Load Specifications
Load data in caliber .260 Rem. with .264 | 115gr | Hammer Power 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 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% | 53,316 psi | 89% | 2805 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,590 psi | 86% | 2825 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 50,995 psi | 85% | 2822 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 51,996 psi | 86% | 2877 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 54,331 psi | 90% | 2913 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,633 psi | 84% | 2930 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 88% | 52,765 psi | 88% | 2900 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 53,722 psi | 89% | 2897 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 51,953 psi | 86% | 2854 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 52,228 psi | 87% | 2838 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,272 psi | 89% | 2959 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,315 psi | 87% | 3012 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,055 psi | 88% | 2917 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,330 psi | 89% | 2815 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,780 psi | 89% | 2940 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,385 psi | 82% | 2933 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,925 psi | 90% | 3038 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,737 psi | 58% | 2644 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 52,301 psi | 87% | 2910 fps | 99% |
| Bofors RP3 | <<locked>> | 94% | 53,664 psi | 89% | 2933 fps | 99.9% |
| Bofors RP7 | <<locked>> | 98% | 54,259 psi | 90% | 2894 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,853 psi | 89% | 2841 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,317 psi | 90% | 2933 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,779 psi | 88% | 2979 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 82% | 52,518 psi | 87% | 2854 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,461 psi | 89% | 2881 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 51,300 psi | 85% | 2887 fps | 98.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,998 psi | 90% | 2982 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 53,258 psi | 88% | 2913 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,411 psi | 75% | 2812 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,069 psi | 87% | 2940 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,896 psi | 58% | 1775 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,068 psi | 85% | 2861 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 52,866 psi | 88% | 2900 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,417 psi | 89% | 2884 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,476 psi | 89% | 2854 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 53,737 psi | 89% | 2776 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,011 psi | 88% | 2877 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,095 psi | 80% | 2871 fps | 98.3% |
| IMR 4895 | <<locked>> | 90% | 52,069 psi | 87% | 2923 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 86% | 51,953 psi | 86% | 2854 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 51,706 psi | 86% | 2838 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 51,996 psi | 86% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 52,663 psi | 87% | 2831 fps | 99.6% |
| Lovex S062 | <<locked>> | 92% | 52,533 psi | 87% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 52,011 psi | 86% | 2871 fps | 97.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,576 psi | 87% | 2897 fps | 96.7% |
| Norma 201 | <<locked>> | 88% | 51,169 psi | 85% | 2841 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 51,677 psi | 86% | 2851 fps | 100% |
| Norma 203B | <<locked>> | 92% | 52,953 psi | 88% | 2927 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 50,183 psi | 83% | 2923 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 92% | 53,693 psi | 89% | 2953 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,240 psi | 82% | 2910 fps | 96.8% |
| Ramshot TAC | <<locked>> | 86% | 52,373 psi | 87% | 2867 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 51,590 psi | 86% | 2887 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,895 psi | 88% | 2854 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,273 psi | 59% | 1818 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,271 psi | 85% | 2835 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,112 psi | 87% | 2871 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,404 psi | 90% | 3009 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,882 psi | 90% | 3045 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,357 psi | 84% | 2949 fps | 98.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,155 psi | 85% | 2979 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 86% | 52,214 psi | 87% | 2831 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 51,634 psi | 86% | 2841 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 53,069 psi | 88% | 2917 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 54,259 psi | 90% | 2894 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,011 psi | 86% | 2871 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 51,996 psi | 86% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 52,533 psi | 87% | 2874 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,576 psi | 87% | 2897 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 51,953 psi | 86% | 2933 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,867 psi | 89% | 2897 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 50,995 psi | 85% | 2867 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,447 psi | 89% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,374 psi | 89% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,373 psi | 87% | 2818 fps | 96.3% |
| Somchem S321 | <<locked>> | 84% | 52,794 psi | 88% | 2884 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 52,330 psi | 87% | 2789 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,417 psi | 89% | 2887 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 53,925 psi | 90% | 2920 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,512 psi | 74% | 2864 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 53,156 psi | 88% | 2762 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,621 psi | 89% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,389 psi | 90% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,315 psi | 87% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 51,822 psi | 86% | 2851 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,953 psi | 88% | 2923 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 86% | 52,272 psi | 87% | 2854 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 53,882 psi | 90% | 2874 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,648 psi | 86% | 2923 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,217 psi | 62% | 2723 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,679 psi | 89% | 2907 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 51,982 psi | 86% | 2904 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,375 psi | 90% | 2989 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,302 psi | 90% | 2930 fps | 99.9% |
