hodgdon Superformance | 41.4 gr | 86% | 43,265 psi | 70% | 2805 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 43% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,849 psi | 79% | 2805 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,605 psi | 83% | 2841 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,136 psi | 73% | 2726 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,601 psi | 77% | 2753 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 41,249 psi | 67% | 2674 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,755 psi | 64% | 2621 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 32,663 psi | 53% | 2520 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 47,210 psi | 76% | 2815 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 52,533 psi | 85% | 2844 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,546 psi | 82% | 2822 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,937 psi | 81% | 2776 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,353 psi | 73% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,405 psi | 60% | 2572 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 40,422 psi | 65% | 2661 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 35,505 psi | 57% | 2589 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,588 psi | 80% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,140 psi | 81% | 2795 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,411 psi | 73% | 2772 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,702 psi | 75% | 2822 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 41,930 psi | 68% | 2825 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,721 psi | 54% | 2559 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,527 psi | 73% | 2792 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 37,405 psi | 60% | 2654 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,518 psi | 85% | 2881 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 44% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,801 psi | 71% | 2713 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,574 psi | 80% | 2904 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,900 psi | 64% | 2766 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,475 psi | 54% | 2579 fps | 95.8% |
| ReloadSwiss RS 70 | 37.9 gr | 82% | 35,288 psi | 57% | 2641 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 47,166 psi | 76% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,466 psi | 65% | 2667 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 50,966 psi | 82% | 2864 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 44,338 psi | 72% | 2802 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 84% | 43,555 psi | 70% | 2700 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,405 psi | 60% | 2572 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,546 psi | 82% | 2822 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,353 psi | 73% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,422 psi | 65% | 2661 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,771 psi | 67% | 2723 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,488 psi | 83% | 2848 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,168 psi | 79% | 2818 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,328 psi | 81% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,293 psi | 68% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,044 psi | 63% | 2569 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,065 psi | 76% | 2854 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,256 psi | 81% | 2730 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,126 psi | 82% | 2835 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,249 psi | 67% | 2674 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,327 psi | 49% | 2513 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 42,308 psi | 68% | 2730 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 50,778 psi | 82% | 2713 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,920 psi | 76% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,224 psi | 76% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,117 psi | 63% | 2602 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,143 psi | 57% | 2562 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 44,121 psi | 71% | 2753 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 45,818 psi | 74% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,780 psi | 56% | 2566 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 29,979 psi | 48% | 2507 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,708 psi | 56% | 2539 fps | 98.6% |
| Winchester 760 | <<locked>> | 84% | 40,988 psi | 66% | 2726 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,688 psi | 45% | 2513 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,834 psi | 79% | 2818 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,964 psi | 77% | 2828 fps | 95.8% |
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 | 103gr | Hornady ELD-X. Alliant Reloder-26 delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,068 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 58–90 %, leaving at least 10 % headroom. The 103.0 gr projectile in 0.243" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, Alliant Reloder-22 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-17, Hodgdon Superformance rank at the top here: for 6 mm Creedmoor with the .243 | 103gr | Hornady ELD-X 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.