Load Specifications
Load data in caliber .25 Creedmoor with .257 | 100gr | Rhino Solid Shank 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 Power Pro 2000-MR 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 86% | 55,274 psi | 89% | 2956 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,650 psi | 87% | 2979 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,679 psi | 87% | 2976 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,477 psi | 89% | 3041 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 53,272 psi | 86% | 3018 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,997 psi | 85% | 3084 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 88% | 54,186 psi | 87% | 3048 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 55,390 psi | 89% | 3048 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,635 psi | 87% | 3005 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 53,751 psi | 87% | 2986 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,172 psi | 89% | 3117 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,693 psi | 87% | 3163 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,955 psi | 89% | 3068 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,752 psi | 88% | 2959 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,709 psi | 90% | 3091 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,155 psi | 83% | 3087 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,898 psi | 90% | 3192 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,405 psi | 59% | 2789 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,056 psi | 87% | 3058 fps | 98.9% |
| Bofors RP3 | <<locked>> | 94% | 55,883 psi | 90% | 3091 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,419 psi | 89% | 2989 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,823 psi | 85% | 3031 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,244 psi | 87% | 3127 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 82% | 53,809 psi | 87% | 2999 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,187 psi | 89% | 3028 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,272 psi | 86% | 3038 fps | 98.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 3136 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 54,694 psi | 88% | 3058 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,268 psi | 76% | 2959 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,983 psi | 87% | 3091 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 57% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,707 psi | 85% | 3009 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 54,404 psi | 88% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,737 psi | 88% | 3028 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,056 psi | 89% | 3002 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 54,795 psi | 88% | 2920 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,679 psi | 88% | 3025 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,169 psi | 81% | 3018 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 53,563 psi | 86% | 3068 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 86% | 53,635 psi | 87% | 3005 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 53,417 psi | 86% | 2986 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,737 psi | 87% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,244 psi | 87% | 2976 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 54,476 psi | 88% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,606 psi | 86% | 3012 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,534 psi | 88% | 3048 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 53,156 psi | 86% | 2995 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 53,519 psi | 86% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,868 psi | 88% | 3077 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 52,170 psi | 84% | 3071 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 92% | 55,608 psi | 90% | 3104 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,111 psi | 82% | 3061 fps | 96.8% |
| Ramshot TAC | <<locked>> | 86% | 53,693 psi | 87% | 3012 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,374 psi | 86% | 3035 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,578 psi | 88% | 3002 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,375 psi | 57% | 1916 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,939 psi | 85% | 2986 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,882 psi | 87% | 3018 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,970 psi | 90% | 3159 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,825 psi | 90% | 3199 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,562 psi | 85% | 3104 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,026 psi | 86% | 3133 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 86% | 54,360 psi | 88% | 2986 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,563 psi | 86% | 2992 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 55,332 psi | 89% | 3071 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,606 psi | 86% | 3012 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,737 psi | 87% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,476 psi | 88% | 3028 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,534 psi | 88% | 3048 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,853 psi | 87% | 3084 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,695 psi | 90% | 2986 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,854 psi | 90% | 3045 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,736 psi | 85% | 3015 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,795 psi | 88% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,665 psi | 88% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,317 psi | 88% | 2966 fps | 96.4% |
| Somchem S321 | <<locked>> | 84% | 54,694 psi | 88% | 3038 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,157 psi | 87% | 2936 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,259 psi | 89% | 3038 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 55,927 psi | 90% | 3074 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,485 psi | 75% | 3015 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 54,433 psi | 88% | 2904 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,897 psi | 89% | 2927 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,156 psi | 86% | 2966 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,114 psi | 87% | 2979 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,795 psi | 87% | 2999 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,926 psi | 89% | 3074 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 86% | 54,056 psi | 87% | 3005 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 55,753 psi | 90% | 3022 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,751 psi | 87% | 3074 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,218 psi | 63% | 2871 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,941 psi | 90% | 3058 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 53,461 psi | 86% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,823 psi | 85% | 3084 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,649 psi | 85% | 3028 fps | 99.7% |
