Load Specifications
Load data in caliber .260 Rem. with .264 | 130gr | Sierra Tipped GameKing bullet and 96 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 Hodgdon H414.
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>> | 82% | 51,909 psi | 86% | 2602 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 53,780 psi | 89% | 2671 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,706 psi | 86% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,692 psi | 88% | 2664 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 40,437 psi | 67% | 2562 fps | 96% |
| Accurate 4064 | <<locked>> | 90% | 53,606 psi | 89% | 2713 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,156 psi | 88% | 2792 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 53,983 psi | 90% | 2743 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 51,822 psi | 86% | 2697 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,301 psi | 89% | 2697 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,954 psi | 90% | 2671 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,708 psi | 89% | 2861 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,692 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,315 psi | 87% | 2736 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,346 psi | 90% | 2848 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 51,924 psi | 86% | 2828 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,885 psi | 65% | 2592 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,453 psi | 72% | 2749 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,635 psi | 89% | 2756 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 52,257 psi | 87% | 2733 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 52,301 psi | 87% | 2700 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 82% | 51,808 psi | 86% | 2635 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,272 psi | 87% | 2723 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,230 psi | 90% | 2822 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 53,127 psi | 88% | 2743 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 96% | 52,446 psi | 87% | 2789 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 94% | 53,287 psi | 89% | 2753 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 51,430 psi | 85% | 2707 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,517 psi | 84% | 2723 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,027 psi | 90% | 2789 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 52,953 psi | 88% | 2822 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 59% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,417 psi | 87% | 2707 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 51,053 psi | 85% | 2687 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 51,459 psi | 85% | 2680 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,329 psi | 85% | 2657 fps | 97.4% |
| IMR 4350 | <<locked>> | 98% | 52,663 psi | 87% | 2726 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,360 psi | 90% | 2733 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,809 psi | 89% | 2789 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 53,650 psi | 89% | 2769 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 53,301 psi | 89% | 2697 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 53,592 psi | 89% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,664 psi | 89% | 2674 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 54,433 psi | 90% | 2723 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 53,476 psi | 89% | 2723 fps | 98.8% |
| Lovex S070 | <<locked>> | 98% | 54,259 psi | 90% | 2759 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 52,823 psi | 88% | 2690 fps | 100% |
| Norma 202 | <<locked>> | 86% | 53,316 psi | 89% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 88% | 51,532 psi | 86% | 2726 fps | 99.9% |
| Norma 204 | <<locked>> | 98% | 53,098 psi | 88% | 2772 fps | 95.9% |
| Norma URP | <<locked>> | 98% | 52,170 psi | 87% | 2779 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 51,938 psi | 86% | 2749 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 51,256 psi | 85% | 2779 fps | 98.3% |
| Ramshot TAC | <<locked>> | 84% | 53,316 psi | 89% | 2713 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 52,736 psi | 88% | 2730 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,954 psi | 90% | 2697 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,042 psi | 60% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 53,417 psi | 89% | 2726 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,330 psi | 87% | 2795 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 51,706 psi | 86% | 2831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 52,678 psi | 88% | 2815 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,373 psi | 87% | 2838 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 54,172 psi | 90% | 2677 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,316 psi | 89% | 2687 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 52,141 psi | 87% | 2723 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 52,301 psi | 87% | 2700 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 96% | 53,476 psi | 89% | 2723 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 53,592 psi | 89% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,433 psi | 90% | 2723 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,259 psi | 90% | 2759 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,650 psi | 89% | 2782 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,663 psi | 86% | 2690 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,402 psi | 87% | 2717 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,418 psi | 90% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 51,213 psi | 85% | 2589 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,737 psi | 89% | 2677 fps | 97.8% |
| Somchem S321 | <<locked>> | 82% | 54,244 psi | 90% | 2726 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 53,751 psi | 89% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 51,227 psi | 85% | 2684 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 52,286 psi | 87% | 2720 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,096 psi | 83% | 2782 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 54,288 psi | 90% | 2595 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 51,488 psi | 86% | 2575 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 52,982 psi | 88% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,969 psi | 90% | 2674 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 53,664 psi | 89% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,242 psi | 85% | 2726 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 53,722 psi | 89% | 2697 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 52,040 psi | 86% | 2671 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,824 psi | 89% | 2785 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,540 psi | 71% | 2667 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 51,663 psi | 86% | 2710 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 53,577 psi | 89% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 52,446 psi | 87% | 2789 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,940 psi | 58% | 2598 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 52,127 psi | 87% | 2723 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% | 48,486 psi | 81% | 2552 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,408 psi | 69% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,283 psi | 80% | 2631 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 46,238 psi | 77% | 2559 fps | 95.3% |
