Load Specifications
Load data in caliber 6 mm Creedmoor with .243 | 90gr | Lapua ScenarL 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, ReloadSwiss RS 60 and Alliant Reloder-17.
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% | 53,635 psi | 87% | 2969 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 52,591 psi | 85% | 2992 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,998 psi | 87% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,100 psi | 89% | 3038 fps | 96.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,468 psi | 70% | 2920 fps | 96% |
| Accurate 4064 | <<locked>> | 88% | 52,939 psi | 85% | 3041 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,533 psi | 85% | 3120 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 84% | 52,663 psi | 85% | 3064 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 53,853 psi | 87% | 3068 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,955 psi | 89% | 3071 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,028 psi | 90% | 3045 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,460 psi | 85% | 3189 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,954 psi | 87% | 3091 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,534 psi | 88% | 3114 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 53,867 psi | 87% | 3182 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,187 psi | 89% | 3222 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,147 psi | 66% | 2949 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,557 psi | 75% | 3130 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,779 psi | 85% | 3081 fps | 99.3% |
| Bofors RP3 | <<locked>> | 90% | 54,694 psi | 88% | 3110 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,810 psi | 88% | 3077 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,345 psi | 86% | 3002 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,911 psi | 89% | 3104 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,419 psi | 89% | 3120 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 96% | 55,347 psi | 89% | 3173 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 94% | 55,912 psi | 90% | 3136 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 53,214 psi | 86% | 3077 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,417 psi | 86% | 3104 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,866 psi | 85% | 3110 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,112 psi | 84% | 3140 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,534 psi | 57% | 1929 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,505 psi | 88% | 3084 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,403 psi | 86% | 3068 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,534 psi | 86% | 3054 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,200 psi | 86% | 3025 fps | 97.1% |
| IMR 4350 | <<locked>> | 98% | 55,259 psi | 89% | 3104 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,287 psi | 86% | 3054 fps | 97.1% |
| IMR 4831 | <<locked>> | 98% | 53,156 psi | 86% | 3110 fps | 99.3% |
| IMR 4895 | <<locked>> | 88% | 55,941 psi | 90% | 3150 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 54,955 psi | 89% | 3071 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,765 psi | 85% | 3045 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,579 psi | 90% | 3045 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 53,505 psi | 86% | 3054 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,072 psi | 90% | 3100 fps | 98.7% |
| Lovex S070 | <<locked>> | 96% | 53,838 psi | 87% | 3084 fps | 97.5% |
| Norma 201 | <<locked>> | 86% | 54,998 psi | 89% | 3068 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,521 psi | 90% | 3068 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,780 psi | 87% | 3100 fps | 99.8% |
| Norma 204 | <<locked>> | 98% | 55,883 psi | 90% | 3153 fps | 95.8% |
| Norma URP | <<locked>> | 98% | 55,100 psi | 89% | 3163 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 88% | 54,273 psi | 88% | 3123 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 98% | 54,027 psi | 87% | 3156 fps | 98.2% |
| Ramshot TAC | <<locked>> | 84% | 55,332 psi | 89% | 3084 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,303 psi | 89% | 3110 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,999 psi | 90% | 3071 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,085 psi | 58% | 1975 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,941 psi | 90% | 3104 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,274 psi | 89% | 3189 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,563 psi | 88% | 3219 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,228 psi | 84% | 3136 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,521 psi | 90% | 3228 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 55,898 psi | 90% | 3048 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,477 psi | 89% | 3064 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,563 psi | 88% | 3100 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,810 psi | 88% | 3077 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,072 psi | 90% | 3100 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,765 psi | 85% | 3045 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,505 psi | 86% | 3054 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,838 psi | 87% | 3084 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,910 psi | 85% | 3107 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,853 psi | 87% | 3061 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,868 psi | 88% | 3094 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,808 psi | 85% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,214 psi | 86% | 2949 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,678 psi | 85% | 2989 fps | 97% |
| Somchem S335 | <<locked>> | 86% | 55,753 psi | 90% | 2999 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,751 psi | 87% | 3058 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 54,926 psi | 89% | 3097 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,214 psi | 86% | 3166 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,705 psi | 80% | 3035 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 82% | 55,898 psi | 90% | 2963 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 53,142 psi | 86% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,347 psi | 89% | 3028 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,663 psi | 85% | 2992 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,765 psi | 85% | 3022 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,041 psi | 87% | 3104 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 55,448 psi | 89% | 3068 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,172 psi | 87% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,084 psi | 86% | 3107 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,440 psi | 73% | 3035 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,259 psi | 88% | 3077 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,912 psi | 90% | 3123 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,753 psi | 90% | 3179 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,970 psi | 60% | 2953 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,766 psi | 88% | 3100 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% | 50,575 psi | 82% | 2923 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,149 psi | 70% | 2835 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,502 psi | 81% | 2999 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,414 psi | 78% | 2920 fps | 95.2% |
