Load Specifications
Load data in caliber 6.5 Creedmoor with .264 | 104gr | Peregrine VLR5 (VLR-5) bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 54,694 psi | 87% | 2953 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 55,158 psi | 87% | 3051 fps | 98.5% |
| Accurate 2230 | <<locked>> | 82% | 56,304 psi | 89% | 3064 fps | 98.9% |
| Accurate 2460 | <<locked>> | 88% | 56,942 psi | 90% | 3028 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 55,274 psi | 88% | 3009 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 54,955 psi | 87% | 3035 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 54,781 psi | 87% | 3048 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,874 psi | 70% | 2923 fps | 96% |
| Accurate LT-30 | <<locked>> | 84% | 55,100 psi | 87% | 2904 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,535 psi | 88% | 2930 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 54,157 psi | 86% | 3041 fps | 99% |
| ADI AR 2207 | <<locked>> | 82% | 56,565 psi | 90% | 2927 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 55,042 psi | 87% | 3031 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 84% | 55,593 psi | 88% | 3028 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 57,087 psi | 90% | 3051 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 56,637 psi | 90% | 3035 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 54,781 psi | 87% | 3107 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,432 psi | 85% | 3143 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 53,867 psi | 85% | 3048 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,723 psi | 87% | 2966 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 55,158 psi | 87% | 3074 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,454 psi | 70% | 2936 fps | 96.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,430 psi | 82% | 3107 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 54,346 psi | 86% | 2897 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,027 psi | 86% | 3051 fps | 98.2% |
| Bofors RP3 | <<locked>> | 98% | 54,433 psi | 86% | 3064 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 55,622 psi | 88% | 2986 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 55,622 psi | 88% | 3077 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,070 psi | 86% | 3120 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 86% | 53,925 psi | 85% | 3002 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 55,274 psi | 88% | 3028 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 56,057 psi | 89% | 3074 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 92% | 54,665 psi | 87% | 3054 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,437 psi | 64% | 2815 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 56,884 psi | 90% | 3133 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,403 psi | 55% | 1844 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 56,217 psi | 89% | 3058 fps | 99.5% |
| IMR 3031 | <<locked>> | 92% | 53,417 psi | 85% | 3041 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 54,650 psi | 87% | 3018 fps | 98.8% |
| IMR 4198 | <<locked>> | 86% | 55,463 psi | 88% | 2930 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 56,507 psi | 90% | 3110 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 92% | 57,087 psi | 90% | 3051 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 56,898 psi | 90% | 3041 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 53,403 psi | 85% | 2982 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 94% | 56,376 psi | 89% | 3068 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 54,491 psi | 86% | 2972 fps | 99.1% |
| Lovex S062 | <<locked>> | 96% | 53,824 psi | 85% | 3015 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,690 psi | 79% | 2936 fps | 95.8% |
| Norma 200 | <<locked>> | 82% | 54,360 psi | 86% | 2933 fps | 100% |
| Norma 201 | <<locked>> | 94% | 55,782 psi | 88% | 3031 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 56,681 psi | 90% | 3048 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,186 psi | 86% | 3061 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 44,179 psi | 70% | 2920 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 96% | 54,955 psi | 87% | 3091 fps | 99.1% |
| Ramshot TAC | <<locked>> | 90% | 54,041 psi | 86% | 3002 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 92% | 56,971 psi | 90% | 3087 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,969 psi | 87% | 2999 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,345 psi | 54% | 1880 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 56,782 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 57,029 psi | 90% | 3054 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 54,781 psi | 87% | 3140 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 55,027 psi | 87% | 3179 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 56,739 psi | 90% | 3025 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 56,275 psi | 89% | 3031 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 53,867 psi | 85% | 3048 fps | 99.4% |
| Shooters World AR Plus | <<locked>> | 82% | 56,898 psi | 90% | 3041 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,690 psi | 79% | 2936 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 94% | 56,376 psi | 89% | 3068 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 53,824 psi | 85% | 3015 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 56,942 psi | 90% | 3009 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,521 psi | 88% | 2654 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 55,970 psi | 89% | 3035 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 56,434 psi | 89% | 3120 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,985 psi | 89% | 2992 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 55,506 psi | 88% | 3031 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,898 psi | 89% | 3058 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,940 psi | 87% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 54,404 psi | 86% | 2927 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 54,592 psi | 87% | 3031 fps | 99.8% |
| Somchem S335 | <<locked>> | 92% | 53,853 psi | 85% | 2933 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 55,288 psi | 88% | 3031 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 54,911 psi | 87% | 3054 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,392 psi | 62% | 2864 fps | 98% |
| Vihtavuori N120 | <<locked>> | 82% | 56,376 psi | 89% | 2871 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,853 psi | 87% | 2910 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 54,882 psi | 87% | 2923 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 55,187 psi | 87% | 3002 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 57,014 psi | 90% | 3022 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,881 psi | 84% | 2982 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,833 psi | 74% | 2930 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 90% | 53,896 psi | 85% | 2995 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 96% | 55,405 psi | 88% | 3018 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,687 psi | 72% | 2927 fps | 96% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,457 psi | 77% | 2923 fps | 98.7% |
| Winchester 748 | <<locked>> | 92% | 56,826 psi | 90% | 3100 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 55,680 psi | 88% | 3071 fps | 99.5% |
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% | 39,755 psi | 63% | 2703 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,459 psi | 82% | 2989 fps | 97.9% |
