Load Specifications
Load data in caliber .260 Rem. with .264 | 125gr | SUS-TAC HPT 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% | 52,634 psi | 87% | 2657 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,244 psi | 90% | 2726 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,012 psi | 90% | 2720 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,344 psi | 87% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,809 psi | 89% | 2717 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 53,795 psi | 89% | 2762 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,113 psi | 88% | 2838 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 51,358 psi | 85% | 2743 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 52,388 psi | 87% | 2743 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,809 psi | 89% | 2749 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 50,778 psi | 84% | 2680 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,215 psi | 90% | 2910 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 52,069 psi | 87% | 2766 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 52,678 psi | 88% | 2785 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,401 psi | 85% | 2841 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,388 psi | 87% | 2881 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,593 psi | 61% | 2579 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,625 psi | 67% | 2723 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 51,024 psi | 85% | 2759 fps | 99.1% |
| Bofors RP3 | <<locked>> | 92% | 52,591 psi | 87% | 2782 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,982 psi | 88% | 2746 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 52,707 psi | 88% | 2690 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,011 psi | 88% | 2779 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 51,285 psi | 85% | 2818 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 92% | 53,635 psi | 89% | 2792 fps | 99% |
| Hodgdon H414 | <<locked>> | 98% | 52,939 psi | 88% | 2838 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 96% | 53,940 psi | 90% | 2799 fps | 96% |
| Hodgdon H4895 | <<locked>> | 86% | 51,822 psi | 86% | 2756 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,805 psi | 79% | 2723 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,418 psi | 90% | 2838 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,838 psi | 89% | 2871 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 59% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,388 psi | 89% | 2762 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 51,590 psi | 86% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 51,953 psi | 86% | 2730 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 52,025 psi | 86% | 2703 fps | 96.9% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,968 psi | 88% | 2769 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 51,576 psi | 86% | 2726 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,604 psi | 84% | 2782 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 54,012 psi | 90% | 2815 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 53,809 psi | 89% | 2749 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,157 psi | 90% | 2736 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,273 psi | 90% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 51,242 psi | 85% | 2677 fps | 99.7% |
| Lovex S062 | <<locked>> | 90% | 51,735 psi | 86% | 2726 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,099 psi | 90% | 2772 fps | 98.5% |
| Lovex S070 | <<locked>> | 98% | 51,372 psi | 85% | 2749 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 53,708 psi | 89% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,143 psi | 90% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 90% | 51,924 psi | 86% | 2772 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 52,591 psi | 87% | 2828 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 52,315 psi | 87% | 2799 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,372 psi | 85% | 2818 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 54,346 psi | 90% | 2769 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,592 psi | 89% | 2785 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 51,532 psi | 86% | 2700 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,766 psi | 59% | 1729 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,330 psi | 89% | 2730 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,012 psi | 90% | 2772 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,968 psi | 88% | 2851 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 52,156 psi | 87% | 2881 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,620 psi | 87% | 2858 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,127 psi | 88% | 2887 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 84% | 51,430 psi | 85% | 2680 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,172 psi | 90% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 52,475 psi | 87% | 2772 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 52,982 psi | 88% | 2746 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,099 psi | 90% | 2772 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,273 psi | 90% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 51,735 psi | 86% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 51,372 psi | 85% | 2749 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,085 psi | 90% | 2831 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,576 psi | 87% | 2743 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,214 psi | 88% | 2769 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 52,199 psi | 87% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 52,141 psi | 87% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,966 psi | 85% | 2671 fps | 96.6% |
| Somchem S321 | <<locked>> | 82% | 51,634 psi | 86% | 2733 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 51,213 psi | 85% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 52,098 psi | 87% | 2736 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 52,707 psi | 88% | 2769 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,862 psi | 78% | 2779 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 52,025 psi | 86% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 52,373 psi | 87% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,722 psi | 89% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 51,300 psi | 85% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,259 psi | 90% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 51,677 psi | 86% | 2776 fps | 99% |
| Vihtavuori N530 | <<locked>> | 86% | 54,302 psi | 90% | 2749 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 52,518 psi | 87% | 2720 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,925 psi | 90% | 2828 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,523 psi | 66% | 2651 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 52,069 psi | 87% | 2756 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,925 psi | 90% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,939 psi | 88% | 2838 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,706 psi | 54% | 2556 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,939 psi | 88% | 2776 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% | 46,195 psi | 77% | 2566 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,662 psi | 84% | 2677 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,059 psi | 65% | 2493 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,585 psi | 76% | 2631 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,328 psi | 84% | 2661 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 36,941 psi | 61% | 2484 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,172 psi | 58% | 2510 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 42,641 psi | 71% | 2592 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 36,245 psi | 60% | 2444 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,686 psi | 74% | 2602 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 44,628 psi | 74% | 2592 fps | 100% |
