Load Specifications
Load data in caliber 6.5 Rem. SA Ultra Mag. with .264 | 123gr | Fox Classic Hunter 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-26, Norma MRP and Vihtavuori N560.
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 2495 | <<locked>> | 82% | 56,666 psi | 87% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 58,378 psi | 90% | 2982 fps | 99.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,101 psi | 88% | 3028 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 57,392 psi | 88% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,158 psi | 85% | 3018 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,941 psi | 86% | 3123 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 86% | 57,783 psi | 89% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,333 psi | 87% | 3071 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,783 psi | 89% | 3127 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,551 psi | 89% | 3123 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 58,552 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,187 psi | 85% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,304 psi | 87% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,841 psi | 89% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,651 psi | 86% | 3054 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,942 psi | 88% | 3120 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,882 psi | 83% | 3041 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,702 psi | 72% | 2972 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 58,392 psi | 90% | 3192 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,330 psi | 81% | 3041 fps | 98.1% |
| Bofors RP3 | <<locked>> | 84% | 55,796 psi | 86% | 2979 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,942 psi | 88% | 3120 fps | 98.9% |
| Bofors RP7 | <<locked>> | 90% | 58,711 psi | 90% | 3025 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,296 psi | 71% | 2910 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 84% | 56,376 psi | 87% | 3002 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,537 psi | 89% | 3081 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 88% | 57,029 psi | 88% | 3038 fps | 99% |
| Hodgdon H4831 | <<locked>> | 98% | 58,015 psi | 89% | 3068 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,681 psi | 87% | 3048 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,652 psi | 87% | 3002 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,595 psi | 89% | 3031 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,614 psi | 70% | 3009 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 90% | 58,363 psi | 90% | 3123 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 56% | 1873 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,957 psi | 89% | 2995 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,029 psi | 88% | 2976 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,144 psi | 86% | 2963 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 56,521 psi | 87% | 3009 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,913 psi | 88% | 2999 fps | 99.5% |
| IMR 4831 | <<locked>> | 92% | 55,608 psi | 86% | 3012 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,652 psi | 87% | 3015 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,535 psi | 85% | 2992 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,405 psi | 85% | 3100 fps | 97.7% |
| Lovex S060 | <<locked>> | 82% | 58,450 psi | 90% | 2959 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 57,145 psi | 88% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,145 psi | 88% | 2995 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 58,552 psi | 90% | 3038 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,239 psi | 73% | 2871 fps | 99.1% |
| Norma 201 | <<locked>> | 82% | 58,233 psi | 90% | 2976 fps | 100% |
| Norma 203B | <<locked>> | 84% | 58,175 psi | 89% | 3025 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,711 psi | 89% | 3068 fps | 98.7% |
| Norma MRP | <<locked>> | 98% | 56,782 psi | 87% | 3146 fps | 99.7% |
| Norma URP | <<locked>> | 92% | 57,638 psi | 89% | 3061 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,303 psi | 85% | 2995 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,709 psi | 86% | 3117 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 56,695 psi | 87% | 3068 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,038 psi | 77% | 2986 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 57% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,231 psi | 87% | 2989 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,043 psi | 88% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,158 psi | 85% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,696 psi | 89% | 3136 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,832 psi | 71% | 3005 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 55,680 psi | 86% | 2927 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,985 psi | 86% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,870 psi | 89% | 3038 fps | 98% |
| Rottweil R 905 | <<locked>> | 96% | 54,984 psi | 85% | 3045 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 58,711 psi | 90% | 3025 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,145 psi | 88% | 2995 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,145 psi | 88% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 58,552 psi | 90% | 3038 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,856 psi | 89% | 3041 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 58,610 psi | 90% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,811 psi | 87% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,652 psi | 87% | 2946 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 58,421 psi | 90% | 3100 fps | 99.1% |
| Somchem S335 | <<locked>> | 82% | 58,668 psi | 90% | 2894 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 56,014 psi | 86% | 2976 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,159 psi | 86% | 2976 fps | 97% |
| Somchem S365 | <<locked>> | 94% | 57,493 psi | 88% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,709 psi | 86% | 3018 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 82% | 56,202 psi | 86% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,463 psi | 87% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,406 psi | 88% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,014 psi | 86% | 2999 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,042 psi | 85% | 2992 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 84% | 58,320 psi | 90% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,245 psi | 85% | 3005 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,333 psi | 87% | 3071 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,884 psi | 88% | 3140 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,559 psi | 75% | 2976 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,680 psi | 86% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,537 psi | 89% | 3081 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,835 psi | 77% | 3110 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 58,798 psi | 90% | 3018 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,738 psi | 86% | 3012 fps | 98.6% |