| Accurate 2230 | <<locked>> | 80% | 52,040 psi | 82% | 2995 fps | 98.4% |
| Accurate 2460 | <<locked>> | 80% | 43,221 psi | 69% | 2802 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 32,010 psi | 51% | 2589 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 38,638 psi | 61% | 2746 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 30,269 psi | 48% | 2562 fps | 97.5% |
| Accurate 4350 | <<locked>> | 98% | 40,611 psi | 64% | 2858 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 48,515 psi | 77% | 2802 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,878 psi | 77% | 2825 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 36,622 psi | 58% | 2694 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 53,127 psi | 84% | 2877 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 40,190 psi | 64% | 2753 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 48,341 psi | 77% | 2913 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,667 psi | 61% | 2717 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 37,434 psi | 59% | 2733 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,657 psi | 71% | 2923 fps | 98% |
| Alliant Power Pro 2000-MR | 39.3 gr | 86% | 40,654 psi | 64% | 2877 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 34,229 psi | 54% | 2657 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,440 psi | 72% | 2822 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 39,784 psi | 63% | 2789 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,553 psi | 66% | 2874 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,535 psi | 58% | 2785 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,529 psi | 75% | 2795 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,017 psi | 65% | 2808 fps | 95.2% |
| Bofors RP3 | <<locked>> | 84% | 33,460 psi | 53% | 2651 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,857 psi | 65% | 2723 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,796 psi | 58% | 2726 fps | 97.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,393 psi | 64% | 2858 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 44,309 psi | 70% | 2844 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,092 psi | 71% | 2864 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 45,818 psi | 73% | 2897 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 36,840 psi | 58% | 2707 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,433 psi | 56% | 2697 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,172 psi | 56% | 2717 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,411 psi | 40% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,636 psi | 56% | 2661 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 35,795 psi | 57% | 2723 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 39,682 psi | 63% | 2736 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 46,383 psi | 74% | 2792 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 38,014 psi | 60% | 2759 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 38,667 psi | 61% | 2717 fps | 97.2% |
| Lovex D073.4 | <<locked>> | 80% | 53,040 psi | 84% | 2986 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 43,091 psi | 68% | 2805 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 80% | 34,853 psi | 55% | 2671 fps | 97.8% |
| Lovex S060 | <<locked>> | 80% | 37,652 psi | 60% | 2648 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 32,242 psi | 51% | 2575 fps | 95.2% |
| Lovex S065 | <<locked>> | 98% | 46,456 psi | 74% | 2877 fps | 95% |
| Norma 200 | <<locked>> | 80% | 51,198 psi | 81% | 2887 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,882 psi | 57% | 2654 fps | 96.5% |
| Norma 202 | <<locked>> | 80% | 36,027 psi | 57% | 2674 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 36,463 psi | 58% | 2713 fps | 95.1% |
| Norma URP | <<locked>> | 98% | 41,539 psi | 66% | 2867 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 86% | 38,841 psi | 62% | 2785 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 47,427 psi | 75% | 2884 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,782 psi | 60% | 2726 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,003 psi | 67% | 2766 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,483 psi | 40% | 1686 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,627 psi | 69% | 2818 fps | 99.3% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,301 psi | 84% | 2995 fps | 95.8% |
| ReloadSwiss RS 52 | 37.2 gr | 84% | 38,609 psi | 61% | 2828 fps | 95.1% |
| ReloadSwiss RS 60 | 37.8 gr | 84% | 31,923 psi | 51% | 2671 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 39,276 psi | 62% | 2713 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 34,011 psi | 54% | 2598 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 86% | 33,620 psi | 53% | 2648 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 53,040 psi | 84% | 2986 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 46,456 psi | 74% | 2877 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,853 psi | 55% | 2671 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 32,242 psi | 51% | 2575 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,354 psi | 73% | 2835 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,707 psi | 84% | 2618 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,008 psi | 78% | 2927 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,811 psi | 60% | 2766 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,021 psi | 73% | 2835 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 45,121 psi | 72% | 2851 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,681 psi | 60% | 2713 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,478 psi | 59% | 2628 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,618 psi | 49% | 2480 fps | 98.2% |
| Somchem S321 | <<locked>> | 80% | 41,408 psi | 66% | 2795 fps | 98.2% |
| Somchem S335 | <<locked>> | 80% | 37,130 psi | 59% | 2635 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 38,725 psi | 61% | 2730 fps | 95.7% |
| Somchem S355 | <<locked>> | 86% | 34,896 psi | 55% | 2664 fps | 95.2% |
| Somchem S365 | <<locked>> | 94% | 32,256 psi | 51% | 2680 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 53,055 psi | 84% | 2825 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,656 psi | 68% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,623 psi | 60% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,677 psi | 52% | 2598 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 33,823 psi | 54% | 2602 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 30,937 psi | 49% | 2543 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 98% | 43,671 psi | 69% | 2867 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 38,580 psi | 61% | 2710 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 80% | 32,677 psi | 52% | 2585 fps | 97.7% |
| Vihtavuori N550 | <<locked>> | 98% | 42,656 psi | 68% | 2867 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,883 psi | 58% | 2684 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 37,405 psi | 59% | 2746 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,403 psi | 55% | 2657 fps | 95% |
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 96 powders for 6.5 Creedmoor loaded with the .264 | 104gr | Peregrine VLR5 (VLR-5). ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,179 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 104.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for 6.5 Creedmoor with the .264 | 104gr | Peregrine VLR5 (VLR-5) 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.