Load Specifications
Load data in caliber .260 Rem. with .264 | 127gr | RWS Kegelspitz bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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>> | 82% | 53,780 psi | 89% | 2680 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 52,649 psi | 87% | 2703 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,215 psi | 90% | 2769 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,576 psi | 86% | 2703 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,149 psi | 72% | 2657 fps | 96.9% |
| Accurate 4064 | <<locked>> | 88% | 52,779 psi | 88% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,634 psi | 87% | 2838 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 53,069 psi | 88% | 2782 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 53,925 psi | 90% | 2782 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,112 psi | 87% | 2736 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,750 psi | 88% | 2707 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,576 psi | 87% | 2897 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 50,560 psi | 84% | 2808 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,273 psi | 90% | 2808 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 51,329 psi | 85% | 2776 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 53,606 psi | 89% | 2890 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 51,256 psi | 85% | 2871 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,031 psi | 68% | 2687 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,253 psi | 77% | 2858 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,591 psi | 87% | 2792 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 51,430 psi | 85% | 2772 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 51,517 psi | 86% | 2743 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,592 psi | 89% | 2717 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 51,184 psi | 85% | 2759 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 52,112 psi | 87% | 2782 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 51,793 psi | 86% | 2831 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 52,359 psi | 87% | 2795 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 53,621 psi | 89% | 2792 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,447 psi | 89% | 2818 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,127 psi | 88% | 2825 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,156 psi | 87% | 2867 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 59% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 51,503 psi | 86% | 2746 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,751 psi | 89% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,417 psi | 89% | 2766 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,330 psi | 89% | 2746 fps | 97.9% |
| IMR 4350 | <<locked>> | 96% | 51,924 psi | 86% | 2772 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,388 psi | 89% | 2776 fps | 97.9% |
| IMR 4831 | <<locked>> | 98% | 53,069 psi | 88% | 2828 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 52,620 psi | 87% | 2805 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 52,112 psi | 87% | 2736 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,924 psi | 88% | 2762 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,373 psi | 87% | 2710 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 53,403 psi | 89% | 2762 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,634 psi | 87% | 2766 fps | 98.9% |
| Lovex S070 | <<locked>> | 96% | 53,606 psi | 89% | 2802 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 52,040 psi | 86% | 2733 fps | 100% |
| Norma 202 | <<locked>> | 84% | 52,504 psi | 87% | 2733 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,824 psi | 89% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 96% | 51,996 psi | 86% | 2812 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 45,934 psi | 76% | 2808 fps | 96.4% |
| Norma URP | <<locked>> | 96% | 51,692 psi | 86% | 2825 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 86% | 50,937 psi | 85% | 2785 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 53,998 psi | 90% | 2874 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 51,967 psi | 86% | 2749 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 51,909 psi | 86% | 2769 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,303 psi | 60% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,547 psi | 87% | 2766 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 51,416 psi | 85% | 2835 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 51,213 psi | 85% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,228 psi | 87% | 2858 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 51,721 psi | 86% | 2884 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 52,924 psi | 88% | 2710 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,460 psi | 87% | 2730 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 51,314 psi | 85% | 2766 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 51,517 psi | 86% | 2743 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,634 psi | 87% | 2766 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,924 psi | 88% | 2762 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,403 psi | 89% | 2762 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,606 psi | 89% | 2802 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,866 psi | 88% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,114 psi | 90% | 2782 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 51,271 psi | 85% | 2749 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,214 psi | 88% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,505 psi | 89% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,866 psi | 88% | 2720 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 52,852 psi | 88% | 2671 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,621 psi | 89% | 2772 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 51,488 psi | 86% | 2759 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,330 psi | 89% | 2881 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,284 psi | 82% | 2759 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 53,548 psi | 89% | 2654 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 52,388 psi | 87% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,982 psi | 88% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,895 psi | 88% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,114 psi | 90% | 2822 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 52,388 psi | 87% | 2733 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,404 psi | 90% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,316 psi | 89% | 2828 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,295 psi | 75% | 2762 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,346 psi | 90% | 2802 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,214 psi | 87% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 52,185 psi | 87% | 2838 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,796 psi | 61% | 2700 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 51,300 psi | 85% | 2762 fps | 100% |
