Load Specifications
Load data in caliber .260 Rem. with .264 | 130gr | CutEdge MTH bullet and 95 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, 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.
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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% | 53,229 psi | 88% | 2625 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 51,372 psi | 85% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 53,345 psi | 89% | 2710 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,169 psi | 85% | 2644 fps | 96.5% |
| Accurate 4064 | <<locked>> | 90% | 51,343 psi | 85% | 2690 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 51,198 psi | 85% | 2769 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 52,388 psi | 87% | 2723 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 53,838 psi | 89% | 2726 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 51,735 psi | 86% | 2677 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,127 psi | 87% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 51,822 psi | 86% | 2831 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,505 psi | 89% | 2746 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,172 psi | 90% | 2769 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,866 psi | 88% | 2825 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,969 psi | 90% | 2864 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,434 psi | 62% | 2566 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,568 psi | 69% | 2713 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,112 psi | 87% | 2736 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 53,606 psi | 89% | 2756 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,302 psi | 90% | 2733 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,316 psi | 89% | 2661 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,070 psi | 90% | 2753 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,620 psi | 87% | 2799 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 51,401 psi | 85% | 2720 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 96% | 50,894 psi | 85% | 2766 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 94% | 51,880 psi | 86% | 2733 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 86% | 52,881 psi | 88% | 2730 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,907 psi | 81% | 2703 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 52,417 psi | 87% | 2766 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 51,488 psi | 86% | 2799 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 59% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 50,937 psi | 85% | 2687 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 52,895 psi | 88% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,026 psi | 88% | 2707 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,345 psi | 89% | 2690 fps | 97.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,389 psi | 90% | 2756 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 52,953 psi | 88% | 2713 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,663 psi | 86% | 2759 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 51,924 psi | 86% | 2743 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 51,735 psi | 86% | 2677 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,054 psi | 86% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,214 psi | 87% | 2654 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 52,678 psi | 88% | 2703 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 51,837 psi | 86% | 2703 fps | 98.6% |
| Lovex S070 | <<locked>> | 98% | 52,634 psi | 87% | 2736 fps | 97.8% |
| Norma 201 | <<locked>> | 86% | 51,024 psi | 85% | 2667 fps | 100% |
| Norma 202 | <<locked>> | 86% | 51,619 psi | 86% | 2671 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,345 psi | 89% | 2756 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 54,186 psi | 90% | 2815 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 53,867 psi | 89% | 2782 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,837 psi | 88% | 2805 fps | 98.5% |
| Ramshot TAC | <<locked>> | 84% | 51,866 psi | 86% | 2694 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,169 psi | 85% | 2710 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,504 psi | 87% | 2677 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,737 psi | 59% | 1703 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,433 psi | 90% | 2707 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 51,851 psi | 86% | 2703 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,317 psi | 90% | 2828 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,737 psi | 89% | 2861 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 50,937 psi | 85% | 2792 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 50,879 psi | 85% | 2815 fps | 99% |
| Rottweil R 901 | <<locked>> | 84% | 52,141 psi | 87% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 51,503 psi | 86% | 2667 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 53,476 psi | 89% | 2749 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,302 psi | 90% | 2733 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 51,837 psi | 86% | 2703 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,054 psi | 86% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 52,678 psi | 88% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 52,634 psi | 87% | 2736 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,083 psi | 87% | 2762 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,548 psi | 89% | 2723 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,317 psi | 90% | 2746 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 52,779 psi | 88% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,258 psi | 88% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,199 psi | 87% | 2657 fps | 97.5% |
| Somchem S321 | <<locked>> | 82% | 52,605 psi | 87% | 2707 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,083 psi | 87% | 2612 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,142 psi | 88% | 2713 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,085 psi | 90% | 2749 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,356 psi | 80% | 2762 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 52,692 psi | 88% | 2579 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,098 psi | 88% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 51,590 psi | 86% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,388 psi | 87% | 2654 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 51,996 psi | 86% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,272 psi | 89% | 2759 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 52,098 psi | 87% | 2677 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,925 psi | 90% | 2697 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 52,127 psi | 87% | 2762 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,712 psi | 68% | 2638 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,780 psi | 89% | 2743 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 51,924 psi | 86% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 50,894 psi | 85% | 2766 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,272 psi | 55% | 2552 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,070 psi | 90% | 2753 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% | 47,050 psi | 78% | 2539 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,117 psi | 65% | 2457 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,456 psi | 77% | 2608 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,877 psi | 80% | 2589 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 37,028 psi | 62% | 2451 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,257 psi | 55% | 2431 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,424 psi | 72% | 2572 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 36,941 psi | 61% | 2428 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,571 psi | 76% | 2582 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 45,788 psi | 76% | 2566 fps | 100% |