| Accurate 3100 | <<locked>> | 98% | 40,466 psi | 65% | 2858 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 40,785 psi | 66% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 37,057 psi | 60% | 2805 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 46,586 psi | 75% | 2953 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 39,682 psi | 64% | 2789 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,631 psi | 78% | 2959 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,095 psi | 79% | 2946 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,598 psi | 69% | 2986 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,320 psi | 63% | 2812 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,221 psi | 68% | 2881 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,679 psi | 56% | 2759 fps | 95% |
| Alliant Reloder-17 | 36.9 gr | 80% | 34,040 psi | 55% | 2772 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 32,082 psi | 52% | 2713 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,318 psi | 60% | 2910 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,050 psi | 74% | 2956 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 39,262 psi | 63% | 2818 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 48,457 psi | 78% | 2959 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,372 psi | 81% | 2953 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,848 psi | 77% | 2986 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,016 psi | 65% | 2822 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 90% | 45,281 psi | 73% | 2986 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 92% | 52,417 psi | 85% | 3071 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,021 psi | 76% | 2966 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 31,763 psi | 51% | 2648 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,250 psi | 70% | 2933 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 92% | 48,762 psi | 79% | 3074 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 43% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,121 psi | 73% | 2913 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 46,833 psi | 76% | 2959 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,684 psi | 67% | 2828 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,804 psi | 75% | 2904 fps | 95.7% |
| IMR 4350 | <<locked>> | 94% | 48,573 psi | 78% | 2986 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,891 psi | 76% | 2933 fps | 95.6% |
| IMR 4831 | <<locked>> | 86% | 35,882 psi | 58% | 2759 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 43,279 psi | 70% | 2913 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 48,631 psi | 78% | 2959 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 46,137 psi | 74% | 2933 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,224 psi | 75% | 2881 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 41,423 psi | 67% | 2828 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 41,162 psi | 66% | 2818 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 44,628 psi | 72% | 2913 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,498 psi | 73% | 2900 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 45,890 psi | 74% | 2910 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,626 psi | 67% | 2871 fps | 98.4% |
| Norma 204 | <<locked>> | 96% | 52,185 psi | 84% | 3091 fps | 95% |
| Norma URP | <<locked>> | 86% | 37,188 psi | 60% | 2808 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 41,365 psi | 67% | 2884 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 41,582 psi | 67% | 2913 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 48,457 psi | 78% | 2963 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,269 psi | 78% | 2989 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,591 psi | 85% | 3015 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,919 psi | 43% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,946 psi | 69% | 2861 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,614 psi | 72% | 2992 fps | 98.4% |
| ReloadSwiss RS 60 | 36.9 gr | 80% | 36,201 psi | 58% | 2844 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,753 psi | 59% | 2822 fps | 95.3% |
| ReloadSwiss RS 70 | 41.2 gr | 88% | 39,305 psi | 63% | 2894 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 49,443 psi | 80% | 2946 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,265 psi | 70% | 2848 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 36,782 psi | 59% | 2753 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 48,457 psi | 78% | 2959 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,162 psi | 66% | 2818 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,137 psi | 74% | 2933 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,423 psi | 67% | 2828 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 44,628 psi | 72% | 2913 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,666 psi | 61% | 2805 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,876 psi | 76% | 2936 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,933 psi | 72% | 2913 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,847 psi | 76% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,131 psi | 63% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 46,470 psi | 75% | 2881 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 46,383 psi | 75% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,862 psi | 76% | 2940 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 37,492 psi | 60% | 2759 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 27,383 psi | 44% | 2569 fps | 95.2% |
| Somchem S385 | <<locked>> | 98% | 46,485 psi | 75% | 2976 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 52,750 psi | 85% | 2917 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,224 psi | 76% | 2844 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,033 psi | 69% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,497 psi | 70% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,752 psi | 58% | 2694 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 36,230 psi | 58% | 2749 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 48,907 psi | 79% | 2959 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 42,163 psi | 68% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 38,203 psi | 62% | 2808 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 92% | 34,882 psi | 56% | 2799 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,763 psi | 51% | 2608 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 48,588 psi | 78% | 3002 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,629 psi | 74% | 2992 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,429 psi | 49% | 2733 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,657 psi | 72% | 2923 fps | 99.3% |
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 | 90gr | Lapua ScenarL. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,228 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,228 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 57–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.243" calls for a 1:9.0 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 6 mm Creedmoor with the .243 | 90gr | Lapua ScenarL 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.