Load Specifications
Load data in caliber .260 Rem. with .264 | 125gr | Peregrine Glider GRM bullet and 99 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.
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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>> | 86% | 54,288 psi | 90% | 2684 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,475 psi | 87% | 2707 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,735 psi | 86% | 2700 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,317 psi | 90% | 2769 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,417 psi | 87% | 2697 fps | 96% |
| Accurate 4064 | <<locked>> | 92% | 51,663 psi | 86% | 2743 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,285 psi | 85% | 2815 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 53,417 psi | 89% | 2782 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 54,230 psi | 90% | 2776 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,402 psi | 87% | 2733 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 52,939 psi | 88% | 2713 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,288 psi | 90% | 2838 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,881 psi | 88% | 2894 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,143 psi | 90% | 2802 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,809 psi | 89% | 2687 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 51,213 psi | 85% | 2766 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,038 psi | 83% | 2822 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 50,966 psi | 85% | 2861 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,273 psi | 59% | 2549 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,127 psi | 88% | 2795 fps | 99.4% |
| Bofors RP3 | <<locked>> | 94% | 54,143 psi | 90% | 2812 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 51,532 psi | 86% | 2726 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 51,372 psi | 85% | 2674 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,459 psi | 85% | 2762 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,476 psi | 89% | 2858 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 53,026 psi | 88% | 2726 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,041 psi | 90% | 2753 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 52,054 psi | 86% | 2772 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 98% | 51,053 psi | 85% | 2812 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 53,911 psi | 90% | 2792 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,992 psi | 76% | 2697 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,881 psi | 88% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 52,069 psi | 87% | 2844 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,896 psi | 58% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,011 psi | 86% | 2746 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 53,316 psi | 89% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,751 psi | 89% | 2759 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,273 psi | 90% | 2743 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 54,244 psi | 90% | 2648 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,619 psi | 86% | 2753 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,838 psi | 89% | 2766 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,602 psi | 81% | 2753 fps | 98.8% |
| IMR 4895 | <<locked>> | 90% | 52,504 psi | 87% | 2799 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 52,402 psi | 87% | 2733 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 52,417 psi | 87% | 2720 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 52,504 psi | 87% | 2756 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,403 psi | 89% | 2713 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 53,316 psi | 89% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 52,562 psi | 87% | 2753 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,345 psi | 89% | 2785 fps | 97.4% |
| Norma 201 | <<locked>> | 88% | 52,040 psi | 86% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 88% | 52,576 psi | 87% | 2733 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,940 psi | 90% | 2808 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,039 psi | 85% | 2808 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 50,821 psi | 84% | 2779 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,995 psi | 83% | 2802 fps | 97.5% |
| Ramshot TAC | <<locked>> | 86% | 52,982 psi | 88% | 2753 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,185 psi | 87% | 2766 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,635 psi | 89% | 2736 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,346 psi | 59% | 1722 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,924 psi | 86% | 2713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,605 psi | 87% | 2756 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,358 psi | 85% | 2831 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,462 psi | 90% | 2917 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,966 psi | 85% | 2835 fps | 98.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,372 psi | 85% | 2861 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 86% | 52,663 psi | 87% | 2707 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 52,504 psi | 87% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 54,056 psi | 90% | 2802 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 51,532 psi | 86% | 2726 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,562 psi | 87% | 2753 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,504 psi | 87% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,316 psi | 89% | 2756 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,345 psi | 89% | 2785 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,634 psi | 87% | 2815 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 51,024 psi | 85% | 2723 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,837 psi | 86% | 2753 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,056 psi | 90% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,099 psi | 90% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,113 psi | 88% | 2707 fps | 97% |
| Somchem S321 | <<locked>> | 84% | 53,679 psi | 89% | 2769 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,142 psi | 88% | 2671 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,230 psi | 90% | 2772 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 51,082 psi | 85% | 2749 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,339 psi | 75% | 2756 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 53,780 psi | 89% | 2638 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,215 psi | 90% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,025 psi | 86% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,997 psi | 88% | 2710 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 52,707 psi | 88% | 2733 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,563 psi | 89% | 2805 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 86% | 52,808 psi | 88% | 2733 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 51,039 psi | 85% | 2703 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,388 psi | 87% | 2808 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,869 psi | 63% | 2625 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,389 psi | 90% | 2792 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 52,460 psi | 87% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 51,488 psi | 86% | 2818 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,488 psi | 86% | 2759 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% | 44,918 psi | 75% | 2552 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,907 psi | 81% | 2654 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,970 psi | 61% | 2464 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,237 psi | 73% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,965 psi | 81% | 2641 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 34,983 psi | 58% | 2451 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 35,882 psi | 60% | 2533 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 41,176 psi | 68% | 2569 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 34,983 psi | 58% | 2421 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,308 psi | 72% | 2582 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 42,989 psi | 71% | 2572 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,546 psi | 84% | 2779 fps | 99.8% |
