Load Specifications
Load data in caliber .260 Rem. with .264 | 139gr | Brenneke TOG bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Reloder-16.
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 2495 | <<locked>> | 86% | 53,954 psi | 90% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,446 psi | 87% | 2589 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,295 psi | 74% | 2556 fps | 97.8% |
| Accurate 4064 | <<locked>> | 88% | 54,302 psi | 90% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,983 psi | 90% | 2723 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 53,882 psi | 90% | 2657 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 51,967 psi | 86% | 2618 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,054 psi | 86% | 2700 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,098 psi | 88% | 2612 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,114 psi | 90% | 2582 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,795 psi | 89% | 2779 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 52,112 psi | 87% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 52,330 psi | 87% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 51,677 psi | 86% | 2726 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,518 psi | 87% | 2753 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,908 psi | 85% | 2687 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,192 psi | 70% | 2585 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,130 psi | 62% | 2493 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,297 psi | 79% | 2749 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,606 psi | 89% | 2674 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 52,417 psi | 87% | 2651 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 52,460 psi | 87% | 2628 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,418 psi | 90% | 2592 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 52,301 psi | 87% | 2638 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,098 psi | 88% | 2661 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 53,084 psi | 88% | 2720 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 53,664 psi | 89% | 2684 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,418 psi | 90% | 2667 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 51,590 psi | 86% | 2657 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,244 psi | 90% | 2703 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,316 psi | 89% | 2756 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 60% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 52,257 psi | 87% | 2621 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 51,576 psi | 86% | 2605 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 51,271 psi | 85% | 2598 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,331 psi | 90% | 2628 fps | 98.6% |
| IMR 4350 | <<locked>> | 96% | 52,591 psi | 87% | 2651 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,389 psi | 90% | 2657 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 50,966 psi | 85% | 2664 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 53,650 psi | 89% | 2684 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 53,098 psi | 88% | 2612 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,099 psi | 90% | 2638 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,258 psi | 88% | 2589 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,346 psi | 90% | 2638 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,737 psi | 89% | 2651 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 51,634 psi | 86% | 2641 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,028 psi | 62% | 2421 fps | 95.9% |
| Norma 201 | <<locked>> | 84% | 52,678 psi | 88% | 2605 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,243 psi | 88% | 2605 fps | 100% |
| Norma 203B | <<locked>> | 86% | 51,590 psi | 86% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,026 psi | 88% | 2700 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 46,992 psi | 78% | 2703 fps | 97.4% |
| Norma URP | <<locked>> | 96% | 52,823 psi | 88% | 2707 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 52,083 psi | 87% | 2667 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 51,445 psi | 85% | 2703 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 53,084 psi | 88% | 2631 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,663 psi | 87% | 2644 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,448 psi | 61% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,229 psi | 88% | 2648 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,649 psi | 87% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,315 psi | 87% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,577 psi | 89% | 2746 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,692 psi | 88% | 2769 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 53,954 psi | 90% | 2585 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,519 psi | 89% | 2608 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 52,243 psi | 87% | 2644 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 53,766 psi | 89% | 2674 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,792 psi | 83% | 2674 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 52,460 psi | 87% | 2628 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,737 psi | 89% | 2651 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,099 psi | 90% | 2638 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,346 psi | 90% | 2638 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 51,634 psi | 86% | 2641 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,824 psi | 89% | 2700 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 51,619 psi | 86% | 2612 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 52,286 psi | 87% | 2631 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,360 psi | 90% | 2546 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,375 psi | 90% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,838 psi | 89% | 2608 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,313 psi | 82% | 2667 fps | 96.5% |
| Somchem S335 | <<locked>> | 84% | 53,461 psi | 89% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 51,242 psi | 85% | 2602 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 52,707 psi | 88% | 2641 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 50,981 psi | 85% | 2710 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,502 psi | 84% | 2654 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 51,198 psi | 85% | 2487 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,403 psi | 89% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,853 psi | 89% | 2585 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,998 psi | 90% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 51,793 psi | 86% | 2654 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 53,447 psi | 89% | 2612 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 51,953 psi | 86% | 2585 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,317 psi | 90% | 2710 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,775 psi | 78% | 2657 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 51,547 psi | 86% | 2631 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,272 psi | 89% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,084 psi | 88% | 2720 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,579 psi | 62% | 2608 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,141 psi | 87% | 2638 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 2495 | <<locked>> | 80% | 44,338 psi | 74% | 2451 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,250 psi | 72% | 2434 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 36,158 psi | 60% | 2405 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 41,974 psi | 70% | 2451 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,140 psi | 52% | 2303 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 47,688 psi | 79% | 2562 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,625 psi | 67% | 2425 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 45,556 psi | 76% | 2589 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,777 psi | 83% | 2562 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,879 psi | 85% | 2543 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,729 psi | 73% | 2608 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,364 psi | 67% | 2444 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,352 psi | 72% | 2507 fps | 99.3% |
