Load Specifications
Load data in caliber .25 Creedmoor with .257 | 117gr | Barnes LRX BT bullet and 96 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 Hodgdon Superformance.
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>> | 84% | 54,143 psi | 87% | 2697 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,779 psi | 85% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,447 psi | 88% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,564 psi | 90% | 2769 fps | 97% |
| Accurate 4064 | <<locked>> | 90% | 52,765 psi | 85% | 2769 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,825 psi | 90% | 2897 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 53,084 psi | 86% | 2792 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 54,259 psi | 88% | 2795 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,535 psi | 90% | 2795 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,011 psi | 86% | 2726 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,562 psi | 85% | 2907 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,186 psi | 87% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,810 psi | 88% | 2838 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,447 psi | 86% | 2897 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,839 psi | 88% | 2940 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,247 psi | 62% | 2635 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,627 psi | 69% | 2789 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,779 psi | 85% | 2805 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 54,578 psi | 88% | 2831 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,810 psi | 88% | 2799 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,157 psi | 87% | 2733 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,853 psi | 88% | 2825 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,069 psi | 86% | 2867 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 55,622 psi | 90% | 2841 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 98% | 55,013 psi | 89% | 2890 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 96% | 55,999 psi | 90% | 2854 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 86% | 53,650 psi | 87% | 2802 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,922 psi | 81% | 2779 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,084 psi | 86% | 2838 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 51,924 psi | 84% | 2864 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 57% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,853 psi | 88% | 2805 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 53,867 psi | 87% | 2792 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,780 psi | 87% | 2779 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,766 psi | 87% | 2756 fps | 97.5% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,129 psi | 89% | 2825 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,592 psi | 86% | 2782 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,576 psi | 85% | 2831 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 52,837 psi | 85% | 2818 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,535 psi | 90% | 2795 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,750 psi | 85% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,069 psi | 86% | 2726 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 53,650 psi | 87% | 2776 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,072 psi | 90% | 2825 fps | 98.9% |
| Lovex S070 | <<locked>> | 98% | 53,417 psi | 86% | 2805 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 55,506 psi | 90% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,043 psi | 90% | 2792 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,012 psi | 87% | 2825 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 55,564 psi | 90% | 2871 fps | 96% |
| Norma URPᴾ | <<locked>> | 100% | 54,563 psi | 88% | 2881 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 90% | 54,433 psi | 88% | 2851 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,476 psi | 86% | 2874 fps | 98.4% |
| Ramshot TAC | <<locked>> | 86% | 56,028 psi | 90% | 2818 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,753 psi | 90% | 2838 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,258 psi | 86% | 2749 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,824 psi | 58% | 1749 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,361 psi | 89% | 2779 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,941 psi | 90% | 2825 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,955 psi | 89% | 2900 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,476 psi | 88% | 2936 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,593 psi | 90% | 2920 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2949 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 84% | 53,229 psi | 86% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,043 psi | 90% | 2792 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,447 psi | 88% | 2822 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,810 psi | 88% | 2799 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,072 psi | 90% | 2825 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,750 psi | 85% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 53,650 psi | 87% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 53,417 psi | 86% | 2805 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,547 psi | 85% | 2828 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,375 psi | 88% | 2792 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,882 psi | 89% | 2815 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,577 psi | 86% | 2684 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,954 psi | 87% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,895 psi | 85% | 2723 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 53,534 psi | 86% | 2782 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 53,142 psi | 86% | 2684 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,838 psi | 87% | 2782 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,955 psi | 89% | 2822 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,255 psi | 79% | 2835 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 53,621 psi | 86% | 2651 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,809 psi | 87% | 2671 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,651 psi | 90% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,156 psi | 86% | 2726 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 52,823 psi | 85% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,983 psi | 87% | 2828 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 52,721 psi | 85% | 2746 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,621 psi | 88% | 2769 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,127 psi | 86% | 2835 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,655 psi | 67% | 2713 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,099 psi | 87% | 2805 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 52,344 psi | 84% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,405 psi | 89% | 2897 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,113 psi | 55% | 2625 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,810 psi | 88% | 2825 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% | 47,776 psi | 77% | 2605 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,727 psi | 66% | 2536 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,645 psi | 77% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,834 psi | 79% | 2661 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 38,493 psi | 62% | 2533 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,258 psi | 55% | 2503 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 44,208 psi | 71% | 2641 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,507 psi | 60% | 2490 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,267 psi | 75% | 2648 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,427 psi | 75% | 2635 fps | 100% |