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% | 44,208 psi | 73% | 2667 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,240 psi | 80% | 2776 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,419 psi | 61% | 2572 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,032 psi | 70% | 2713 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 34,490 psi | 57% | 2556 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 37,782 psi | 63% | 2687 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 40,611 psi | 67% | 2677 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 34,606 psi | 57% | 2523 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,685 psi | 71% | 2694 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 42,438 psi | 71% | 2694 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,748 psi | 83% | 2900 fps | 99.6% |
| Alliant Power Pro 2000-MR | 37.6 gr | 80% | 36,695 psi | 61% | 2687 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,939 psi | 56% | 2546 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,835 psi | 83% | 2766 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,376 psi | 60% | 2602 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,114 psi | 60% | 2648 fps | 95% |
| Alliant Reloder-17 | 38.9 gr | 84% | 33,344 psi | 55% | 2608 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,822 psi | 55% | 2592 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,740 psi | 66% | 2674 fps | 96.4% |
| Bofors RP3 | <<locked>> | 80% | 33,025 psi | 55% | 2536 fps | 96.6% |
| Bofors RP7 | <<locked>> | 96% | 50,778 psi | 84% | 2838 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,773 psi | 74% | 2690 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,046 psi | 68% | 2707 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,397 psi | 75% | 2851 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 49,037 psi | 81% | 2802 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,053 psi | 83% | 2828 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,189 psi | 65% | 2657 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 96% | 47,181 psi | 78% | 2864 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,915 psi | 68% | 2687 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,011 psi | 55% | 2543 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,898 psi | 61% | 2651 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,817 psi | 43% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,465 psi | 66% | 2644 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 40,495 psi | 67% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,289 psi | 60% | 2559 fps | 96% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,355 psi | 79% | 2749 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 50,618 psi | 84% | 2733 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,748 psi | 83% | 2822 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 36,782 psi | 61% | 2648 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 37,246 psi | 62% | 2635 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 42,685 psi | 71% | 2694 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 48,066 psi | 80% | 2779 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,233 psi | 65% | 2657 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 41,278 psi | 69% | 2625 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 36,013 psi | 60% | 2566 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 43,120 psi | 72% | 2710 fps | 95.7% |
| Lovex S070 | <<locked>> | 96% | 46,035 psi | 76% | 2782 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,827 psi | 66% | 2635 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 40,118 psi | 67% | 2651 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,766 psi | 59% | 2592 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 38,450 psi | 64% | 2697 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,273 psi | 59% | 2602 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 43,207 psi | 72% | 2795 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,743 psi | 71% | 2690 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,148 psi | 70% | 2717 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,282 psi | 77% | 2743 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,947 psi | 43% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,022 psi | 80% | 2782 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,426 psi | 75% | 2753 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,985 psi | 63% | 2703 fps | 96.5% |
| ReloadSwiss RS 60 | 37.1 gr | 80% | 31,169 psi | 52% | 2559 fps | 97.5% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,956 psi | 63% | 2710 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,307 psi | 69% | 2782 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,511 psi | 72% | 2684 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,840 psi | 63% | 2585 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,183 psi | 52% | 2480 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 96% | 50,778 psi | 84% | 2838 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,120 psi | 72% | 2710 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,233 psi | 65% | 2657 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 36,013 psi | 60% | 2566 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 96% | 46,035 psi | 76% | 2782 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,606 psi | 57% | 2589 fps | 95.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,669 psi | 68% | 2657 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,320 psi | 65% | 2648 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,379 psi | 69% | 2598 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,098 psi | 57% | 2457 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,907 psi | 81% | 2762 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 46,050 psi | 77% | 2772 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 40,973 psi | 68% | 2602 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,451 psi | 67% | 2661 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 32,227 psi | 54% | 2493 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 28,108 psi | 47% | 2467 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 46,891 psi | 78% | 2671 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,655 psi | 69% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,956 psi | 61% | 2575 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,985 psi | 63% | 2585 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,661 psi | 51% | 2434 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 90% | 37,971 psi | 63% | 2648 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,714 psi | 71% | 2687 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 36,376 psi | 60% | 2566 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 39,581 psi | 66% | 2700 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 98% | 34,722 psi | 58% | 2664 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,227 psi | 52% | 2454 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 42,148 psi | 70% | 2733 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 47,558 psi | 79% | 2874 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,682 psi | 64% | 2651 fps | 97.8% |
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 | 115gr | Hammer Power. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,775 fps to 3,045 fps. Accurate 4350 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 115.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .260 Rem. with the .264 | 115gr | Hammer Power 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.