Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .264 | 126gr | Lehigh Defense Controlled Chaos bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 56,043 psi | 88% | 3064 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,927 psi | 89% | 3094 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 54,824 psi | 86% | 3169 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 88% | 54,143 psi | 85% | 3100 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 92% | 55,738 psi | 87% | 3169 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 3127 fps | 99.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,385 psi | 76% | 3091 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,288 psi | 85% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,246 psi | 90% | 3146 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,956 psi | 88% | 3163 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,479 psi | 90% | 3127 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,000 psi | 89% | 3196 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 53,969 psi | 85% | 3159 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,058 psi | 89% | 3123 fps | 97.2% |
| Bofors RP15 | <<locked>> | 94% | 55,143 psi | 86% | 3146 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,869 psi | 89% | 3202 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 55,956 psi | 88% | 3163 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 55,143 psi | 86% | 3035 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 55,521 psi | 87% | 3159 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 54,679 psi | 86% | 3094 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,956 psi | 89% | 3104 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 55,405 psi | 87% | 3097 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,331 psi | 85% | 3081 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,592 psi | 86% | 3015 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,999 psi | 88% | 3281 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,114 psi | 86% | 3127 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,275 psi | 58% | 1965 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,971 psi | 89% | 3077 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,318 psi | 88% | 3058 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,174 psi | 90% | 3084 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,289 psi | 88% | 3081 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 57,667 psi | 90% | 3209 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,859 psi | 69% | 2982 fps | 97.5% |
| Lovex S065 | <<locked>> | 84% | 57,174 psi | 90% | 3058 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,666 psi | 87% | 3054 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,450 psi | 90% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,288 psi | 85% | 3077 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 44,077 psi | 69% | 3012 fps | 99.3% |
| Norma MRP | <<locked>> | 90% | 55,840 psi | 88% | 3179 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,274 psi | 87% | 3074 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,433 psi | 85% | 3163 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 54,056 psi | 85% | 3081 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,174 psi | 90% | 3156 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,247 psi | 60% | 2011 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,029 psi | 89% | 3117 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,317 psi | 87% | 3143 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,898 psi | 89% | 3274 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3225 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 54,969 psi | 86% | 3064 fps | 99% |
| Rottweil R 905 | <<locked>> | 90% | 56,826 psi | 89% | 3136 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 55,143 psi | 86% | 3035 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,174 psi | 90% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,666 psi | 87% | 3054 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,289 psi | 88% | 3009 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,405 psi | 88% | 3130 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 56,550 psi | 89% | 3054 fps | 98.8% |
| Somchem S365 | <<locked>> | 86% | 56,101 psi | 88% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,406 psi | 90% | 3107 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,348 psi | 90% | 2992 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,811 psi | 89% | 3064 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,072 psi | 89% | 3084 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 56,115 psi | 88% | 3071 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,970 psi | 88% | 3104 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,521 psi | 87% | 3176 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 96% | 55,840 psi | 88% | 3163 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3228 fps | 98.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,621 psi | 84% | 3215 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,463 psi | 88% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,940 psi | 86% | 3097 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,043 psi | 88% | 3215 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,421 psi | 90% | 3104 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 37,304 psi | 58% | 2713 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 49,661 psi | 78% | 2976 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 44,208 psi | 69% | 2959 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 41,263 psi | 65% | 2848 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 82% | 39,436 psi | 62% | 2835 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 90% | 38,305 psi | 60% | 2805 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 30,356 psi | 48% | 2631 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,558 psi | 75% | 2982 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,307 psi | 65% | 2841 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,188 psi | 58% | 2782 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,911 psi | 56% | 2740 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,111 psi | 49% | 2648 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,856 psi | 62% | 2897 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,256 psi | 79% | 2999 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 34,635 psi | 54% | 2713 fps | 95% |
| Bofors RP30 | <<locked>> | 88% | 37,637 psi | 59% | 2822 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 37,188 psi | 58% | 2782 fps | 96.2% |
| Bofors RP7 | <<locked>> | 80% | 51,721 psi | 81% | 2979 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 36,550 psi | 57% | 2762 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 51,213 psi | 80% | 3031 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 53,432 psi | 84% | 3045 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 42,148 psi | 66% | 2844 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,350 psi | 65% | 2825 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,773 psi | 70% | 2854 fps | 100% |
| Hodgdon Retumbo | 58.9 gr | 84% | 34,679 psi | 54% | 2802 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 51,314 psi | 80% | 3061 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,949 psi | 44% | 1759 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,036 psi | 74% | 2907 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,113 psi | 83% | 3005 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 47,181 psi | 74% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,901 psi | 64% | 2782 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 82% | 38,189 psi | 60% | 2815 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 38,174 psi | 60% | 2854 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 50,604 psi | 79% | 2949 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,979 psi | 77% | 2943 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 32,198 psi | 50% | 2585 fps | 97% |
| Norma 204 | <<locked>> | 80% | 47,340 psi | 74% | 2949 fps | 98.5% |
| Norma 217 | <<locked>> | 90% | 31,285 psi | 49% | 2687 fps | 95% |
| Norma MRP | <<locked>> | 80% | 39,073 psi | 61% | 2854 fps | 98.1% |
| Norma URP | <<locked>> | 80% | 48,414 psi | 76% | 2959 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,768 psi | 59% | 2822 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 47,268 psi | 74% | 2959 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 33,837 psi | 53% | 2694 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,674 psi | 45% | 1801 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,763 psi | 78% | 2999 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,022 psi | 75% | 3022 fps | 100% |
| ReloadSwiss RS 76 | 61.6 gr | 82% | 31,662 psi | 50% | 2707 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,147 psi | 64% | 2933 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 42,453 psi | 67% | 2825 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 80% | 40,756 psi | 64% | 2828 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 80% | 51,721 psi | 81% | 2979 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,604 psi | 79% | 2949 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,979 psi | 77% | 2943 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,443 psi | 77% | 2894 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,422 psi | 63% | 2825 fps | 97.3% |
| Somchem S361 | <<locked>> | 80% | 43,410 psi | 68% | 2815 fps | 96.1% |
| Somchem S365 | <<locked>> | 80% | 45,701 psi | 72% | 2913 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,249 psi | 65% | 2808 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 80% | 53,751 psi | 84% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,850 psi | 78% | 2953 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,824 psi | 56% | 2674 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 80% | 49,153 psi | 77% | 2956 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,190 psi | 63% | 2822 fps | 100% |
| Vihtavuori N560 | 59.7 gr | 82% | 42,032 psi | 66% | 2913 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 86% | 39,610 psi | 62% | 2841 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 94% | 45,774 psi | 72% | 3022 fps | 96% |
| Vihtavuori N570 | <<locked>> | 98% | 50,009 psi | 78% | 3146 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,197 psi | 77% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,213 psi | 80% | 3031 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,387 psi | 51% | 2772 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,826 psi | 59% | 2730 fps | 96.4% |
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 76 powders for 6.5 x 63 Messner Mag. loaded with the .264 | 126gr | Lehigh Defense Controlled Chaos. Hodgdon Retumbo delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,281 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 126.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, ReloadSwiss RS 76, Vihtavuori N560 rank at the top here: for 6.5 x 63 Messner Mag. with the .264 | 126gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron 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.