Load Specifications
Load data in caliber .260 Rem. with .267 | 115gr | AERO SB,- smax:16.90 bullet and 97 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 52,634 psi | 87% | 2789 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 50,952 psi | 85% | 2812 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,592 psi | 89% | 2851 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 52,779 psi | 88% | 2874 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 53,708 psi | 89% | 2897 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,748 psi | 83% | 2910 fps | 98.4% |
| ADI AR 2206H | <<locked>> | 88% | 51,822 psi | 86% | 2877 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 94% | 52,852 psi | 88% | 2874 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,433 psi | 90% | 2887 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 51,039 psi | 85% | 2818 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 52,533 psi | 87% | 2940 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 51,459 psi | 85% | 2989 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 52,533 psi | 87% | 2900 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 52,562 psi | 87% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,243 psi | 88% | 2923 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,631 psi | 81% | 2913 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,127 psi | 88% | 3018 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 51,851 psi | 86% | 2894 fps | 98.8% |
| Bofors RP3 | <<locked>> | 94% | 52,692 psi | 88% | 2913 fps | 99.9% |
| Bofors RP7 | <<locked>> | 98% | 53,432 psi | 89% | 2874 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,287 psi | 89% | 2825 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,388 psi | 89% | 2913 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 51,779 psi | 86% | 2956 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 82% | 51,822 psi | 86% | 2838 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 52,852 psi | 88% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,954 psi | 90% | 2920 fps | 98.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,185 psi | 88% | 2963 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 88% | 52,301 psi | 87% | 2890 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,628 psi | 74% | 2789 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 51,532 psi | 86% | 2923 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 58% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,983 psi | 90% | 2900 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 51,706 psi | 86% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 52,475 psi | 87% | 2861 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,011 psi | 88% | 2838 fps | 96.3% |
| IMR 4198 | <<locked>> | 82% | 52,953 psi | 88% | 2759 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,272 psi | 87% | 2854 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,282 psi | 79% | 2848 fps | 98.1% |
| IMR 4895 | <<locked>> | 90% | 51,082 psi | 85% | 2900 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 88% | 54,433 psi | 90% | 2887 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 50,792 psi | 84% | 2818 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 50,966 psi | 85% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 52,156 psi | 87% | 2815 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 51,953 psi | 86% | 2861 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,317 psi | 90% | 2900 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,735 psi | 86% | 2877 fps | 96.4% |
| Norma 201 | <<locked>> | 90% | 54,085 psi | 90% | 2881 fps | 100% |
| Norma 202 | <<locked>> | 88% | 51,082 psi | 85% | 2835 fps | 100% |
| Norma 203B | <<locked>> | 92% | 52,417 psi | 87% | 2910 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 49,342 psi | 82% | 2900 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 92% | 52,837 psi | 88% | 2933 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,544 psi | 81% | 2890 fps | 96.5% |
| Ramshot TAC | <<locked>> | 86% | 51,590 psi | 86% | 2848 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,720 psi | 84% | 2864 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,388 psi | 87% | 2841 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,230 psi | 59% | 1811 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,128 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 51,300 psi | 85% | 2851 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,359 psi | 89% | 2989 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,040 psi | 88% | 3025 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,168 psi | 82% | 2923 fps | 98.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,154 psi | 83% | 2953 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 86% | 51,547 psi | 86% | 2815 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,157 psi | 90% | 2871 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 52,547 psi | 87% | 2904 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 98% | 53,432 psi | 89% | 2874 fps | 95.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,317 psi | 90% | 2900 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 50,966 psi | 85% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 51,953 psi | 86% | 2861 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,735 psi | 86% | 2877 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,070 psi | 90% | 2844 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 51,097 psi | 85% | 2913 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,679 psi | 89% | 2825 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,997 psi | 88% | 2874 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,896 psi | 90% | 2907 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 52,837 psi | 88% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,446 psi | 87% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 51,605 psi | 86% | 2799 fps | 96% |
| Somchem S321 | <<locked>> | 84% | 52,257 psi | 87% | 2871 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 51,779 psi | 86% | 2776 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 52,924 psi | 88% | 2874 fps | 99.5% |
| Somchem S355 | <<locked>> | 96% | 53,011 psi | 88% | 2900 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,772 psi | 73% | 2844 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 84% | 52,460 psi | 87% | 2746 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,011 psi | 88% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,751 psi | 89% | 2844 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 51,721 psi | 86% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 51,372 psi | 85% | 2835 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,141 psi | 87% | 2904 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 86% | 51,706 psi | 86% | 2838 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 53,417 psi | 89% | 2861 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,894 psi | 85% | 2904 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,492 psi | 61% | 2700 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,113 psi | 88% | 2887 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 51,010 psi | 85% | 2881 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,185 psi | 88% | 2963 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,403 psi | 89% | 2910 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% | 43,482 psi | 72% | 2648 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,601 psi | 79% | 2756 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,723 psi | 59% | 2552 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,598 psi | 71% | 2707 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 33,837 psi | 56% | 2539 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 37,275 psi | 62% | 2671 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 40,306 psi | 67% | 2664 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 36,492 psi | 61% | 2562 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,424 psi | 70% | 2680 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 41,698 psi | 69% | 2674 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,400 psi | 82% | 2887 fps | 99.5% |
