Load Specifications
Load data in caliber .260 Rem. with .264 | 124gr | Peregrine VLR-4 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.
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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% | 51,285 psi | 85% | 2661 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,040 psi | 88% | 2733 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 52,344 psi | 87% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 51,184 psi | 85% | 2743 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,750 psi | 88% | 2720 fps | 96.2% |
| Accurate 4064 | <<locked>> | 92% | 52,272 psi | 87% | 2766 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,040 psi | 86% | 2841 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 88% | 53,925 psi | 90% | 2805 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 51,503 psi | 86% | 2749 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,939 psi | 88% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,229 psi | 88% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,258 psi | 88% | 2913 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 51,024 psi | 85% | 2772 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,172 psi | 90% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 51,706 psi | 86% | 2792 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,763 psi | 84% | 2851 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 51,677 psi | 86% | 2890 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,781 psi | 59% | 2579 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,610 psi | 66% | 2720 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,519 psi | 89% | 2815 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 51,285 psi | 85% | 2785 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 51,880 psi | 86% | 2749 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 51,590 psi | 86% | 2694 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,909 psi | 86% | 2785 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,969 psi | 90% | 2881 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 53,722 psi | 89% | 2753 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 52,475 psi | 87% | 2795 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 51,764 psi | 86% | 2838 fps | 97% |
| Hodgdon H4350 | <<locked>> | 96% | 52,895 psi | 88% | 2805 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 54,462 psi | 90% | 2818 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,746 psi | 78% | 2726 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,345 psi | 89% | 2844 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 52,953 psi | 88% | 2874 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 58% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,533 psi | 87% | 2769 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 54,012 psi | 90% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,244 psi | 90% | 2785 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,169 psi | 85% | 2710 fps | 96.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,301 psi | 87% | 2779 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,157 psi | 90% | 2785 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,342 psi | 82% | 2782 fps | 98.9% |
| IMR 4895 | <<locked>> | 90% | 53,011 psi | 88% | 2822 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 52,939 psi | 88% | 2756 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 52,924 psi | 88% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,069 psi | 88% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,940 psi | 90% | 2736 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 53,824 psi | 89% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 52,924 psi | 88% | 2776 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,650 psi | 89% | 2805 fps | 97.5% |
| Norma 201 | <<locked>> | 88% | 52,605 psi | 87% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,171 psi | 88% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,433 psi | 90% | 2831 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,372 psi | 85% | 2831 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 51,242 psi | 85% | 2802 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,589 psi | 84% | 2825 fps | 97.6% |
| Ramshot TAC | <<locked>> | 86% | 53,403 psi | 89% | 2776 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,605 psi | 87% | 2789 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,085 psi | 90% | 2762 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,288 psi | 59% | 1736 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,489 psi | 87% | 2740 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,345 psi | 89% | 2782 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,880 psi | 86% | 2854 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 51,474 psi | 86% | 2890 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,663 psi | 86% | 2861 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,315 psi | 87% | 2894 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 86% | 53,345 psi | 89% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,084 psi | 88% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 54,462 psi | 90% | 2825 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 51,880 psi | 86% | 2749 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,924 psi | 88% | 2776 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,069 psi | 88% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,824 psi | 89% | 2779 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,650 psi | 89% | 2805 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,997 psi | 88% | 2838 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 51,459 psi | 85% | 2746 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,272 psi | 87% | 2776 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,244 psi | 90% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 50,923 psi | 85% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,403 psi | 89% | 2730 fps | 97.1% |
| Somchem S321 | <<locked>> | 84% | 54,143 psi | 90% | 2792 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,679 psi | 89% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 51,097 psi | 85% | 2743 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 51,938 psi | 86% | 2779 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,021 psi | 76% | 2782 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,085 psi | 90% | 2661 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,433 psi | 90% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,286 psi | 87% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,519 psi | 89% | 2733 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,098 psi | 88% | 2756 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,273 psi | 90% | 2831 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 53,388 psi | 89% | 2756 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 51,880 psi | 86% | 2733 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2835 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,566 psi | 64% | 2651 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,343 psi | 85% | 2762 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 52,968 psi | 88% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,156 psi | 87% | 2844 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,924 psi | 86% | 2782 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% | 45,266 psi | 75% | 2572 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,487 psi | 82% | 2680 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,318 psi | 62% | 2484 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,483 psi | 74% | 2638 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,327 psi | 82% | 2664 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 35,317 psi | 59% | 2474 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 33,968 psi | 56% | 2503 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 41,771 psi | 69% | 2595 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,534 psi | 59% | 2448 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,903 psi | 73% | 2608 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 43,758 psi | 73% | 2598 fps | 100% |