| Alliant Power Pro 2000-MR | 35 gr | 80% | 40,001 psi | 65% | 2667 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,985 psi | 60% | 2510 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,929 psi | 64% | 2579 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,722 psi | 56% | 2520 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,039 psi | 52% | 2477 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,979 psi | 48% | 2421 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,985 psi | 60% | 2657 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,337 psi | 70% | 2644 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 36,608 psi | 59% | 2513 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 45,585 psi | 74% | 2644 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,051 psi | 78% | 2638 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,889 psi | 72% | 2667 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,458 psi | 80% | 2808 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 37,594 psi | 61% | 2520 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 42,453 psi | 68% | 2671 fps | 95% |
| Hodgdon H4350 | <<locked>> | 92% | 49,168 psi | 79% | 2746 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,614 psi | 72% | 2654 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,979 psi | 48% | 2369 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,321 psi | 65% | 2618 fps | 99.2% |
| Hodgdon Superformance | 41.9 gr | 92% | 45,179 psi | 73% | 2743 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 43% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,830 psi | 69% | 2605 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 44,251 psi | 71% | 2648 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,378 psi | 64% | 2523 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,527 psi | 72% | 2595 fps | 95.4% |
| IMR 4350 | <<locked>> | 94% | 45,585 psi | 74% | 2667 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,454 psi | 72% | 2625 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 33,344 psi | 54% | 2464 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 40,915 psi | 66% | 2608 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 46,267 psi | 75% | 2648 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 43,308 psi | 70% | 2621 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,280 psi | 71% | 2579 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,378 psi | 64% | 2533 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 38,957 psi | 63% | 2523 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 41,800 psi | 67% | 2598 fps | 95% |
| Norma 201 | <<locked>> | 80% | 43,366 psi | 70% | 2595 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 43,410 psi | 70% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,320 psi | 63% | 2566 fps | 98.2% |
| Norma 204 | <<locked>> | 98% | 52,127 psi | 84% | 2815 fps | 95.2% |
| Norma URP | <<locked>> | 86% | 34,911 psi | 56% | 2513 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,638 psi | 62% | 2572 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 41,220 psi | 66% | 2654 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,253 psi | 75% | 2657 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,455 psi | 73% | 2671 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,850 psi | 80% | 2697 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 43% | 1562 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,677 psi | 83% | 2726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,712 psi | 66% | 2559 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,626 psi | 67% | 2674 fps | 98.3% |
| ReloadSwiss RS 60 | 34.5 gr | 80% | 34,098 psi | 55% | 2546 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,651 psi | 59% | 2579 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,378 psi | 64% | 2644 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 47,123 psi | 76% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,191 psi | 66% | 2546 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,505 psi | 56% | 2461 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 45,585 psi | 74% | 2644 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,957 psi | 63% | 2523 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,308 psi | 70% | 2621 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,378 psi | 64% | 2533 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 41,800 psi | 67% | 2598 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,331 psi | 57% | 2507 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,498 psi | 72% | 2628 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,482 psi | 69% | 2605 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,686 psi | 72% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,130 psi | 60% | 2418 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,700 psi | 70% | 2572 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 50,009 psi | 81% | 2726 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,353 psi | 72% | 2552 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,164 psi | 71% | 2625 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,520 psi | 57% | 2470 fps | 97.7% |
| Somchem S365 | <<locked>> | 82% | 27,354 psi | 44% | 2349 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 50,386 psi | 81% | 2608 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,962 psi | 73% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,640 psi | 66% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,147 psi | 66% | 2536 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,605 psi | 54% | 2405 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 34,040 psi | 55% | 2457 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 46,122 psi | 74% | 2641 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,726 psi | 64% | 2530 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 35,766 psi | 58% | 2513 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 32,155 psi | 52% | 2500 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,950 psi | 48% | 2333 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 45,832 psi | 74% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,453 psi | 68% | 2671 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,023 psi | 48% | 2493 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,192 psi | 68% | 2615 fps | 99.2% |
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 .25 Creedmoor loaded with the .257 | 117gr | Barnes LRX BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,949 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,949 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 (427 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 117.0 gr projectile in 0.257" calls for a 1:7.5 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, Hodgdon Superformance rank at the top here: for .25 Creedmoor with the .257 | 117gr | Barnes LRX BT 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.