Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .264 | 123gr | Fox Classic Hunter bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, IMR 7828 SSC and Winchester StaBALL HD.
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>> | 94% | 57,319 psi | 90% | 3120 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,462 psi | 85% | 3094 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,130 psi | 88% | 3225 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 90% | 55,579 psi | 87% | 3159 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 57,450 psi | 90% | 3228 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,503 psi | 81% | 3120 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 3074 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,738 psi | 87% | 3156 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,898 psi | 89% | 3169 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,259 psi | 87% | 3146 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,493 psi | 90% | 3222 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,114 psi | 86% | 3130 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,563 psi | 86% | 3196 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,448 psi | 87% | 3222 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,376 psi | 87% | 3123 fps | 96.6% |
| Bofors RP15 | <<locked>> | 96% | 56,594 psi | 89% | 3205 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,288 psi | 85% | 3196 fps | 99.2% |
| Bofors RP5 | <<locked>> | 94% | 57,493 psi | 90% | 3222 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 56,652 psi | 89% | 3097 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,203 psi | 90% | 3219 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 56,289 psi | 88% | 3156 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,172 psi | 86% | 3107 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 57,159 psi | 90% | 3163 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,086 psi | 88% | 3143 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,970 psi | 88% | 3074 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3340 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,246 psi | 90% | 3196 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 58% | 1982 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,158 psi | 86% | 3084 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,650 psi | 86% | 3064 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 54,998 psi | 86% | 3087 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,244 psi | 85% | 3081 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 94% | 55,405 psi | 87% | 3205 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,495 psi | 65% | 2963 fps | 96.5% |
| Lovex S065 | <<locked>> | 84% | 55,230 psi | 87% | 3064 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,971 psi | 89% | 3114 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,810 psi | 86% | 3081 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,246 psi | 88% | 3146 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 41,582 psi | 65% | 2992 fps | 98.6% |
| Norma MRP | <<locked>> | 92% | 57,537 psi | 90% | 3245 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,637 psi | 89% | 3133 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,304 psi | 88% | 3232 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 55,825 psi | 87% | 3143 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,592 psi | 86% | 3153 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,898 psi | 59% | 2031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,737 psi | 86% | 3120 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,232 psi | 90% | 3212 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,230 psi | 85% | 3268 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,243 psi | 83% | 3212 fps | 98.1% |
| Rottweil R 904 | <<locked>> | 90% | 56,710 psi | 89% | 3130 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 90% | 54,679 psi | 86% | 3133 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 56,652 psi | 89% | 3097 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,230 psi | 87% | 3064 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,971 psi | 89% | 3114 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,740 psi | 90% | 2953 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,433 psi | 85% | 3012 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,259 psi | 85% | 3130 fps | 99.5% |
| Somchem S361 | <<locked>> | 88% | 54,607 psi | 86% | 3058 fps | 98.3% |
| Somchem S365 | <<locked>> | 88% | 57,638 psi | 90% | 3136 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,201 psi | 87% | 3107 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,419 psi | 87% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,839 psi | 86% | 3071 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,897 psi | 86% | 3087 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 57,696 psi | 90% | 3130 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,942 psi | 89% | 3156 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,276 psi | 90% | 3241 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 98% | 57,029 psi | 89% | 3215 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,201 psi | 85% | 3215 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,520 psi | 85% | 3025 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,521 psi | 89% | 3159 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,551 psi | 90% | 3278 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,259 psi | 87% | 3104 fps | 99.5% |
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% | 35,157 psi | 55% | 2697 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 47,355 psi | 74% | 2976 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 45,281 psi | 71% | 3018 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 39,552 psi | 62% | 2841 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 84% | 40,422 psi | 63% | 2890 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 92% | 39,131 psi | 61% | 2854 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 90% | 32,779 psi | 51% | 2740 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,484 psi | 71% | 2982 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,837 psi | 83% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,566 psi | 62% | 2835 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,302 psi | 55% | 2766 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,997 psi | 53% | 2730 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,443 psi | 46% | 2628 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,579 psi | 59% | 2877 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,924 psi | 81% | 3061 fps | 95.8% |
| Bofors RP15 | <<locked>> | 84% | 37,768 psi | 59% | 2828 fps | 96% |
| Bofors RP30 | <<locked>> | 90% | 38,159 psi | 60% | 2864 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 35,302 psi | 55% | 2766 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 49,937 psi | 78% | 2982 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 37,304 psi | 58% | 2812 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 49,284 psi | 77% | 3031 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 51,677 psi | 81% | 3048 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 43,250 psi | 68% | 2900 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,424 psi | 66% | 2881 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,902 psi | 67% | 2858 fps | 100% |
| Hodgdon Retumbo | 60.4 gr | 86% | 35,230 psi | 55% | 2848 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 49,211 psi | 77% | 3061 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 43% | 1775 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,353 psi | 71% | 2907 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,256 psi | 80% | 3005 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,962 psi | 70% | 2913 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,032 psi | 66% | 2838 fps | 95.6% |
| IMR 7828 SSC | 59 gr | 84% | 39,030 psi | 61% | 2867 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,653 psi | 61% | 2897 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 48,776 psi | 76% | 2949 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 47,079 psi | 74% | 2943 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 30,168 psi | 47% | 2559 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 45,513 psi | 71% | 2946 fps | 98% |
| Norma 217 | <<locked>> | 94% | 33,707 psi | 53% | 2789 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 37,043 psi | 58% | 2838 fps | 97.3% |
| Norma URP | <<locked>> | 80% | 46,514 psi | 73% | 2963 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 38,566 psi | 60% | 2871 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 45,368 psi | 71% | 2956 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 34,476 psi | 54% | 2740 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,340 psi | 44% | 1818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,587 psi | 75% | 2999 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,745 psi | 72% | 3015 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,126 psi | 50% | 2746 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,119 psi | 66% | 2989 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 40,799 psi | 64% | 2822 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 38,899 psi | 61% | 2822 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 49,937 psi | 78% | 2982 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,776 psi | 76% | 2949 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 47,079 psi | 74% | 2943 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,302 psi | 85% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,674 psi | 75% | 2894 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,566 psi | 60% | 2812 fps | 96.4% |
| Somchem S361 | <<locked>> | 80% | 41,481 psi | 65% | 2805 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 43,584 psi | 68% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,334 psi | 62% | 2799 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 51,880 psi | 81% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,935 psi | 75% | 2956 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,084 psi | 53% | 2661 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 47,224 psi | 74% | 2956 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,043 psi | 60% | 2808 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 43,178 psi | 68% | 2969 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 88% | 40,321 psi | 63% | 2887 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 46,818 psi | 73% | 3077 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,326 psi | 74% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,284 psi | 77% | 3031 fps | 99.6% |
| Winchester StaBALL HD | 57.7 gr | 80% | 30,153 psi | 47% | 2743 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,056 psi | 56% | 2717 fps | 95.4% |
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 72 powders for 6.5 x 63 Messner Mag. loaded with the .264 | 123gr | Fox Classic Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,340 fps; across all powders the maximum-charge window runs from 1,982 fps to 3,340 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 1:8.5 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, IMR 7828 SSC, Winchester StaBALL HD rank at the top here: for 6.5 x 63 Messner 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.