Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .264 | 123gr | Reichenberg HDB Universal 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 Accurate MAGPRO.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 56,826 psi | 89% | 3110 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,479 psi | 90% | 3136 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 54,389 psi | 85% | 3205 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 90% | 55,434 psi | 87% | 3212 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 88% | 54,737 psi | 86% | 3143 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 92% | 56,434 psi | 88% | 3215 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,404 psi | 85% | 3173 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,979 psi | 77% | 3133 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,868 psi | 86% | 3140 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,868 psi | 86% | 3140 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,882 psi | 86% | 3143 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,244 psi | 85% | 3130 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,681 psi | 89% | 3209 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,346 psi | 85% | 3117 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,114 psi | 85% | 3186 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,737 psi | 86% | 3205 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,638 psi | 90% | 3169 fps | 97.3% |
| Bofors RP15 | <<locked>> | 94% | 55,854 psi | 88% | 3192 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 3248 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 56,681 psi | 89% | 3209 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 55,492 psi | 87% | 3081 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 56,231 psi | 88% | 3202 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 55,158 psi | 86% | 3133 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,479 psi | 90% | 3150 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 56,115 psi | 88% | 3146 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,824 psi | 86% | 3123 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,129 psi | 86% | 3061 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,811 psi | 89% | 3327 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,912 psi | 88% | 3176 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,391 psi | 59% | 1998 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,363 psi | 90% | 3123 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,855 psi | 89% | 3104 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,070 psi | 85% | 3071 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,768 psi | 89% | 3127 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 92% | 54,578 psi | 86% | 3192 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,599 psi | 70% | 3031 fps | 97.5% |
| Lovex S065 | <<locked>> | 84% | 57,696 psi | 90% | 3100 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,159 psi | 88% | 3104 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,462 psi | 85% | 3074 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,911 psi | 86% | 3123 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 44,889 psi | 70% | 3054 fps | 99.3% |
| Norma MRP | <<locked>> | 90% | 56,536 psi | 89% | 3228 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,811 psi | 87% | 3120 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,405 psi | 87% | 3212 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 84% | 54,694 psi | 86% | 3123 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,708 psi | 84% | 3136 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,145 psi | 60% | 2044 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,682 psi | 90% | 3163 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,246 psi | 88% | 3196 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,740 psi | 90% | 3320 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 3274 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 55,564 psi | 87% | 3110 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 90% | 57,435 psi | 90% | 3182 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 55,492 psi | 87% | 3081 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,696 psi | 90% | 3100 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,159 psi | 88% | 3104 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,971 psi | 89% | 3054 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,000 psi | 89% | 3176 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 57,159 psi | 90% | 3104 fps | 98.8% |
| Somchem S365 | <<locked>> | 86% | 56,608 psi | 89% | 3120 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,389 psi | 85% | 3091 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 84% | 57,334 psi | 90% | 3107 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,682 psi | 90% | 3130 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 56,550 psi | 89% | 3114 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,608 psi | 89% | 3150 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,188 psi | 88% | 3225 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 96% | 56,608 psi | 89% | 3205 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 3274 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3264 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,956 psi | 89% | 3058 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,434 psi | 87% | 3140 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,101 psi | 89% | 3264 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,085 psi | 85% | 3084 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% | 37,840 psi | 59% | 2756 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 50,314 psi | 79% | 3022 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 41,176 psi | 65% | 2933 fps | 96.1% |
| Accurate MAGPRO | 64 gr | 84% | 44,744 psi | 70% | 3002 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 41,829 psi | 66% | 2894 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 82% | 39,885 psi | 63% | 2877 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 90% | 38,711 psi | 61% | 2841 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 30,763 psi | 48% | 2671 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,221 psi | 66% | 2894 fps | 97.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,221 psi | 66% | 2894 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,080 psi | 75% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,829 psi | 66% | 2887 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,710 psi | 59% | 2825 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,347 psi | 57% | 2782 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,560 psi | 49% | 2690 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,524 psi | 64% | 2940 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,705 psi | 79% | 3041 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 34,983 psi | 55% | 2749 fps | 95% |
| Bofors RP30 | <<locked>> | 88% | 38,189 psi | 60% | 2861 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 37,710 psi | 59% | 2825 fps | 96.2% |
| Bofors RP7 | <<locked>> | 80% | 52,098 psi | 82% | 3022 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 37,043 psi | 58% | 2805 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 51,779 psi | 81% | 3077 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 54,012 psi | 85% | 3091 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 42,583 psi | 67% | 2884 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,785 psi | 65% | 2867 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,223 psi | 71% | 2897 fps | 100% |
| Hodgdon Retumbo | 60.6 gr | 84% | 35,244 psi | 55% | 2844 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 51,880 psi | 81% | 3107 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 44% | 1788 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,587 psi | 75% | 2953 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,461 psi | 84% | 3048 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 47,572 psi | 75% | 2963 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,394 psi | 65% | 2825 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 82% | 38,624 psi | 61% | 2858 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 38,725 psi | 61% | 2894 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 50,995 psi | 80% | 2992 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,371 psi | 77% | 2982 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 32,634 psi | 51% | 2621 fps | 97% |
| Norma 204 | <<locked>> | 80% | 47,834 psi | 75% | 2995 fps | 98.6% |
| Norma 217 | <<locked>> | 90% | 31,865 psi | 50% | 2730 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 39,769 psi | 62% | 2900 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 48,820 psi | 77% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 38,189 psi | 60% | 2861 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 47,790 psi | 75% | 3005 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 34,345 psi | 54% | 2733 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,645 psi | 45% | 1831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,241 psi | 79% | 3041 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,501 psi | 76% | 3064 fps | 100% |
| ReloadSwiss RS 76 | 63.3 gr | 82% | 32,068 psi | 50% | 2743 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 42,003 psi | 66% | 2982 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 43,018 psi | 67% | 2871 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 80% | 41,133 psi | 64% | 2867 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 80% | 52,098 psi | 82% | 3022 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,995 psi | 80% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,371 psi | 77% | 2982 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,980 psi | 78% | 2940 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,799 psi | 64% | 2864 fps | 97.3% |
| Somchem S361 | <<locked>> | 80% | 43,772 psi | 69% | 2854 fps | 96.1% |
| Somchem S365 | <<locked>> | 80% | 46,369 psi | 73% | 2956 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,771 psi | 65% | 2851 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 80% | 50,444 psi | 79% | 2999 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,332 psi | 57% | 2717 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 80% | 49,705 psi | 78% | 2999 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,640 psi | 64% | 2861 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 42,685 psi | 67% | 2959 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 86% | 40,132 psi | 63% | 2881 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 92% | 43,250 psi | 68% | 2999 fps | 95% |
| Vihtavuori N570 | <<locked>> | 98% | 50,691 psi | 79% | 3192 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,588 psi | 78% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,779 psi | 81% | 3077 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,996 psi | 52% | 2812 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,276 psi | 60% | 2772 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 73 powders for 6.5 x 63 Messner Mag. loaded with the .264 | 123gr | Reichenberg HDB Universal. Hodgdon Retumbo delivers the highest muzzle velocity at 3,327 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,327 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 59–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:10.0 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, Accurate MAGPRO rank at the top here: for 6.5 x 63 Messner Mag. with the .264 | 123gr | Reichenberg HDB Universal 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.