Load Specifications
Load data in caliber 6 mm Creedmoor with .243 | 100gr | Hornady SP bullet and 95 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 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.
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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% | 54,897 psi | 89% | 2877 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,779 psi | 85% | 2881 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,588 psi | 80% | 2910 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 54,853 psi | 88% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,593 psi | 90% | 3028 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,969 psi | 87% | 3107 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 82% | 54,404 psi | 88% | 2959 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,434 psi | 89% | 2959 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,011 psi | 86% | 3005 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,244 psi | 87% | 3077 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,156 psi | 86% | 3005 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,898 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,982 psi | 85% | 2953 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,014 psi | 90% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,635 psi | 87% | 3058 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,883 psi | 90% | 3054 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,110 psi | 79% | 2982 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,528 psi | 75% | 2933 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,654 psi | 66% | 2831 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,026 psi | 86% | 3123 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,273 psi | 88% | 2972 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 53,330 psi | 86% | 2946 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,110 psi | 79% | 2982 fps | 96.3% |
| Bofors RP7 | <<locked>> | 90% | 52,924 psi | 85% | 2920 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 86% | 53,751 psi | 87% | 2959 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 54,012 psi | 87% | 3022 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 54,273 psi | 88% | 2982 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 54,969 psi | 89% | 2966 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,026 psi | 86% | 2956 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,114 psi | 89% | 3005 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,549 psi | 88% | 3061 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 58% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,707 psi | 85% | 2917 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,216 psi | 89% | 2943 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,795 psi | 88% | 2940 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,172 psi | 87% | 2920 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 53,563 psi | 86% | 2953 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,723 psi | 88% | 2953 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 55,927 psi | 90% | 3018 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,375 psi | 88% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,549 psi | 88% | 2930 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,447 psi | 86% | 2881 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,940 psi | 89% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,665 psi | 88% | 2953 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 55,680 psi | 90% | 2989 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,959 psi | 66% | 2749 fps | 96.7% |
| Norma 201 | <<locked>> | 82% | 53,156 psi | 86% | 2900 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,795 psi | 87% | 2900 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,724 psi | 90% | 2992 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,172 psi | 87% | 3002 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 52,257 psi | 84% | 3074 fps | 98.3% |
| Norma URP | <<locked>> | 94% | 54,201 psi | 87% | 3012 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 52,605 psi | 85% | 2959 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 52,852 psi | 85% | 3005 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 59% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,766 psi | 87% | 2940 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,606 psi | 86% | 3018 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,359 psi | 86% | 3054 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,347 psi | 89% | 3051 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,983 psi | 87% | 3077 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 53,664 psi | 87% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,156 psi | 86% | 2940 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,694 psi | 88% | 2976 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,781 psi | 88% | 3035 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 52,924 psi | 85% | 2920 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,665 psi | 88% | 2953 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,549 psi | 88% | 2930 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,940 psi | 89% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,680 psi | 90% | 2989 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,085 psi | 89% | 3005 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,680 psi | 90% | 2963 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,866 psi | 85% | 2927 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,143 psi | 87% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,708 psi | 88% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,621 psi | 88% | 2904 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,288 psi | 88% | 3028 fps | 97.3% |
| Somchem S335 | <<locked>> | 82% | 53,838 psi | 87% | 2831 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,230 psi | 89% | 2946 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,417 psi | 86% | 2936 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 52,924 psi | 85% | 3015 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 3009 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 54,621 psi | 88% | 2818 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,722 psi | 87% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,389 psi | 88% | 2877 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,607 psi | 88% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,069 psi | 86% | 2956 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,080 psi | 78% | 2871 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 86% | 55,912 psi | 90% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,680 psi | 90% | 3012 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,025 psi | 84% | 3015 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,620 psi | 85% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,433 psi | 88% | 3025 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,814 psi | 67% | 2969 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,866 psi | 85% | 2933 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,243 psi | 84% | 2946 fps | 96.7% |