| Alliant Power Pro 2000-MR | 35.9 gr | 80% | 38,566 psi | 64% | 2612 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,853 psi | 60% | 2470 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,406 psi | 64% | 2526 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,636 psi | 59% | 2520 fps | 95.6% |
| Alliant Reloder-17 | 35.4 gr | 80% | 30,937 psi | 51% | 2428 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,458 psi | 51% | 2415 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,898 psi | 63% | 2657 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,785 psi | 69% | 2595 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 35,331 psi | 59% | 2470 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 46,630 psi | 77% | 2641 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,557 psi | 77% | 2592 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,250 psi | 72% | 2621 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,456 psi | 79% | 2756 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 80% | 36,042 psi | 60% | 2467 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 92% | 43,424 psi | 72% | 2671 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 50,415 psi | 84% | 2743 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 42,975 psi | 71% | 2602 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,792 psi | 51% | 2372 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,827 psi | 65% | 2572 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 94% | 46,528 psi | 77% | 2743 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,353 psi | 44% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,307 psi | 69% | 2556 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 42,540 psi | 71% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,029 psi | 63% | 2477 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,919 psi | 76% | 2598 fps | 95.5% |
| IMR 4350 | <<locked>> | 96% | 46,688 psi | 78% | 2664 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,905 psi | 76% | 2628 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 33,997 psi | 56% | 2464 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 39,305 psi | 65% | 2556 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 44,686 psi | 74% | 2602 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 50,618 psi | 84% | 2687 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,423 psi | 69% | 2572 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,946 psi | 71% | 2533 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 37,956 psi | 63% | 2484 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 39,929 psi | 66% | 2523 fps | 95.4% |
| Lovex S070 | <<locked>> | 94% | 45,585 psi | 76% | 2651 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 41,916 psi | 70% | 2549 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 42,177 psi | 70% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,768 psi | 63% | 2513 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 35,679 psi | 59% | 2513 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 37,217 psi | 62% | 2526 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 42,337 psi | 70% | 2657 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 44,411 psi | 74% | 2602 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,918 psi | 73% | 2625 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,327 psi | 80% | 2651 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,600 psi | 44% | 1542 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,227 psi | 83% | 2684 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,756 psi | 69% | 2559 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,016 psi | 66% | 2621 fps | 97.7% |
| ReloadSwiss RS 60 | 35.4 gr | 80% | 32,909 psi | 55% | 2493 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,333 psi | 62% | 2579 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,495 psi | 67% | 2648 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 45,658 psi | 76% | 2589 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,813 psi | 66% | 2500 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 33,054 psi | 55% | 2408 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 46,630 psi | 77% | 2641 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,929 psi | 66% | 2523 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,423 psi | 69% | 2572 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,956 psi | 63% | 2484 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 45,585 psi | 76% | 2651 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,113 psi | 57% | 2457 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,888 psi | 71% | 2579 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,147 psi | 68% | 2559 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,337 psi | 72% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,940 psi | 60% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,599 psi | 74% | 2569 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 48,327 psi | 80% | 2680 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,931 psi | 71% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,540 psi | 71% | 2579 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 34,200 psi | 57% | 2421 fps | 97.1% |
| Somchem S365 | <<locked>> | 82% | 26,397 psi | 44% | 2303 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 48,965 psi | 81% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,613 psi | 72% | 2503 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,146 psi | 65% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,653 psi | 66% | 2493 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,271 psi | 54% | 2359 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 34,853 psi | 58% | 2457 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 44,831 psi | 74% | 2598 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,189 psi | 63% | 2480 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,695 psi | 61% | 2516 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 94% | 32,532 psi | 54% | 2490 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,835 psi | 51% | 2336 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 44,237 psi | 73% | 2644 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 43,424 psi | 72% | 2671 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,618 psi | 51% | 2490 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,379 psi | 67% | 2562 fps | 98.7% |
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 | 125gr | SUS-TAC HPT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,910 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,910 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 54–90 %, 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 | SUS-TAC HPT 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.