
Load Specifications
Load data in caliber .260 Rem. with .264 | 125gr | CutEdge LZR bullet and 98 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 Alliant Power Pro 2000-MR.
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>> | 84% | 51,256 psi | 85% | 2648 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,663 psi | 87% | 2713 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,996 psi | 86% | 2703 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 51,227 psi | 85% | 2726 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,547 psi | 87% | 2703 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 52,330 psi | 87% | 2753 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,851 psi | 86% | 2825 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 88% | 53,621 psi | 89% | 2785 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 51,590 psi | 86% | 2736 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,953 psi | 88% | 2743 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,214 psi | 88% | 2720 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,011 psi | 88% | 2897 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,273 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,099 psi | 90% | 2694 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 51,735 psi | 86% | 2779 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,560 psi | 84% | 2831 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 51,459 psi | 85% | 2871 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,621 psi | 59% | 2559 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,276 psi | 65% | 2700 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,287 psi | 89% | 2799 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 50,995 psi | 85% | 2766 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 51,677 psi | 86% | 2733 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 51,605 psi | 86% | 2680 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,605 psi | 86% | 2766 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,650 psi | 89% | 2861 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 53,708 psi | 89% | 2740 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 52,214 psi | 87% | 2776 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 51,605 psi | 86% | 2822 fps | 97% |
| Hodgdon H4350 | <<locked>> | 96% | 52,736 psi | 88% | 2785 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 88% | 54,114 psi | 90% | 2795 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,528 psi | 77% | 2710 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,505 psi | 89% | 2831 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 52,504 psi | 87% | 2854 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,969 psi | 58% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,199 psi | 87% | 2753 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 54,027 psi | 90% | 2785 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,331 psi | 90% | 2769 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,389 psi | 90% | 2746 fps | 97.3% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,127 psi | 87% | 2762 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,911 psi | 90% | 2769 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,153 psi | 82% | 2766 fps | 98.9% |
| IMR 4895 | <<locked>> | 90% | 53,098 psi | 88% | 2808 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 52,953 psi | 88% | 2743 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 52,591 psi | 87% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 52,721 psi | 88% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,606 psi | 89% | 2720 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 53,911 psi | 90% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 52,692 psi | 88% | 2759 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,461 psi | 89% | 2792 fps | 97.5% |
| Norma 201 | <<locked>> | 88% | 52,243 psi | 87% | 2733 fps | 100% |
| Norma 202 | <<locked>> | 88% | 52,808 psi | 88% | 2736 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,143 psi | 90% | 2815 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,169 psi | 85% | 2815 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 50,995 psi | 85% | 2785 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,459 psi | 84% | 2812 fps | 97.6% |
| Ramshot TAC | <<locked>> | 86% | 53,142 psi | 88% | 2756 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,736 psi | 88% | 2779 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,766 psi | 89% | 2743 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,404 psi | 59% | 1726 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,504 psi | 87% | 2726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,098 psi | 88% | 2766 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,561 psi | 86% | 2838 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 51,285 psi | 85% | 2874 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,532 psi | 86% | 2848 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,837 psi | 86% | 2871 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 86% | 53,301 psi | 89% | 2717 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 52,736 psi | 88% | 2730 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 50,836 psi | 84% | 2756 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 51,677 psi | 86% | 2733 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,692 psi | 88% | 2759 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,721 psi | 88% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,911 psi | 90% | 2766 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,461 psi | 89% | 2792 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,794 psi | 88% | 2818 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 51,198 psi | 85% | 2730 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,996 psi | 86% | 2759 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,244 psi | 90% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,244 psi | 90% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,185 psi | 88% | 2713 fps | 97.1% |
| Somchem S321 | <<locked>> | 84% | 53,824 psi | 89% | 2772 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,345 psi | 89% | 2674 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,389 psi | 90% | 2776 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 51,648 psi | 86% | 2759 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,832 psi | 76% | 2766 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,012 psi | 90% | 2644 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,433 psi | 90% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,286 psi | 87% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,214 psi | 88% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,243 psi | 88% | 2743 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,056 psi | 90% | 2815 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 53,432 psi | 89% | 2743 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 51,619 psi | 86% | 2717 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,910 psi | 88% | 2818 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,377 psi | 64% | 2638 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,227 psi | 85% | 2749 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 53,055 psi | 88% | 2789 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 51,996 psi | 86% | 2828 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,677 psi | 86% | 2766 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% | 45,194 psi | 75% | 2556 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,153 psi | 82% | 2661 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,202 psi | 62% | 2470 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,469 psi | 74% | 2625 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,052 psi | 81% | 2648 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 35,244 psi | 59% | 2461 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 33,692 psi | 56% | 2484 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 41,408 psi | 69% | 2575 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 35,447 psi | 59% | 2434 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,497 psi | 72% | 2589 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 43,265 psi | 72% | 2579 fps | 100% |