| Alliant Power Pro 2000-MR | 36.3 gr | 80% | 37,739 psi | 63% | 2612 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,708 psi | 58% | 2464 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,923 psi | 85% | 2661 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,507 psi | 62% | 2526 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,795 psi | 58% | 2520 fps | 95.3% |
| Alliant Reloder-17 | 36.6 gr | 82% | 31,923 psi | 53% | 2474 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,488 psi | 52% | 2464 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,956 psi | 61% | 2654 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,944 psi | 68% | 2598 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 33,939 psi | 56% | 2461 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 48,863 psi | 81% | 2700 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,861 psi | 76% | 2602 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,264 psi | 70% | 2625 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,543 psi | 77% | 2759 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 50,067 psi | 83% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 37,652 psi | 63% | 2523 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 45,397 psi | 75% | 2730 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 49,835 psi | 83% | 2753 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 42,105 psi | 70% | 2608 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,646 psi | 49% | 2362 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,971 psi | 63% | 2572 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 96% | 49,008 psi | 81% | 2808 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 43% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,596 psi | 67% | 2562 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 41,365 psi | 69% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,275 psi | 62% | 2480 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,136 psi | 75% | 2605 fps | 95.3% |
| IMR 4350 | <<locked>> | 98% | 48,863 psi | 81% | 2723 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,078 psi | 75% | 2635 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 35,375 psi | 59% | 2516 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 38,392 psi | 64% | 2559 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 43,903 psi | 73% | 2608 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 49,037 psi | 81% | 2687 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,321 psi | 67% | 2572 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 41,930 psi | 70% | 2533 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 36,738 psi | 61% | 2480 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 38,914 psi | 65% | 2523 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 44,425 psi | 74% | 2651 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 40,567 psi | 67% | 2546 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 40,944 psi | 68% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,883 psi | 61% | 2516 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 34,708 psi | 58% | 2510 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,303 psi | 60% | 2526 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 41,278 psi | 69% | 2654 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 43,584 psi | 72% | 2605 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,004 psi | 71% | 2628 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,456 psi | 79% | 2657 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,223 psi | 44% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,052 psi | 81% | 2687 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,642 psi | 73% | 2615 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,102 psi | 65% | 2625 fps | 97.5% |
| ReloadSwiss RS 60 | 35.7 gr | 80% | 31,807 psi | 53% | 2484 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,492 psi | 61% | 2579 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,479 psi | 66% | 2644 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 44,512 psi | 74% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,508 psi | 64% | 2497 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,981 psi | 53% | 2405 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 48,863 psi | 81% | 2700 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,914 psi | 65% | 2523 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,321 psi | 67% | 2572 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,738 psi | 61% | 2480 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 44,425 psi | 74% | 2651 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,228 psi | 55% | 2457 fps | 96% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,539 psi | 69% | 2575 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,292 psi | 67% | 2566 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,264 psi | 70% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,925 psi | 58% | 2379 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,845 psi | 73% | 2575 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 47,355 psi | 79% | 2687 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 41,698 psi | 69% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,669 psi | 69% | 2582 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 32,967 psi | 55% | 2415 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 27,064 psi | 45% | 2346 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 47,892 psi | 80% | 2572 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,554 psi | 71% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,971 psi | 63% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,812 psi | 64% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,386 psi | 52% | 2356 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 36,390 psi | 60% | 2513 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 43,642 psi | 73% | 2598 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,260 psi | 62% | 2484 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,636 psi | 59% | 2513 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 33,634 psi | 56% | 2539 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,979 psi | 50% | 2333 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,308 psi | 72% | 2648 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 45,397 psi | 75% | 2730 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,479 psi | 66% | 2566 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 109 powders for .260 Rem. loaded with the .264 | 124gr | Peregrine VLR-4. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,913 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,913 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 124.0 gr projectile in 0.264" calls for a 1:8.0 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 | 124gr | Peregrine VLR-4 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.