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% | 53,229 psi | 82% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,256 psi | 79% | 2867 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 32,648 psi | 50% | 2552 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,502 psi | 78% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,740 psi | 60% | 2717 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 51,866 psi | 80% | 3051 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 47,703 psi | 73% | 2835 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 43,047 psi | 66% | 2825 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 94% | 47,210 psi | 73% | 2936 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,664 psi | 83% | 3064 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,559 psi | 75% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,648 psi | 79% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,826 psi | 58% | 2733 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,163 psi | 66% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,190 psi | 62% | 2759 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,480 psi | 62% | 2808 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,557 psi | 42% | 2470 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,328 psi | 48% | 2595 fps | 95% |
| Alliant Reloder-26 | 50.7 gr | 80% | 29,617 psi | 46% | 2582 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 42,786 psi | 66% | 2858 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 48,675 psi | 75% | 2867 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,480 psi | 62% | 2808 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 42,612 psi | 66% | 2736 fps | 96.8% |
| Hodgdon H1000 | <<locked>> | 98% | 43,178 psi | 66% | 2841 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 49,023 psi | 75% | 2884 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,828 psi | 63% | 2769 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 43,787 psi | 67% | 2795 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 94% | 50,444 psi | 78% | 2943 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,574 psi | 76% | 2927 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,375 psi | 54% | 2621 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,867 psi | 83% | 2976 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,827 psi | 61% | 2867 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 39,856 psi | 61% | 2782 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 42% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,563 psi | 84% | 2946 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,198 psi | 77% | 2867 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,605 psi | 81% | 2904 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 38,493 psi | 59% | 2664 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,367 psi | 68% | 2772 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 37,260 psi | 57% | 2671 fps | 98.5% |
| IMR 4895 | <<locked>> | 80% | 52,997 psi | 82% | 2959 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,037 psi | 75% | 2881 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 44,976 psi | 69% | 2904 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 54,824 psi | 84% | 2904 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,343 psi | 77% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,640 psi | 64% | 2717 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,813 psi | 61% | 2697 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 33,866 psi | 52% | 2585 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 54,824 psi | 84% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,995 psi | 78% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,685 psi | 67% | 2815 fps | 95.9% |
| Norma MRP | 52.9 gr | 86% | 37,014 psi | 57% | 2759 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,624 psi | 59% | 2717 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 51,779 psi | 80% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,831 psi | 69% | 2913 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 37,637 psi | 58% | 2703 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 94% | 39,697 psi | 61% | 2779 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 43% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,110 psi | 76% | 2867 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,890 psi | 71% | 2917 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,812 psi | 60% | 2740 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,565 psi | 58% | 2749 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,840 psi | 57% | 2785 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 52,098 psi | 80% | 2874 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,861 psi | 71% | 2812 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,715 psi | 69% | 2805 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 41,843 psi | 64% | 2799 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 42,612 psi | 66% | 2736 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,640 psi | 64% | 2717 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 50,343 psi | 77% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,813 psi | 61% | 2697 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,427 psi | 73% | 2874 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,940 psi | 85% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,195 psi | 73% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,683 psi | 63% | 2657 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,466 psi | 64% | 2792 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 55,317 psi | 85% | 2848 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,137 psi | 71% | 2812 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,052 psi | 75% | 2858 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 35,215 psi | 54% | 2671 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,101 psi | 57% | 2661 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 52,779 psi | 81% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,852 psi | 81% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,092 psi | 68% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,045 psi | 62% | 2717 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 39,204 psi | 60% | 2700 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 50,981 psi | 78% | 2841 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,363 psi | 61% | 2713 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,530 psi | 47% | 2549 fps | 96.8% |
| Vihtavuori N560 | 57.8 gr | 94% | 49,559 psi | 76% | 3009 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 98% | 45,266 psi | 70% | 2910 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,218 psi | 60% | 2684 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,075 psi | 63% | 2776 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,294 psi | 37% | 2434 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 55,085 psi | 85% | 2963 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,974 psi | 65% | 2766 fps | 95.6% |
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 6.5 Rem. SA Ultra Mag. loaded with the .264 | 123gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,192 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,192 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 (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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-26, Norma MRP, Vihtavuori N560 rank at the top here: for 6.5 Rem. SA Ultra Mag. with the .264 | 123gr | Fox Classic Hunter 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.