| Alliant Power Pro 2000-MR | 35.9 gr | 80% | 37,463 psi | 62% | 2592 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,621 psi | 58% | 2451 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,821 psi | 84% | 2648 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,159 psi | 62% | 2507 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,824 psi | 58% | 2507 fps | 95.3% |
| Alliant Reloder-17 | 35.4 gr | 80% | 29,820 psi | 50% | 2405 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,343 psi | 52% | 2451 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,579 psi | 61% | 2635 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,640 psi | 68% | 2579 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 33,866 psi | 56% | 2448 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 48,573 psi | 81% | 2680 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,469 psi | 76% | 2582 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,930 psi | 70% | 2605 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,557 psi | 77% | 2749 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 49,995 psi | 83% | 2687 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 37,347 psi | 62% | 2503 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 45,179 psi | 75% | 2713 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 94% | 49,588 psi | 82% | 2736 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 41,742 psi | 69% | 2589 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,660 psi | 49% | 2349 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,666 psi | 63% | 2552 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 48,921 psi | 81% | 2792 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 43% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,219 psi | 67% | 2543 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 41,278 psi | 69% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,188 psi | 62% | 2467 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,150 psi | 75% | 2592 fps | 95.3% |
| IMR 4350 | <<locked>> | 98% | 48,689 psi | 81% | 2707 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 44,788 psi | 74% | 2615 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 35,143 psi | 58% | 2500 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 38,072 psi | 63% | 2539 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 43,497 psi | 72% | 2589 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 49,066 psi | 82% | 2671 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,306 psi | 67% | 2559 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 41,887 psi | 70% | 2520 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 36,666 psi | 61% | 2464 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 38,638 psi | 64% | 2507 fps | 95% |
| Lovex S070 | <<locked>> | 94% | 44,179 psi | 73% | 2635 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 40,538 psi | 67% | 2533 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 40,886 psi | 68% | 2546 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,550 psi | 61% | 2497 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 34,461 psi | 57% | 2493 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,056 psi | 60% | 2507 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 41,147 psi | 68% | 2638 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 43,613 psi | 72% | 2592 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,047 psi | 72% | 2615 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,137 psi | 78% | 2638 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 44% | 1542 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,023 psi | 81% | 2671 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,381 psi | 72% | 2598 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,769 psi | 64% | 2605 fps | 97.4% |
| ReloadSwiss RS 60 | 35.4 gr | 80% | 31,792 psi | 53% | 2470 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,303 psi | 60% | 2562 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,334 psi | 65% | 2628 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 44,425 psi | 74% | 2579 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,450 psi | 64% | 2484 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,908 psi | 53% | 2392 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 48,573 psi | 81% | 2680 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,638 psi | 64% | 2507 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,306 psi | 67% | 2559 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,666 psi | 61% | 2464 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 44,179 psi | 73% | 2635 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,982 psi | 55% | 2438 fps | 96% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,553 psi | 69% | 2562 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,972 psi | 66% | 2546 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,163 psi | 70% | 2493 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,824 psi | 58% | 2362 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 46,485 psi | 77% | 2608 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 46,992 psi | 78% | 2667 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 41,640 psi | 69% | 2497 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,379 psi | 69% | 2562 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 32,895 psi | 55% | 2402 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 26,847 psi | 45% | 2326 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 47,805 psi | 79% | 2559 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,482 psi | 71% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,826 psi | 63% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,740 psi | 64% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,328 psi | 52% | 2343 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 36,158 psi | 60% | 2497 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,613 psi | 72% | 2585 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,231 psi | 62% | 2470 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,418 psi | 59% | 2497 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 33,460 psi | 56% | 2526 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,776 psi | 49% | 2316 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 42,989 psi | 71% | 2628 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 45,179 psi | 75% | 2713 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,465 psi | 66% | 2552 fps | 98.5% |
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 98 powders for .260 Rem. loaded with the .264 | 125gr | CutEdge LZR. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,897 fps. Accurate 4350 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.264" calls for a 1:8.0 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 Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .260 Rem. with the .264 | 125gr | CutEdge LZR 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.