| Alliant Reloder-16 | 34 gr | 80% | 31,459 psi | 52% | 2313 fps | 95.8% |
| Alliant Reloder-17 | 36.6 gr | 80% | 34,969 psi | 58% | 2431 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,020 psi | 75% | 2585 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,369 psi | 45% | 2231 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,824 psi | 58% | 2434 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,315 psi | 55% | 2451 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,195 psi | 78% | 2575 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 40,350 psi | 67% | 2454 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 41,060 psi | 68% | 2431 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,416 psi | 85% | 2549 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,037 psi | 81% | 2592 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,104 psi | 68% | 2461 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 38,101 psi | 63% | 2454 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 44,164 psi | 73% | 2523 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 48,167 psi | 80% | 2572 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,964 psi | 48% | 2224 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,454 psi | 74% | 2556 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 40,074 psi | 67% | 2516 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 45% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,180 psi | 77% | 2526 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 48,167 psi | 80% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,685 psi | 71% | 2457 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,875 psi | 75% | 2474 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 41,249 psi | 69% | 2457 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,842 psi | 66% | 2408 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 30,371 psi | 50% | 2267 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 44,411 psi | 74% | 2536 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 49,777 psi | 83% | 2562 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,369 psi | 79% | 2543 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,195 psi | 78% | 2493 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 42,496 psi | 71% | 2454 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,998 psi | 58% | 2313 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 37,608 psi | 62% | 2385 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 34,519 psi | 57% | 2369 fps | 95% |
| Norma 201 | <<locked>> | 80% | 46,572 psi | 77% | 2513 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,007 psi | 78% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,699 psi | 71% | 2497 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 46,369 psi | 77% | 2589 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 41,162 psi | 68% | 2592 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 31,430 psi | 52% | 2300 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 42,453 psi | 71% | 2513 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 37,188 psi | 62% | 2441 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 49,530 psi | 82% | 2579 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,414 psi | 82% | 2598 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 45% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,234 psi | 69% | 2441 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,934 psi | 76% | 2608 fps | 99.6% |
| ReloadSwiss RS 60 | 36.6 gr | 80% | 37,188 psi | 62% | 2490 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,922 psi | 51% | 2316 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 35,114 psi | 58% | 2428 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 50,981 psi | 85% | 2546 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,353 psi | 74% | 2467 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 37,884 psi | 63% | 2402 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 50,328 psi | 84% | 2621 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 96% | 43,743 psi | 73% | 2569 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 84% | 41,060 psi | 68% | 2431 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,998 psi | 58% | 2313 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,369 psi | 79% | 2543 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,496 psi | 71% | 2454 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 37,608 psi | 62% | 2385 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,725 psi | 64% | 2448 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,008 psi | 80% | 2556 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,006 psi | 76% | 2533 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,892 psi | 80% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,059 psi | 67% | 2339 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 38,943 psi | 65% | 2359 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 43,410 psi | 72% | 2566 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,384 psi | 79% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,022 psi | 80% | 2556 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 38,493 psi | 64% | 2402 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 28,210 psi | 47% | 2260 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 41,727 psi | 69% | 2503 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 48,283 psi | 80% | 2448 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,251 psi | 74% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,599 psi | 74% | 2454 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,695 psi | 61% | 2343 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 32,793 psi | 54% | 2306 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 80% | 50,038 psi | 83% | 2562 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,149 psi | 72% | 2451 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,416 psi | 54% | 2310 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 29,515 psi | 49% | 2303 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,532 psi | 54% | 2283 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 49,850 psi | 83% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 38,101 psi | 63% | 2454 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,296 psi | 45% | 2306 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,774 psi | 76% | 2543 fps | 99.9% |
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 115 powders for .260 Rem. loaded with the .264 | 139gr | Brenneke TOG. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,779 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 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 139.0 gr projectile in 0.264" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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 Reloder-17, ReloadSwiss RS 60, Alliant Reloder-16 rank at the top here: for .260 Rem. with the .264 | 139gr | Brenneke TOG they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.