Load Specifications
Load data in caliber 6 mm Creedmoor with .243 | 89gr | Apex Outdoors Afterburner 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 60, Alliant Reloder-17 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.
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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 2015 | <<locked>> | 82% | 52,968 psi | 85% | 2959 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,724 psi | 90% | 3038 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,534 psi | 86% | 3051 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,433 psi | 88% | 3022 fps | 96.2% |
| Accurate 4064 | <<locked>> | 90% | 55,463 psi | 89% | 3084 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,332 psi | 89% | 3163 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 55,579 psi | 90% | 3114 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 53,301 psi | 86% | 3058 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,331 psi | 88% | 3061 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,100 psi | 89% | 3038 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,172 psi | 89% | 3235 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 52,765 psi | 85% | 3068 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,417 psi | 86% | 3084 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 53,635 psi | 87% | 3100 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 3219 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,027 psi | 87% | 3209 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,480 psi | 65% | 2933 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,600 psi | 74% | 3107 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,376 psi | 89% | 3123 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 53,940 psi | 87% | 3097 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,143 psi | 87% | 3061 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 52,634 psi | 85% | 2989 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,099 psi | 87% | 3094 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,550 psi | 90% | 3192 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 90% | 54,723 psi | 88% | 3107 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 96% | 54,215 psi | 87% | 3153 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 94% | 54,694 psi | 88% | 3114 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 84% | 52,605 psi | 85% | 3068 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,620 psi | 85% | 3091 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,492 psi | 90% | 3156 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,926 psi | 89% | 3186 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,607 psi | 57% | 1926 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,911 psi | 87% | 3071 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 55,883 psi | 90% | 3107 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,547 psi | 85% | 3038 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,898 psi | 90% | 3068 fps | 97.3% |
| IMR 4350 | <<locked>> | 98% | 54,201 psi | 87% | 3084 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,579 psi | 90% | 3091 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,796 psi | 90% | 3156 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 55,013 psi | 89% | 3136 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 54,331 psi | 88% | 3061 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,521 psi | 90% | 3091 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,955 psi | 89% | 3035 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 55,811 psi | 90% | 3091 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,463 psi | 89% | 3091 fps | 98.4% |
| Lovex S070 | <<locked>> | 96% | 52,866 psi | 85% | 3064 fps | 97% |
| Norma 201 | <<locked>> | 86% | 54,520 psi | 88% | 3061 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,955 psi | 89% | 3061 fps | 100% |
| Norma 203B | <<locked>> | 88% | 52,852 psi | 85% | 3084 fps | 99.7% |
| Norma URP | <<locked>> | 98% | 54,331 psi | 88% | 3153 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 88% | 53,461 psi | 86% | 3114 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 98% | 53,055 psi | 86% | 3140 fps | 97.8% |
| Ramshot TAC | <<locked>> | 84% | 54,563 psi | 88% | 3071 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,447 psi | 88% | 3097 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,158 psi | 89% | 3058 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,201 psi | 58% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,824 psi | 88% | 3081 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,157 psi | 87% | 3173 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,766 psi | 87% | 3209 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,839 psi | 88% | 3182 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,230 psi | 87% | 3205 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 84% | 55,434 psi | 89% | 3041 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,013 psi | 89% | 3058 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 53,780 psi | 87% | 3087 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 54,143 psi | 87% | 3061 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,463 psi | 89% | 3091 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,521 psi | 90% | 3091 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,811 psi | 90% | 3091 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 52,866 psi | 85% | 3064 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,245 psi | 89% | 3150 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,098 psi | 86% | 3048 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,012 psi | 87% | 3081 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,738 psi | 90% | 2995 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,898 psi | 90% | 2989 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,376 psi | 89% | 3031 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 55,608 psi | 90% | 3094 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,274 psi | 89% | 2992 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 52,939 psi | 85% | 3045 fps | 99.6% |
| Somchem S355 | <<locked>> | 92% | 54,128 psi | 87% | 3087 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,040 psi | 84% | 3150 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 55,477 psi | 89% | 2959 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,941 psi | 90% | 2979 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,650 psi | 88% | 3022 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,230 psi | 89% | 3035 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,608 psi | 90% | 3068 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 53,272 psi | 86% | 3091 fps | 99% |
| Vihtavuori N530 | <<locked>> | 84% | 54,839 psi | 88% | 3061 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,374 psi | 86% | 3025 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,709 psi | 90% | 3150 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,483 psi | 72% | 3018 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,461 psi | 86% | 3064 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,853 psi | 88% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,621 psi | 88% | 3159 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,651 psi | 59% | 2933 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,925 psi | 87% | 3087 fps | 99.9% |