| Accurate 3100 | <<locked>> | 98% | 37,927 psi | 63% | 2510 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 39,146 psi | 65% | 2484 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,880 psi | 55% | 2418 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,701 psi | 74% | 2592 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 38,043 psi | 63% | 2448 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,731 psi | 78% | 2598 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 47,210 psi | 78% | 2582 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,756 psi | 68% | 2625 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,826 psi | 63% | 2470 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,437 psi | 67% | 2530 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,228 psi | 55% | 2425 fps | 95.4% |
| Alliant Reloder-17 | 36.1 gr | 80% | 32,518 psi | 54% | 2438 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,703 psi | 48% | 2336 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 94% | 35,244 psi | 59% | 2562 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,135 psi | 73% | 2602 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 37,376 psi | 62% | 2474 fps | 98.9% |
| Bofors RP7 | <<locked>> | 90% | 46,195 psi | 77% | 2595 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,544 psi | 81% | 2585 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,759 psi | 76% | 2621 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,343 psi | 84% | 2759 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 80% | 38,261 psi | 64% | 2477 fps | 96.6% |
| Hodgdon H414 | 39.8 gr | 90% | 43,207 psi | 72% | 2628 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 90% | 47,108 psi | 78% | 2651 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 45,121 psi | 75% | 2602 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,529 psi | 47% | 2277 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,292 psi | 69% | 2579 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 92% | 45,919 psi | 76% | 2700 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 44% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,294 psi | 72% | 2556 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 45,049 psi | 75% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,958 psi | 66% | 2480 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,554 psi | 71% | 2500 fps | 95.3% |
| IMR 4350 | <<locked>> | 92% | 43,613 psi | 72% | 2575 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,598 psi | 71% | 2530 fps | 95.2% |
| IMR 4831 | <<locked>> | 84% | 31,807 psi | 53% | 2375 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 41,408 psi | 69% | 2559 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 46,731 psi | 78% | 2598 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 44,019 psi | 73% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,831 psi | 74% | 2530 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 39,987 psi | 66% | 2487 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 37,231 psi | 62% | 2431 fps | 95.2% |
| Lovex S070 | <<locked>> | 90% | 42,366 psi | 70% | 2556 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 43,976 psi | 73% | 2546 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 44,295 psi | 74% | 2556 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,798 psi | 66% | 2516 fps | 98.6% |
| Norma 204 | <<locked>> | 96% | 49,661 psi | 83% | 2717 fps | 95.1% |
| Norma URP | <<locked>> | 84% | 33,301 psi | 55% | 2418 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 39,479 psi | 66% | 2533 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 39,421 psi | 65% | 2559 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 46,630 psi | 77% | 2605 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,282 psi | 77% | 2625 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,705 psi | 84% | 2648 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,716 psi | 44% | 1522 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,191 psi | 68% | 2513 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,786 psi | 71% | 2635 fps | 98.7% |
| ReloadSwiss RS 60 | 36.1 gr | 80% | 34,606 psi | 57% | 2503 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,882 psi | 58% | 2484 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,594 psi | 62% | 2549 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 47,863 psi | 80% | 2582 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,814 psi | 69% | 2500 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,302 psi | 59% | 2421 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 46,195 psi | 77% | 2595 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,231 psi | 62% | 2431 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,019 psi | 73% | 2572 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,987 psi | 66% | 2487 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 42,366 psi | 70% | 2556 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,201 psi | 60% | 2470 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,933 psi | 75% | 2579 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,410 psi | 72% | 2566 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,397 psi | 75% | 2500 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,782 psi | 63% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 41,611 psi | 69% | 2477 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 50,879 psi | 85% | 2677 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,889 psi | 75% | 2500 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,933 psi | 75% | 2582 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 36,085 psi | 60% | 2428 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 26,281 psi | 44% | 2267 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 51,184 psi | 85% | 2552 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,716 psi | 76% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,408 psi | 69% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,018 psi | 70% | 2493 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,374 psi | 57% | 2369 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 84% | 34,809 psi | 58% | 2421 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 46,934 psi | 78% | 2595 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,335 psi | 67% | 2480 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,055 psi | 57% | 2418 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 90% | 30,777 psi | 51% | 2408 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,458 psi | 51% | 2297 fps | 96.4% |
| Winchester 748 | <<locked>> | 80% | 46,499 psi | 77% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 43,207 psi | 72% | 2628 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,776 psi | 48% | 2408 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,757 psi | 71% | 2566 fps | 99.4% |
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 96 powders for .260 Rem. loaded with the .264 | 130gr | Sierra Tipped GameKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,861 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,861 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 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 130.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, 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. Alliant Reloder-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for .260 Rem. with the .264 | 130gr | Sierra Tipped GameKing 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.