| Alliant Power Pro 2000-MR | 36.4 gr | 80% | 39,320 psi | 65% | 2595 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,245 psi | 60% | 2444 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,131 psi | 65% | 2507 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,127 psi | 57% | 2454 fps | 95.8% |
| Alliant Reloder-17 | 35.9 gr | 80% | 31,372 psi | 52% | 2411 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,240 psi | 49% | 2356 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,129 psi | 60% | 2589 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,641 psi | 71% | 2575 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 35,563 psi | 59% | 2441 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 44,643 psi | 74% | 2572 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,442 psi | 79% | 2572 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,106 psi | 73% | 2598 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,095 psi | 82% | 2743 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 36,637 psi | 61% | 2448 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 41,684 psi | 69% | 2602 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 92% | 48,472 psi | 81% | 2677 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 43,845 psi | 73% | 2582 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,124 psi | 48% | 2300 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,726 psi | 66% | 2552 fps | 99.3% |
| Hodgdon Superformance | 43.6 gr | 92% | 44,527 psi | 74% | 2674 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,121 psi | 43% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,192 psi | 70% | 2536 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 43,279 psi | 72% | 2572 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,783 psi | 64% | 2461 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,048 psi | 73% | 2533 fps | 95.6% |
| IMR 4350 | <<locked>> | 94% | 44,817 psi | 74% | 2598 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 43,758 psi | 73% | 2556 fps | 95.5% |
| IMR 4831 | <<locked>> | 86% | 32,489 psi | 54% | 2395 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 40,103 psi | 67% | 2536 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 45,571 psi | 76% | 2582 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 42,192 psi | 70% | 2546 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,410 psi | 72% | 2507 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 38,290 psi | 64% | 2457 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 37,898 psi | 63% | 2451 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 40,785 psi | 68% | 2526 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 42,206 psi | 70% | 2520 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 42,641 psi | 71% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,479 psi | 64% | 2497 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 33,881 psi | 56% | 2438 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 37,956 psi | 63% | 2507 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 40,611 psi | 67% | 2589 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 45,527 psi | 76% | 2589 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,788 psi | 74% | 2602 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,197 psi | 82% | 2628 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,339 psi | 44% | 1516 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,894 psi | 85% | 2654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,682 psi | 66% | 2487 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,046 psi | 68% | 2605 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,446 psi | 56% | 2480 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,301 psi | 55% | 2454 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 35,955 psi | 60% | 2513 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 46,253 psi | 77% | 2562 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,393 psi | 67% | 2480 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,547 psi | 56% | 2392 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 44,643 psi | 74% | 2572 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,898 psi | 63% | 2451 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,192 psi | 70% | 2546 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,290 psi | 64% | 2457 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 40,785 psi | 68% | 2526 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,751 psi | 58% | 2441 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,598 psi | 72% | 2559 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,930 psi | 70% | 2543 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,845 psi | 73% | 2480 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,332 psi | 60% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 42,598 psi | 71% | 2500 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 49,211 psi | 82% | 2657 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,308 psi | 72% | 2477 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,395 psi | 72% | 2559 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 34,447 psi | 57% | 2398 fps | 97.7% |
| Somchem S365 | <<locked>> | 82% | 26,455 psi | 44% | 2277 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 49,574 psi | 82% | 2536 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,208 psi | 73% | 2474 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,682 psi | 66% | 2457 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,422 psi | 67% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,808 psi | 55% | 2339 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 33,330 psi | 55% | 2392 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 45,397 psi | 75% | 2572 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 38,827 psi | 65% | 2457 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 34,824 psi | 58% | 2441 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 31,038 psi | 52% | 2421 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,211 psi | 49% | 2267 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 45,223 psi | 75% | 2618 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 41,684 psi | 69% | 2602 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,327 psi | 49% | 2431 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,191 psi | 68% | 2543 fps | 99.2% |
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 112 powders for .260 Rem. loaded with the .264 | 130gr | CutEdge MTH. Alliant Reloder-17 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,864 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-16 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .260 Rem. with the .264 | 130gr | CutEdge MTH they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.