Load Specifications
Load data in caliber .260 Rem. with .264 | 120gr | Sako Powerhead Blade bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 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.
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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% | 53,592 psi | 89% | 2740 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,040 psi | 86% | 2762 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,198 psi | 85% | 2753 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,070 psi | 90% | 2831 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 51,459 psi | 85% | 2802 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,024 psi | 85% | 2871 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 88% | 52,895 psi | 88% | 2835 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 94% | 54,012 psi | 90% | 2835 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,388 psi | 87% | 2795 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 52,170 psi | 87% | 2769 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,563 psi | 89% | 2894 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,431 psi | 87% | 2946 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,417 psi | 89% | 2854 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,359 psi | 89% | 2746 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,143 psi | 90% | 2874 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,603 psi | 82% | 2874 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,389 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,925 psi | 58% | 2592 fps | 96.7% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 52,750 psi | 88% | 2848 fps | 99.2% |
| Bofors RP3 | <<locked>> | 94% | 53,708 psi | 89% | 2867 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,389 psi | 90% | 2831 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,215 psi | 90% | 2779 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,198 psi | 85% | 2818 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,765 psi | 88% | 2910 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 82% | 52,779 psi | 88% | 2789 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,563 psi | 89% | 2812 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 51,721 psi | 86% | 2828 fps | 98.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,462 psi | 90% | 2923 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 88% | 53,432 psi | 89% | 2848 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,934 psi | 76% | 2756 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,504 psi | 87% | 2877 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 51,909 psi | 86% | 2900 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,983 psi | 58% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,561 psi | 86% | 2802 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 52,895 psi | 88% | 2831 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,606 psi | 89% | 2818 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,722 psi | 89% | 2792 fps | 96.9% |
| IMR 4198 | <<locked>> | 82% | 53,983 psi | 90% | 2710 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,068 psi | 85% | 2802 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,490 psi | 89% | 2818 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,385 psi | 80% | 2812 fps | 98.6% |
| IMR 4895 | <<locked>> | 90% | 52,301 psi | 87% | 2858 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 52,388 psi | 87% | 2795 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 51,909 psi | 86% | 2772 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 52,301 psi | 87% | 2815 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,055 psi | 88% | 2769 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 53,142 psi | 88% | 2815 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 52,156 psi | 87% | 2805 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,823 psi | 88% | 2838 fps | 97% |
| Norma 201 | <<locked>> | 88% | 51,619 psi | 86% | 2782 fps | 100% |
| Norma 202 | <<locked>> | 88% | 52,185 psi | 87% | 2789 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,301 psi | 89% | 2861 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 50,459 psi | 84% | 2861 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 92% | 53,954 psi | 90% | 2887 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,661 psi | 83% | 2854 fps | 97.1% |
| Ramshot TAC | <<locked>> | 86% | 52,330 psi | 87% | 2802 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 51,924 psi | 86% | 2825 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,084 psi | 88% | 2792 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,404 psi | 59% | 1768 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,605 psi | 86% | 2772 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,199 psi | 87% | 2805 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,418 psi | 90% | 2940 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,215 psi | 90% | 2979 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,517 psi | 84% | 2890 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,343 psi | 85% | 2920 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 86% | 52,446 psi | 87% | 2766 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 52,098 psi | 87% | 2782 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,635 psi | 89% | 2858 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 54,389 psi | 90% | 2831 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,156 psi | 87% | 2805 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,301 psi | 87% | 2815 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,142 psi | 88% | 2815 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,823 psi | 88% | 2838 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,112 psi | 87% | 2867 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,331 psi | 90% | 2838 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,256 psi | 85% | 2805 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,766 psi | 89% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,548 psi | 89% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,576 psi | 87% | 2759 fps | 96.6% |
| Somchem S321 | <<locked>> | 84% | 53,040 psi | 88% | 2822 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 52,736 psi | 88% | 2730 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,853 psi | 89% | 2828 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 54,360 psi | 90% | 2861 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,802 psi | 74% | 2808 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 53,287 psi | 89% | 2697 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,954 psi | 90% | 2720 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 51,619 psi | 86% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,504 psi | 87% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 52,315 psi | 87% | 2789 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,301 psi | 89% | 2864 fps | 99% |
| Vihtavuori N530 | <<locked>> | 86% | 52,808 psi | 88% | 2792 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,317 psi | 90% | 2812 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,083 psi | 87% | 2864 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,434 psi | 62% | 2667 fps | 96.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,925 psi | 90% | 2844 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 52,228 psi | 87% | 2838 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,462 psi | 90% | 2923 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,213 psi | 85% | 2818 fps | 99.8% |