| Alliant Power Pro 2000-MR | 37.1 gr | 80% | 36,201 psi | 60% | 2664 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,373 psi | 55% | 2523 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,458 psi | 82% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,114 psi | 60% | 2589 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,855 psi | 63% | 2684 fps | 95.5% |
| Alliant Reloder-17 | 38.4 gr | 84% | 32,924 psi | 55% | 2589 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,204 psi | 65% | 2657 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 32,460 psi | 54% | 2516 fps | 96.3% |
| Bofors RP7 | <<locked>> | 96% | 50,009 psi | 83% | 2815 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,164 psi | 73% | 2674 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,509 psi | 67% | 2690 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,788 psi | 74% | 2831 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 48,385 psi | 80% | 2785 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,110 psi | 82% | 2805 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 38,682 psi | 64% | 2638 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 98% | 49,719 psi | 83% | 2904 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 40,625 psi | 67% | 2677 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,358 psi | 54% | 2520 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,376 psi | 60% | 2635 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 43% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,885 psi | 65% | 2625 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 39,769 psi | 66% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,737 psi | 59% | 2539 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,647 psi | 82% | 2782 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 50,169 psi | 83% | 2720 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,327 psi | 82% | 2805 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 36,027 psi | 60% | 2625 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 36,956 psi | 61% | 2621 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 80% | 42,424 psi | 70% | 2680 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 47,456 psi | 79% | 2762 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,609 psi | 64% | 2638 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 40,712 psi | 68% | 2605 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 35,433 psi | 59% | 2546 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 42,351 psi | 70% | 2687 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 48,414 psi | 80% | 2818 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 39,218 psi | 65% | 2615 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 39,523 psi | 66% | 2631 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,462 psi | 59% | 2579 fps | 96.2% |
| Norma URP | <<locked>> | 92% | 37,710 psi | 63% | 2671 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 34,780 psi | 58% | 2582 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 98% | 45,440 psi | 75% | 2831 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 42,264 psi | 70% | 2674 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,292 psi | 69% | 2690 fps | 97.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,774 psi | 76% | 2726 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,063 psi | 43% | 1617 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,398 psi | 79% | 2766 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,962 psi | 75% | 2736 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,333 psi | 62% | 2684 fps | 96.1% |
| ReloadSwiss RS 60 | 36.6 gr | 80% | 30,763 psi | 51% | 2539 fps | 97.2% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,929 psi | 66% | 2746 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,698 psi | 68% | 2759 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,859 psi | 71% | 2667 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,231 psi | 62% | 2566 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 30,632 psi | 51% | 2461 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 96% | 50,009 psi | 83% | 2815 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,351 psi | 70% | 2687 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,609 psi | 64% | 2638 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 35,433 psi | 59% | 2546 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 48,414 psi | 80% | 2818 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,183 psi | 83% | 2782 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,127 psi | 57% | 2569 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,517 psi | 84% | 2776 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,161 psi | 67% | 2641 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,783 psi | 64% | 2628 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,031 psi | 68% | 2585 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,794 psi | 56% | 2448 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,109 psi | 80% | 2743 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 45,469 psi | 76% | 2756 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 40,408 psi | 67% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,943 psi | 66% | 2644 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 31,705 psi | 53% | 2474 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 29,443 psi | 49% | 2500 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 46,572 psi | 77% | 2661 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,292 psi | 69% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,564 psi | 61% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,405 psi | 62% | 2569 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 30,139 psi | 50% | 2415 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 90% | 37,188 psi | 62% | 2621 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 42,119 psi | 70% | 2671 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 35,853 psi | 60% | 2549 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 39,117 psi | 65% | 2684 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 98% | 34,287 psi | 57% | 2648 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,953 psi | 55% | 2493 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,510 psi | 69% | 2717 fps | 99.4% |
| Winchester 760 | <<locked>> | 96% | 46,804 psi | 78% | 2851 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,840 psi | 63% | 2625 fps | 97.5% |
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 97 powders for .260 Rem. loaded with the .267 | 115gr | AERO SB,- smax:16.90. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,768 fps to 3,025 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 115.0 gr projectile in 0.267" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon H414 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 .267 | 115gr | AERO SB,- smax:16.90 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.