| Alliant Power Pro 2000-MR | 35.7 gr | 80% | 37,275 psi | 62% | 2585 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,432 psi | 57% | 2444 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,546 psi | 84% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,956 psi | 61% | 2500 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,389 psi | 57% | 2493 fps | 95% |
| Alliant Reloder-17 | 36.1 gr | 82% | 31,763 psi | 53% | 2457 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,241 psi | 52% | 2444 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,451 psi | 67% | 2572 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 33,692 psi | 56% | 2441 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 48,486 psi | 81% | 2677 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,237 psi | 75% | 2575 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,727 psi | 69% | 2598 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,340 psi | 77% | 2740 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 49,763 psi | 83% | 2680 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,488 psi | 84% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 37,173 psi | 62% | 2497 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 94% | 44,715 psi | 74% | 2700 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,539 psi | 69% | 2582 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,486 psi | 49% | 2343 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,478 psi | 62% | 2549 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 48,530 psi | 81% | 2785 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,947 psi | 43% | 1503 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,030 psi | 67% | 2536 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 41,017 psi | 68% | 2582 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,695 psi | 61% | 2454 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,020 psi | 75% | 2585 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 51,343 psi | 85% | 2608 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 48,573 psi | 81% | 2700 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 44,657 psi | 74% | 2608 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 34,954 psi | 58% | 2493 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,855 psi | 63% | 2533 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 43,308 psi | 72% | 2582 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 48,878 psi | 81% | 2667 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,089 psi | 67% | 2552 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 41,655 psi | 69% | 2513 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 36,463 psi | 61% | 2461 fps | 98.5% |
| Lovex S065 | <<locked>> | 90% | 40,930 psi | 68% | 2549 fps | 95.7% |
| Lovex S070 | <<locked>> | 94% | 44,034 psi | 73% | 2628 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,277 psi | 67% | 2526 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 40,683 psi | 68% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,361 psi | 60% | 2490 fps | 97.2% |
| Norma URP | <<locked>> | 90% | 36,535 psi | 61% | 2539 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 35,853 psi | 60% | 2500 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 41,031 psi | 68% | 2635 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 43,439 psi | 72% | 2585 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,525 psi | 71% | 2602 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,978 psi | 78% | 2631 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,121 psi | 43% | 1535 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,820 psi | 81% | 2667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,221 psi | 72% | 2592 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,522 psi | 64% | 2598 fps | 97.3% |
| ReloadSwiss RS 60 | 35.2 gr | 80% | 31,633 psi | 53% | 2464 fps | 98.3% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,882 psi | 60% | 2552 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,247 psi | 65% | 2621 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 44,179 psi | 73% | 2572 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,218 psi | 63% | 2477 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,720 psi | 53% | 2385 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 48,486 psi | 81% | 2677 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,930 psi | 68% | 2549 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,089 psi | 67% | 2552 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 36,463 psi | 61% | 2461 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 44,034 psi | 73% | 2628 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,779 psi | 54% | 2431 fps | 95.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,365 psi | 69% | 2556 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,755 psi | 66% | 2539 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,930 psi | 70% | 2487 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,621 psi | 58% | 2356 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 46,340 psi | 77% | 2602 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 46,818 psi | 78% | 2661 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 41,437 psi | 69% | 2490 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,191 psi | 68% | 2556 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 32,692 psi | 54% | 2395 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 26,687 psi | 44% | 2320 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 47,558 psi | 79% | 2552 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,235 psi | 70% | 2484 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,579 psi | 62% | 2467 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,537 psi | 64% | 2477 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,125 psi | 52% | 2339 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 35,969 psi | 60% | 2490 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 43,424 psi | 72% | 2579 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 37,043 psi | 62% | 2464 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,244 psi | 59% | 2490 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 33,315 psi | 55% | 2516 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,660 psi | 49% | 2310 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 42,772 psi | 71% | 2621 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 45,063 psi | 75% | 2707 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,305 psi | 65% | 2546 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 111 powders for .260 Rem. loaded with the .264 | 125gr | Peregrine Glider GRM. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,917 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.264" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 | Peregrine Glider GRM they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.