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% | 48,051 psi | 78% | 2779 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,180 psi | 74% | 2759 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 37,666 psi | 61% | 2677 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 45,498 psi | 73% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,214 psi | 55% | 2615 fps | 96.3% |
| Accurate High Country | <<locked>> | 98% | 50,386 psi | 81% | 3041 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 51,068 psi | 82% | 2904 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,221 psi | 70% | 2743 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 46,485 psi | 75% | 2884 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,195 psi | 76% | 2956 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,673 psi | 75% | 2887 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,526 psi | 70% | 2772 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,601 psi | 75% | 2841 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,692 psi | 54% | 2621 fps | 96.3% |
| Alliant Reloder-17 | 37.6 gr | 80% | 37,927 psi | 61% | 2753 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,108 psi | 74% | 2877 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,006 psi | 74% | 2923 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,036 psi | 45% | 2480 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,795 psi | 58% | 2710 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,301 psi | 55% | 2717 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,618 psi | 82% | 2913 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,729 psi | 71% | 2782 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 46,006 psi | 74% | 2923 fps | 95.4% |
| Bofors RP7 | <<locked>> | 82% | 41,249 psi | 67% | 2697 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 44,280 psi | 71% | 2789 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 41,626 psi | 67% | 2785 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 44,817 psi | 72% | 2805 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,590 psi | 83% | 2913 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,241 psi | 50% | 2520 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,051 psi | 78% | 2890 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,814 psi | 66% | 2795 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 43% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,429 psi | 80% | 2861 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,040 psi | 84% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,440 psi | 73% | 2779 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,790 psi | 77% | 2805 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 41,872 psi | 68% | 2733 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,277 psi | 65% | 2677 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 32,924 psi | 53% | 2566 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 47,805 psi | 77% | 2871 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 51,097 psi | 82% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,212 psi | 81% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,672 psi | 74% | 2782 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,666 psi | 61% | 2621 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 40,828 psi | 66% | 2713 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 35,969 psi | 58% | 2638 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,864 psi | 80% | 2848 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,459 psi | 81% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,977 psi | 74% | 2828 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 47,442 psi | 77% | 2881 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 42,438 psi | 68% | 2881 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 34,258 psi | 55% | 2612 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,890 psi | 74% | 2844 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,956 psi | 61% | 2713 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 44% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,208 psi | 71% | 2766 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,125 psi | 81% | 2963 fps | 99.8% |
| ReloadSwiss RS 60 | 37.6 gr | 80% | 40,306 psi | 65% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,866 psi | 55% | 2628 fps | 95.7% |
| ReloadSwiss RS 70 | 39.2 gr | 82% | 35,752 psi | 58% | 2694 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 47,529 psi | 77% | 2799 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,075 psi | 66% | 2723 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 51,663 psi | 83% | 2923 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 44,744 psi | 72% | 2854 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 41,249 psi | 67% | 2697 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,666 psi | 61% | 2621 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,097 psi | 82% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,672 psi | 74% | 2782 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,828 psi | 66% | 2713 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,235 psi | 68% | 2779 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,837 psi | 84% | 2900 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,647 psi | 80% | 2871 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,691 psi | 82% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,685 psi | 69% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,465 psi | 64% | 2621 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,413 psi | 76% | 2907 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,575 psi | 82% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,474 psi | 83% | 2890 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,539 psi | 67% | 2723 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,806 psi | 50% | 2566 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 42,699 psi | 69% | 2782 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 51,184 psi | 83% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,398 psi | 76% | 2766 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,848 psi | 77% | 2779 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,639 psi | 64% | 2654 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,650 psi | 57% | 2615 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 45,005 psi | 73% | 2812 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 46,296 psi | 75% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,215 psi | 57% | 2615 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 30,400 psi | 49% | 2556 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,954 psi | 56% | 2585 fps | 98.5% |
| Winchester 760 | <<locked>> | 84% | 41,626 psi | 67% | 2785 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,181 psi | 45% | 2566 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,211 psi | 79% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,762 psi | 79% | 2887 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 95 powders for 6 mm Creedmoor loaded with the .243 | 100gr | Hornady SP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,123 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 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 100.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 6 mm Creedmoor with the .243 | 100gr | Hornady SP 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.