Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .264 | 123gr | Hornady A-MAX bullet and 73 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% | 55,564 psi | 87% | 3091 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,579 psi | 89% | 3123 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 57,043 psi | 89% | 3251 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 90% | 54,244 psi | 85% | 3189 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 90% | 57,203 psi | 90% | 3182 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 55,245 psi | 87% | 3192 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,374 psi | 84% | 3153 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,834 psi | 75% | 3107 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,537 psi | 90% | 3182 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,537 psi | 90% | 3182 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,435 psi | 90% | 3179 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,855 psi | 89% | 3173 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,463 psi | 87% | 3186 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,971 psi | 89% | 3156 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,376 psi | 88% | 3219 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,508 psi | 90% | 3248 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,608 psi | 89% | 3146 fps | 96.9% |
| Bofors RP15 | <<locked>> | 94% | 54,650 psi | 86% | 3173 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3225 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 55,463 psi | 87% | 3186 fps | 99.7% |
| Bofors RP7 | <<locked>> | 82% | 54,737 psi | 86% | 3064 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 98% | 54,897 psi | 86% | 3179 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 82% | 54,360 psi | 85% | 3120 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,681 psi | 89% | 3133 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 54,984 psi | 86% | 3123 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,624 psi | 90% | 3169 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,740 psi | 90% | 3097 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,347 psi | 87% | 3304 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,650 psi | 86% | 3153 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1988 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,420 psi | 88% | 3104 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,130 psi | 88% | 3087 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,811 psi | 89% | 3114 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,680 psi | 87% | 3104 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 57,087 psi | 89% | 3235 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,352 psi | 68% | 3002 fps | 97.1% |
| Lovex S065 | <<locked>> | 84% | 56,942 psi | 89% | 3087 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,143 psi | 86% | 3084 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,942 psi | 89% | 3110 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,609 psi | 90% | 3166 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 43,714 psi | 69% | 3031 fps | 99.1% |
| Norma MRP | <<locked>> | 90% | 55,288 psi | 87% | 3209 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,708 psi | 86% | 3100 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,853 psi | 84% | 3186 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 57,246 psi | 90% | 3163 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,739 psi | 89% | 3182 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 2037 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,608 psi | 89% | 3146 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,897 psi | 86% | 3173 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,405 psi | 88% | 3301 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3248 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 88% | 54,650 psi | 86% | 3091 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 90% | 56,405 psi | 88% | 3163 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 54,737 psi | 86% | 3064 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,942 psi | 89% | 3087 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,143 psi | 86% | 3084 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,057 psi | 88% | 3038 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,014 psi | 88% | 3156 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 56,101 psi | 88% | 3081 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 55,477 psi | 87% | 3104 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,985 psi | 89% | 3133 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 56,840 psi | 89% | 3022 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,550 psi | 89% | 3094 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,565 psi | 89% | 3110 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 55,564 psi | 87% | 3097 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,274 psi | 87% | 3130 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,998 psi | 86% | 3202 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 96% | 55,201 psi | 87% | 3182 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3251 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,072 psi | 88% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,360 psi | 85% | 3120 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,550 psi | 87% | 3245 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,942 psi | 89% | 3127 fps | 99.7% |
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% | 36,927 psi | 58% | 2733 fps | 98.3% |
| Accurate 4350 | <<locked>> | 80% | 49,168 psi | 77% | 3002 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,219 psi | 63% | 2910 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 84% | 43,816 psi | 69% | 2982 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 40,857 psi | 64% | 2871 fps | 97% |
| ADI AR 2213 | <<locked>> | 82% | 39,218 psi | 61% | 2861 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 90% | 38,000 psi | 60% | 2825 fps | 95% |
| ADI AR 2225 | <<locked>> | 88% | 32,140 psi | 50% | 2717 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,278 psi | 65% | 2871 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,278 psi | 65% | 2871 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,123 psi | 74% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,915 psi | 64% | 2864 fps | 97.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,956 psi | 58% | 2805 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,534 psi | 56% | 2762 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,763 psi | 48% | 2667 fps | 97% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,494 psi | 62% | 2920 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,908 psi | 78% | 3022 fps | 95.3% |
| Bofors RP15 | <<locked>> | 82% | 36,666 psi | 57% | 2795 fps | 95.6% |
| Bofors RP30 | <<locked>> | 88% | 37,304 psi | 58% | 2838 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 36,956 psi | 58% | 2805 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 51,329 psi | 80% | 3005 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 86% | 36,303 psi | 57% | 2782 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 50,720 psi | 79% | 3058 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 53,214 psi | 83% | 3074 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 41,901 psi | 66% | 2867 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,104 psi | 64% | 2848 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,396 psi | 70% | 2881 fps | 100% |
| Hodgdon Retumbo | 59.5 gr | 84% | 34,432 psi | 54% | 2822 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 50,894 psi | 80% | 3087 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,949 psi | 44% | 1781 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,630 psi | 73% | 2930 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,707 psi | 83% | 3031 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 46,731 psi | 73% | 2946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,553 psi | 64% | 2802 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 84% | 40,408 psi | 63% | 2900 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,753 psi | 59% | 2871 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 50,212 psi | 79% | 2976 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,559 psi | 76% | 2966 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 31,879 psi | 50% | 2602 fps | 96.7% |
| Norma 204 | <<locked>> | 80% | 47,094 psi | 74% | 2979 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 33,141 psi | 52% | 2769 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 38,783 psi | 61% | 2877 fps | 97.9% |
| Norma URP | <<locked>> | 80% | 47,993 psi | 75% | 2986 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,521 psi | 59% | 2841 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 47,007 psi | 74% | 2989 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 33,533 psi | 53% | 2713 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,674 psi | 45% | 1827 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,211 psi | 77% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,442 psi | 74% | 3045 fps | 100% |
| ReloadSwiss RS 76 | 62.1 gr | 82% | 31,256 psi | 49% | 2717 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 43,976 psi | 69% | 3028 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 42,119 psi | 66% | 2848 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 80% | 40,364 psi | 63% | 2851 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 80% | 51,329 psi | 80% | 3005 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,212 psi | 79% | 2976 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,559 psi | 76% | 2966 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,284 psi | 77% | 2923 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,045 psi | 63% | 2844 fps | 97% |
| Somchem S361 | <<locked>> | 80% | 42,989 psi | 67% | 2835 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 45,208 psi | 71% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,017 psi | 64% | 2835 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 53,316 psi | 84% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,400 psi | 77% | 2979 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,462 psi | 56% | 2694 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 48,921 psi | 77% | 2982 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,769 psi | 62% | 2844 fps | 99.9% |
| Vihtavuori N560 | 60.3 gr | 82% | 41,756 psi | 65% | 2936 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 86% | 39,276 psi | 62% | 2858 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 45,194 psi | 71% | 3041 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,675 psi | 76% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,952 psi | 80% | 3061 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,024 psi | 50% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,420 psi | 59% | 2749 fps | 96% |
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 73 powders for 6.5 x 63 Messner Mag. loaded with the .264 | 123gr | Hornady A-MAX. Hodgdon Retumbo delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 1,988 fps to 3,304 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 123.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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 | 123gr | Hornady A-MAX 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.