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% | 49,908 psi | 80% | 2913 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,308 psi | 70% | 2838 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,024 psi | 81% | 2995 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,952 psi | 82% | 2963 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,915 psi | 66% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 36,869 psi | 59% | 2802 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 46,050 psi | 74% | 2943 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 39,131 psi | 63% | 2776 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,993 psi | 77% | 2949 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 48,530 psi | 78% | 2943 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,829 psi | 67% | 2966 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,601 psi | 75% | 2956 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,146 psi | 63% | 2805 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,756 psi | 67% | 2871 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,477 psi | 59% | 2805 fps | 95.3% |
| Alliant Reloder-17 | 35.9 gr | 80% | 33,808 psi | 55% | 2759 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,865 psi | 51% | 2700 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,508 psi | 64% | 2963 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,237 psi | 73% | 2940 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 38,914 psi | 63% | 2812 fps | 98.4% |
| Bofors RP7 | <<locked>> | 92% | 50,691 psi | 82% | 2999 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,705 psi | 80% | 2940 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,079 psi | 76% | 2972 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,967 psi | 84% | 3130 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 80% | 39,697 psi | 64% | 2812 fps | 95.7% |
| Hodgdon H414 | 40.4 gr | 92% | 47,747 psi | 77% | 3035 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 92% | 51,663 psi | 83% | 3058 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 46,456 psi | 75% | 2953 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 31,546 psi | 51% | 2638 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,366 psi | 68% | 2917 fps | 99% |
| Hodgdon Superformance | <<locked>> | 92% | 47,645 psi | 77% | 3048 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 43% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,498 psi | 72% | 2900 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 46,383 psi | 75% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,104 psi | 66% | 2815 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,354 psi | 75% | 2890 fps | 95.2% |
| IMR 4350 | <<locked>> | 94% | 47,877 psi | 77% | 2969 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,456 psi | 75% | 2923 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 35,360 psi | 57% | 2749 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 42,786 psi | 69% | 2904 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 47,993 psi | 77% | 2949 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 45,701 psi | 74% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,905 psi | 74% | 2874 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 41,307 psi | 67% | 2825 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 40,930 psi | 66% | 2812 fps | 95.2% |
| Lovex S070 | <<locked>> | 92% | 46,673 psi | 75% | 2949 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 45,382 psi | 73% | 2897 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 45,629 psi | 74% | 2904 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,133 psi | 66% | 2858 fps | 98% |
| Norma URP | <<locked>> | 86% | 36,854 psi | 59% | 2799 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 40,582 psi | 65% | 2864 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 43,511 psi | 70% | 2953 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 48,095 psi | 78% | 2953 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,761 psi | 77% | 2979 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,735 psi | 83% | 3002 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 44% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,469 psi | 73% | 2910 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,903 psi | 71% | 2979 fps | 98.1% |
| ReloadSwiss RS 60 | 35.9 gr | 80% | 35,911 psi | 58% | 2838 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 38,870 psi | 63% | 2871 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,553 psi | 67% | 2946 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 49,342 psi | 80% | 2943 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,207 psi | 70% | 2844 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 36,506 psi | 59% | 2746 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 50,691 psi | 82% | 2999 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,930 psi | 66% | 2812 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,701 psi | 74% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,307 psi | 67% | 2825 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 46,673 psi | 75% | 2949 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,275 psi | 60% | 2795 fps | 96.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,557 psi | 75% | 2930 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,440 psi | 72% | 2904 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,180 psi | 74% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,566 psi | 62% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,934 psi | 74% | 2864 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 52,083 psi | 84% | 3035 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,209 psi | 75% | 2848 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,079 psi | 74% | 2923 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 37,405 psi | 60% | 2756 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 29,182 psi | 47% | 2628 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 51,953 psi | 84% | 2907 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,441 psi | 75% | 2835 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,380 psi | 68% | 2822 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,960 psi | 69% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,389 psi | 57% | 2684 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 38,435 psi | 62% | 2799 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 48,283 psi | 78% | 2949 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 41,742 psi | 67% | 2822 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 37,971 psi | 61% | 2802 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 34,461 psi | 56% | 2789 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,459 psi | 51% | 2595 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 47,979 psi | 77% | 2995 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 47,747 psi | 77% | 3035 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 32,184 psi | 52% | 2789 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,179 psi | 71% | 2913 fps | 99% |
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 113 powders for 6 mm Creedmoor loaded with the .243 | 89gr | Apex Outdoors Afterburner. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,235 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,235 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 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 89.0 gr projectile in 0.243" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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, Alliant Reloder-17, Hodgdon H414 rank at the top here: for 6 mm Creedmoor with the .243 | 89gr | Apex Outdoors Afterburner they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate High Country, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.