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% | 50,865 psi | 85% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,642 psi | 73% | 2572 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,517 psi | 84% | 2717 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,295 psi | 75% | 2595 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 37,724 psi | 63% | 2552 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 41,249 psi | 69% | 2569 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,532 psi | 54% | 2448 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 46,920 psi | 78% | 2680 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,827 psi | 66% | 2533 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,994 psi | 81% | 2684 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,748 psi | 83% | 2664 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,569 psi | 71% | 2713 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 47,500 psi | 79% | 2753 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,697 psi | 66% | 2556 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,569 psi | 71% | 2621 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,750 psi | 54% | 2461 fps | 95.4% |
| Alliant Reloder-17 | 38.5 gr | 80% | 34,098 psi | 57% | 2526 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,340 psi | 47% | 2365 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 92% | 34,780 psi | 58% | 2598 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,919 psi | 76% | 2684 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 39,494 psi | 66% | 2562 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 45,542 psi | 76% | 2638 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,459 psi | 84% | 2667 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,776 psi | 79% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,190 psi | 67% | 2566 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 88% | 42,554 psi | 71% | 2664 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 46,325 psi | 77% | 2687 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 47,355 psi | 79% | 2694 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,297 psi | 47% | 2313 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,366 psi | 72% | 2664 fps | 99.7% |
| Hodgdon Superformance | 45.8 gr | 90% | 45,034 psi | 75% | 2736 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,658 psi | 44% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,136 psi | 75% | 2638 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 47,079 psi | 78% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,858 psi | 70% | 2566 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,150 psi | 73% | 2585 fps | 96% |
| IMR 4350 | <<locked>> | 90% | 42,888 psi | 71% | 2608 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,611 psi | 69% | 2562 fps | 95.1% |
| IMR 4831 | <<locked>> | 82% | 31,488 psi | 52% | 2405 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 43,613 psi | 72% | 2651 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 48,994 psi | 81% | 2684 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,282 psi | 77% | 2657 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,688 psi | 78% | 2615 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 41,930 psi | 70% | 2569 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 36,651 psi | 61% | 2464 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 41,916 psi | 70% | 2595 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 45,948 psi | 76% | 2635 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,340 psi | 77% | 2638 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,930 psi | 70% | 2608 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 48,762 psi | 81% | 2756 fps | 95.1% |
| Norma MRP | <<locked>> | 98% | 43,105 psi | 72% | 2753 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 32,909 psi | 55% | 2454 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 41,307 psi | 69% | 2618 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 38,769 psi | 64% | 2595 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 48,646 psi | 81% | 2694 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,515 psi | 81% | 2717 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 45% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,306 psi | 67% | 2543 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,107 psi | 75% | 2726 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,260 psi | 60% | 2592 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,418 psi | 57% | 2516 fps | 95.6% |
| ReloadSwiss RS 70 | 42.1 gr | 86% | 36,854 psi | 61% | 2582 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 49,806 psi | 83% | 2664 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,526 psi | 72% | 2582 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 37,159 psi | 62% | 2507 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 45,542 psi | 76% | 2638 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,651 psi | 61% | 2464 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,282 psi | 77% | 2657 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,930 psi | 70% | 2569 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 41,916 psi | 70% | 2595 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,087 psi | 63% | 2556 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,108 psi | 78% | 2671 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,397 psi | 75% | 2651 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,181 psi | 78% | 2579 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,392 psi | 65% | 2451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,814 psi | 68% | 2510 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 46,833 psi | 78% | 2582 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,746 psi | 78% | 2664 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 37,898 psi | 63% | 2513 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 27,644 psi | 46% | 2349 fps | 96.7% |
| Somchem S385 | <<locked>> | 96% | 43,410 psi | 72% | 2657 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 47,587 psi | 79% | 2572 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,424 psi | 72% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,888 psi | 73% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,056 psi | 60% | 2448 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 34,272 psi | 57% | 2454 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 49,182 psi | 82% | 2684 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,308 psi | 70% | 2566 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,721 psi | 56% | 2454 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 88% | 30,530 psi | 51% | 2444 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,676 psi | 53% | 2372 fps | 97.1% |
| Winchester 748 | <<locked>> | 80% | 49,008 psi | 81% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 42,554 psi | 71% | 2664 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,427 psi | 47% | 2441 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,657 psi | 74% | 2651 fps | 99.7% |
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 95 powders for .260 Rem. loaded with the .264 | 127gr | RWS Kegelspitz. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,897 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 127.0 gr projectile in 0.264" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .260 Rem. with the .264 | 127gr | RWS Kegelspitz 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.