Load Specifications
Load data in caliber .260 Rem. with .264 | 120gr | Barnes TAC-X bullet and 97 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% | 51,851 psi | 86% | 2726 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,330 psi | 89% | 2792 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,040 psi | 88% | 2785 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 51,779 psi | 86% | 2805 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,359 psi | 89% | 2785 fps | 96.2% |
| Accurate 4064 | <<locked>> | 92% | 52,794 psi | 88% | 2828 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,953 psi | 88% | 2910 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 86% | 51,097 psi | 85% | 2818 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 92% | 52,011 psi | 86% | 2815 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,635 psi | 89% | 2825 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,780 psi | 89% | 2799 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,824 psi | 89% | 2982 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 51,822 psi | 86% | 2841 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 52,170 psi | 87% | 2854 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,213 psi | 85% | 2913 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,344 psi | 87% | 2956 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,129 psi | 60% | 2635 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,219 psi | 67% | 2782 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,157 psi | 90% | 2884 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 52,054 psi | 86% | 2851 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,518 psi | 87% | 2815 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 51,996 psi | 86% | 2756 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,736 psi | 88% | 2851 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,389 psi | 90% | 2946 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 54,230 psi | 90% | 2818 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,185 psi | 88% | 2861 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 52,533 psi | 87% | 2904 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 96% | 53,795 psi | 89% | 2874 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 86% | 51,576 psi | 86% | 2828 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,253 psi | 79% | 2789 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,085 psi | 90% | 2910 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,592 psi | 89% | 2940 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,114 psi | 58% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,750 psi | 88% | 2828 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 51,184 psi | 85% | 2815 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 51,634 psi | 86% | 2802 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,634 psi | 86% | 2776 fps | 96.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,649 psi | 87% | 2838 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 51,358 psi | 85% | 2799 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,140 psi | 83% | 2848 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 53,490 psi | 89% | 2887 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 53,635 psi | 89% | 2825 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,534 psi | 89% | 2808 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,548 psi | 89% | 2841 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,215 psi | 90% | 2799 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 54,346 psi | 90% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,461 psi | 89% | 2838 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,447 psi | 90% | 2874 fps | 97.5% |
| Norma 201 | <<locked>> | 88% | 52,881 psi | 88% | 2812 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,447 psi | 89% | 2815 fps | 100% |
| Norma 203B | <<locked>> | 90% | 51,343 psi | 85% | 2841 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 52,257 psi | 87% | 2900 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 51,822 psi | 86% | 2867 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,169 psi | 85% | 2890 fps | 97.6% |
| Ramshot TAC | <<locked>> | 86% | 54,056 psi | 90% | 2841 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,374 psi | 89% | 2858 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 51,198 psi | 85% | 2772 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,520 psi | 59% | 1781 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,910 psi | 88% | 2802 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,896 psi | 90% | 2848 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,402 psi | 87% | 2920 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 51,938 psi | 86% | 2956 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,634 psi | 87% | 2933 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,678 psi | 88% | 2956 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 86% | 53,867 psi | 89% | 2799 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,301 psi | 89% | 2808 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 51,895 psi | 86% | 2841 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 52,518 psi | 87% | 2815 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,461 psi | 89% | 2838 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,548 psi | 89% | 2841 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,346 psi | 90% | 2844 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,447 psi | 90% | 2874 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,925 psi | 90% | 2907 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 51,808 psi | 86% | 2808 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,707 psi | 88% | 2838 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 51,488 psi | 86% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 51,517 psi | 86% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,288 psi | 90% | 2799 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 51,198 psi | 85% | 2802 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,983 psi | 90% | 2756 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 51,793 psi | 86% | 2808 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 52,344 psi | 87% | 2841 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,470 psi | 77% | 2844 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 51,227 psi | 85% | 2677 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 51,750 psi | 86% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,084 psi | 88% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,085 psi | 90% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,751 psi | 89% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 51,430 psi | 85% | 2844 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 54,012 psi | 90% | 2822 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 52,228 psi | 87% | 2792 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,722 psi | 89% | 2900 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,030 psi | 65% | 2710 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 52,098 psi | 87% | 2828 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 53,882 psi | 90% | 2871 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,910 psi | 88% | 2910 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,663 psi | 87% | 2848 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% | 45,643 psi | 76% | 2631 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,937 psi | 83% | 2743 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,942 psi | 63% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,194 psi | 75% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,024 psi | 83% | 2730 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 35,882 psi | 60% | 2533 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 34,505 psi | 57% | 2562 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 41,959 psi | 70% | 2654 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 35,781 psi | 59% | 2503 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,092 psi | 73% | 2664 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 44,150 psi | 73% | 2661 fps | 100% |