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% | 44,556 psi | 74% | 2605 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,588 psi | 81% | 2713 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,506 psi | 61% | 2513 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,569 psi | 72% | 2664 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,592 psi | 57% | 2500 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 35,650 psi | 59% | 2582 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 41,031 psi | 68% | 2621 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 34,954 psi | 58% | 2474 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,163 psi | 72% | 2638 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 42,873 psi | 71% | 2635 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,357 psi | 84% | 2841 fps | 99.7% |
| Alliant Power Pro 2000-MR | 36.6 gr | 80% | 36,999 psi | 61% | 2631 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,055 psi | 57% | 2487 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,198 psi | 83% | 2700 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,811 psi | 61% | 2552 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,506 psi | 61% | 2598 fps | 95.5% |
| Alliant Reloder-17 | 37 gr | 82% | 31,517 psi | 52% | 2500 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,895 psi | 55% | 2539 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,118 psi | 67% | 2621 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 33,214 psi | 55% | 2484 fps | 97% |
| Bofors RP7 | <<locked>> | 94% | 47,848 psi | 79% | 2723 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,179 psi | 75% | 2635 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,394 psi | 69% | 2651 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,890 psi | 76% | 2792 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 49,211 psi | 82% | 2736 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,125 psi | 83% | 2759 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,883 psi | 61% | 2546 fps | 95% |
| Hodgdon H414 | <<locked>> | 96% | 47,413 psi | 79% | 2808 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 41,408 psi | 69% | 2638 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,154 psi | 52% | 2438 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,188 psi | 62% | 2598 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 96% | 48,095 psi | 80% | 2831 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,933 psi | 43% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,914 psi | 66% | 2589 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 40,567 psi | 67% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,622 psi | 61% | 2507 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,398 psi | 79% | 2687 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 50,763 psi | 84% | 2664 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 48,124 psi | 80% | 2753 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,210 psi | 78% | 2713 fps | 95.3% |
| IMR 4831 | <<locked>> | 92% | 37,072 psi | 62% | 2595 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 37,710 psi | 63% | 2585 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 43,163 psi | 72% | 2638 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 48,472 psi | 81% | 2720 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,494 psi | 66% | 2598 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,321 psi | 69% | 2562 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 36,100 psi | 60% | 2507 fps | 98.1% |
| Lovex S065 | <<locked>> | 90% | 40,524 psi | 67% | 2595 fps | 95.2% |
| Lovex S070 | <<locked>> | 96% | 46,514 psi | 77% | 2730 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 39,900 psi | 66% | 2575 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 40,234 psi | 67% | 2589 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,172 psi | 60% | 2543 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 36,085 psi | 60% | 2582 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 35,563 psi | 59% | 2549 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 96% | 43,410 psi | 72% | 2740 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 43,091 psi | 72% | 2638 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,192 psi | 70% | 2654 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,659 psi | 78% | 2684 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,092 psi | 43% | 1578 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,225 psi | 80% | 2720 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,757 psi | 71% | 2641 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,261 psi | 64% | 2648 fps | 96.9% |
| ReloadSwiss RS 60 | 36.1 gr | 80% | 31,401 psi | 52% | 2510 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,116 psi | 63% | 2654 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,539 psi | 69% | 2730 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 43,845 psi | 73% | 2628 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,884 psi | 63% | 2523 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 31,314 psi | 52% | 2428 fps | 96% |
| Rottweil R 907 | <<locked>> | 94% | 47,848 psi | 79% | 2723 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,524 psi | 67% | 2595 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,494 psi | 66% | 2598 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 36,100 psi | 60% | 2507 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 46,514 psi | 77% | 2730 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,605 psi | 54% | 2480 fps | 95.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,017 psi | 68% | 2605 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,552 psi | 66% | 2592 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,640 psi | 69% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,360 psi | 57% | 2405 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 46,006 psi | 76% | 2654 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 46,456 psi | 77% | 2717 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 41,046 psi | 68% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,843 psi | 68% | 2608 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 32,343 psi | 54% | 2438 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 28,369 psi | 47% | 2421 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 47,239 psi | 78% | 2608 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,930 psi | 70% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,246 psi | 62% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,116 psi | 63% | 2526 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,777 psi | 51% | 2382 fps | 97% |
| Vihtavuori N160 | <<locked>> | 90% | 38,159 psi | 63% | 2592 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 42,873 psi | 71% | 2628 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 36,579 psi | 61% | 2510 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 37,275 psi | 62% | 2589 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 98% | 35,157 psi | 58% | 2615 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,372 psi | 52% | 2405 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 42,438 psi | 71% | 2674 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 47,805 psi | 79% | 2815 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,682 psi | 64% | 2589 fps | 98.1% |
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 | 120gr | Sako Powerhead Blade. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,979 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 120.0 gr projectile in 0.264" calls for a 1:8.5 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .260 Rem. with the .264 | 120gr | Sako Powerhead Blade 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.