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 2015 | <<locked>> | 80% | 46,035 psi | 74% | 2812 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,285 psi | 81% | 2923 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,435 psi | 62% | 2717 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,179 psi | 73% | 2871 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 36,318 psi | 59% | 2700 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 39,871 psi | 64% | 2838 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 42,206 psi | 68% | 2822 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,013 psi | 58% | 2661 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,266 psi | 71% | 2838 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 43,888 psi | 71% | 2835 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,576 psi | 83% | 3054 fps | 99.6% |
| Alliant Power Pro 2000-MR | 37.8 gr | 80% | 38,145 psi | 62% | 2828 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,259 psi | 57% | 2680 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,634 psi | 83% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,000 psi | 61% | 2746 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,594 psi | 61% | 2792 fps | 95% |
| Alliant Reloder-17 | 39.1 gr | 84% | 34,867 psi | 56% | 2749 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 34,156 psi | 55% | 2726 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,292 psi | 67% | 2818 fps | 96.4% |
| Bofors RP3 | <<locked>> | 80% | 34,838 psi | 56% | 2680 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,224 psi | 75% | 2835 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,844 psi | 69% | 2854 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,123 psi | 76% | 2999 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 50,691 psi | 82% | 2949 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,387 psi | 83% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 40,944 psi | 66% | 2802 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 96% | 49,095 psi | 79% | 3015 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,554 psi | 69% | 2835 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,372 psi | 52% | 2625 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,508 psi | 62% | 2795 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,208 psi | 42% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,944 psi | 66% | 2785 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 41,901 psi | 68% | 2841 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,782 psi | 61% | 2700 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,530 psi | 78% | 2887 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 51,619 psi | 83% | 2874 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 51,314 psi | 83% | 2966 fps | 95.6% |
| IMR 4831 | <<locked>> | 92% | 38,595 psi | 62% | 2792 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 38,899 psi | 63% | 2779 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 44,266 psi | 71% | 2838 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 50,053 psi | 81% | 2930 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 41,133 psi | 66% | 2805 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 42,409 psi | 68% | 2759 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 37,405 psi | 60% | 2700 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 44,585 psi | 72% | 2848 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 47,950 psi | 77% | 2933 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 41,278 psi | 67% | 2776 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 41,510 psi | 67% | 2789 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 37,376 psi | 60% | 2736 fps | 96.5% |
| Norma URP | <<locked>> | 92% | 40,161 psi | 65% | 2841 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,796 psi | 59% | 2740 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 44,947 psi | 72% | 2943 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 44,266 psi | 71% | 2831 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,453 psi | 70% | 2854 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,892 psi | 77% | 2887 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,397 psi | 43% | 1716 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,647 psi | 80% | 2930 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 47,137 psi | 76% | 2897 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,682 psi | 64% | 2851 fps | 96.5% |
| ReloadSwiss RS 60 | 37.2 gr | 80% | 32,401 psi | 52% | 2697 fps | 97.5% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 39,813 psi | 64% | 2858 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,960 psi | 69% | 2927 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 45,150 psi | 73% | 2828 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,320 psi | 63% | 2723 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 32,721 psi | 53% | 2618 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 44,585 psi | 72% | 2848 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,133 psi | 66% | 2805 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 37,405 psi | 60% | 2700 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 96% | 47,950 psi | 77% | 2933 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,852 psi | 55% | 2671 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,489 psi | 85% | 2936 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,424 psi | 68% | 2802 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,872 psi | 66% | 2789 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,902 psi | 69% | 2740 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,534 psi | 57% | 2595 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,792 psi | 82% | 2907 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 47,790 psi | 77% | 2920 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 42,322 psi | 68% | 2740 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,090 psi | 68% | 2802 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 33,620 psi | 54% | 2628 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 29,617 psi | 48% | 2608 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 48,486 psi | 78% | 2815 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,149 psi | 70% | 2740 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,653 psi | 62% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,305 psi | 63% | 2720 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 31,966 psi | 52% | 2566 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 90% | 39,291 psi | 63% | 2782 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 44,309 psi | 71% | 2831 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 37,971 psi | 61% | 2707 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 90% | 38,754 psi | 63% | 2785 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 36,651 psi | 59% | 2812 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,605 psi | 53% | 2589 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 43,830 psi | 71% | 2877 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 49,414 psi | 80% | 3022 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,001 psi | 65% | 2785 fps | 97.8% |
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 .25 Creedmoor loaded with the .257 | 100gr | Rhino Solid Shank. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,199 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,199 fps. Accurate 4350 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 100.0 gr projectile in 0.257" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for .25 Creedmoor with the .257 | 100gr | Rhino Solid Shank 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.