| Alliant Power Pro 2000-MR | 37.6 gr | 80% | 37,985 psi | 63% | 2667 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,201 psi | 58% | 2523 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,724 psi | 63% | 2582 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,288 psi | 59% | 2579 fps | 95.3% |
| Alliant Reloder-17 | 37.1 gr | 80% | 30,313 psi | 50% | 2477 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,952 psi | 53% | 2523 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,318 psi | 62% | 2713 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,205 psi | 68% | 2654 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 34,403 psi | 57% | 2520 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 49,168 psi | 82% | 2759 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,064 psi | 77% | 2661 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,598 psi | 71% | 2680 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,195 psi | 78% | 2828 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 50,691 psi | 84% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 37,985 psi | 63% | 2579 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 45,905 psi | 76% | 2792 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 94% | 50,386 psi | 84% | 2818 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 42,351 psi | 70% | 2664 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,965 psi | 50% | 2415 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,348 psi | 64% | 2631 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 49,763 psi | 83% | 2877 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 43% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,799 psi | 68% | 2618 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 41,727 psi | 69% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,550 psi | 62% | 2536 fps | 96.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,745 psi | 76% | 2667 fps | 95.3% |
| IMR 4350 | <<locked>> | 98% | 49,342 psi | 82% | 2785 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,498 psi | 76% | 2694 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 35,853 psi | 60% | 2575 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 38,638 psi | 64% | 2615 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 44,092 psi | 73% | 2664 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 49,719 psi | 83% | 2749 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,785 psi | 68% | 2631 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,525 psi | 71% | 2598 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 37,318 psi | 62% | 2543 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 39,189 psi | 65% | 2579 fps | 95% |
| Lovex S070 | <<locked>> | 94% | 45,049 psi | 75% | 2713 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 41,176 psi | 68% | 2608 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 41,553 psi | 69% | 2621 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,086 psi | 62% | 2572 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 34,925 psi | 58% | 2562 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 36,593 psi | 61% | 2582 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 42,018 psi | 70% | 2720 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 44,106 psi | 73% | 2667 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,656 psi | 73% | 2690 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,747 psi | 79% | 2713 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 43% | 1588 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,574 psi | 82% | 2753 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,063 psi | 73% | 2674 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,552 psi | 66% | 2684 fps | 97.4% |
| ReloadSwiss RS 60 | 37.1 gr | 80% | 32,329 psi | 54% | 2546 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,028 psi | 62% | 2641 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,118 psi | 67% | 2710 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 44,947 psi | 75% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,117 psi | 65% | 2559 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 32,227 psi | 54% | 2457 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 49,168 psi | 82% | 2759 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,189 psi | 65% | 2579 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,785 psi | 68% | 2631 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,318 psi | 62% | 2543 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 45,049 psi | 75% | 2713 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,620 psi | 56% | 2513 fps | 96% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,148 psi | 70% | 2638 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,698 psi | 68% | 2621 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,641 psi | 71% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,244 psi | 59% | 2434 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,340 psi | 79% | 2687 fps | 95.8% |
| Somchem S321 | <<locked>> | 80% | 47,630 psi | 79% | 2743 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,308 psi | 70% | 2572 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,930 psi | 70% | 2638 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 33,475 psi | 56% | 2474 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 27,354 psi | 45% | 2395 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 48,312 psi | 80% | 2635 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,960 psi | 71% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,348 psi | 64% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,059 psi | 65% | 2552 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,604 psi | 53% | 2408 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 36,869 psi | 61% | 2572 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 44,150 psi | 73% | 2661 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,681 psi | 63% | 2539 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,027 psi | 60% | 2569 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 34,200 psi | 57% | 2598 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,298 psi | 50% | 2385 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,714 psi | 73% | 2707 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 45,905 psi | 76% | 2792 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,132 psi | 67% | 2628 fps | 98.6% |
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 97 powders for .260 Rem. loaded with the .264 | 120gr | Barnes TAC-X. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,982 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,982 fps. Accurate 4350 gives the best case fill at 100 %, and 97 of the 97 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 1:9.5 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 Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .260 Rem. with the .264 | 120gr | Barnes TAC-X 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.