Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .264 | 121gr | SUS-TAC LRT bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Hodgdon Retumbo 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>> | 92% | 54,143 psi | 85% | 3087 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,027 psi | 86% | 3120 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,535 psi | 87% | 3245 fps | 99% |
| Accurate MAGPRO | <<locked>> | 92% | 56,492 psi | 89% | 3248 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 90% | 56,043 psi | 88% | 3182 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 57,638 psi | 90% | 3251 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,837 psi | 81% | 3140 fps | 98.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,572 psi | 73% | 3100 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,130 psi | 88% | 3179 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,130 psi | 88% | 3179 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,115 psi | 88% | 3182 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,087 psi | 89% | 3192 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,521 psi | 87% | 3169 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,012 psi | 85% | 3182 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,448 psi | 87% | 3156 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,810 psi | 86% | 3219 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,840 psi | 88% | 3248 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,550 psi | 87% | 3143 fps | 96.4% |
| Bofors RP15 | <<locked>> | 96% | 56,927 psi | 89% | 3232 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 3222 fps | 99.2% |
| Bofors RP5 | <<locked>> | 92% | 54,012 psi | 85% | 3182 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 56,971 psi | 89% | 3120 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3241 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 56,826 psi | 89% | 3179 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,608 psi | 87% | 3133 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 57,348 psi | 90% | 3182 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,260 psi | 88% | 3163 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,260 psi | 88% | 3097 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,667 psi | 90% | 3366 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,464 psi | 90% | 3219 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 58% | 2001 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,347 psi | 87% | 3107 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,114 psi | 86% | 3091 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 55,376 psi | 87% | 3110 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,723 psi | 86% | 3104 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 94% | 55,593 psi | 87% | 3228 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,018 psi | 66% | 2992 fps | 96.5% |
| Lovex S065 | <<locked>> | 84% | 55,869 psi | 88% | 3091 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,595 psi | 90% | 3140 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,477 psi | 87% | 3110 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,492 psi | 89% | 3166 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 42,105 psi | 66% | 3018 fps | 98.6% |
| Norma MRP | <<locked>> | 90% | 53,766 psi | 84% | 3202 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 57,174 psi | 90% | 3159 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,507 psi | 89% | 3251 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 56,086 psi | 88% | 3166 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,911 psi | 86% | 3176 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 59% | 2044 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,129 psi | 86% | 3143 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,450 psi | 90% | 3235 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,592 psi | 86% | 3291 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,679 psi | 84% | 3238 fps | 98% |
| Rottweil R 904 | <<locked>> | 90% | 56,971 psi | 89% | 3150 fps | 99% |
| Rottweil R 905 | <<locked>> | 90% | 54,955 psi | 86% | 3156 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 56,971 psi | 89% | 3120 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,869 psi | 88% | 3091 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,595 psi | 90% | 3140 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,027 psi | 86% | 3038 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,534 psi | 85% | 3153 fps | 99.5% |
| Somchem S361 | <<locked>> | 88% | 54,897 psi | 86% | 3077 fps | 98.2% |
| Somchem S365 | <<locked>> | 86% | 54,143 psi | 85% | 3107 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,593 psi | 87% | 3130 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 55,753 psi | 87% | 3025 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,129 psi | 86% | 3094 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,216 psi | 87% | 3107 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 84% | 54,476 psi | 85% | 3100 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,450 psi | 90% | 3182 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,493 psi | 90% | 3264 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 98% | 57,479 psi | 90% | 3241 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 3238 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,737 psi | 86% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,826 psi | 89% | 3179 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,359 psi | 84% | 3238 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,564 psi | 87% | 3123 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% | 35,940 psi | 56% | 2726 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 47,979 psi | 75% | 3002 fps | 100% |
| Accurate High Country | 58.2 gr | 80% | 39,131 psi | 61% | 2904 fps | 95% |
| Accurate MAGPRO | <<locked>> | 86% | 45,759 psi | 72% | 3045 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 39,871 psi | 62% | 2864 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 40,988 psi | 64% | 2920 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 92% | 39,552 psi | 62% | 2877 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 33,330 psi | 52% | 2766 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,321 psi | 63% | 2867 fps | 96.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,321 psi | 63% | 2867 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,948 psi | 72% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,345 psi | 84% | 3133 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,958 psi | 63% | 2861 fps | 96.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,810 psi | 56% | 2795 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,505 psi | 54% | 2756 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,994 psi | 47% | 2657 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,130 psi | 60% | 2910 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,170 psi | 82% | 3081 fps | 95.6% |
| Bofors RP15 | <<locked>> | 84% | 38,261 psi | 60% | 2854 fps | 96% |
| Bofors RP30 | <<locked>> | 90% | 38,682 psi | 61% | 2894 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 35,810 psi | 56% | 2795 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 50,299 psi | 79% | 3005 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 37,768 psi | 59% | 2835 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 49,617 psi | 78% | 3058 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 51,880 psi | 81% | 3068 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 43,613 psi | 68% | 2923 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,989 psi | 67% | 2910 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,279 psi | 68% | 2881 fps | 100% |
| Hodgdon Retumbo | 60.2 gr | 86% | 35,723 psi | 56% | 2874 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 49,516 psi | 78% | 3084 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,891 psi | 44% | 1791 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,687 psi | 72% | 2930 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,706 psi | 81% | 3031 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 45,643 psi | 72% | 2943 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,337 psi | 66% | 2861 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 84% | 39,450 psi | 62% | 2894 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 98% | 39,233 psi | 61% | 2927 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 49,197 psi | 77% | 2976 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 47,529 psi | 74% | 2966 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 30,980 psi | 49% | 2595 fps | 96% |
| Norma 204 | <<locked>> | 80% | 46,079 psi | 72% | 2976 fps | 98% |
| Norma 217 | <<locked>> | 94% | 34,345 psi | 54% | 2822 fps | 96% |
| Norma MRP | <<locked>> | 80% | 37,724 psi | 59% | 2871 fps | 97.4% |
| Norma URP | <<locked>> | 80% | 46,876 psi | 73% | 2986 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,204 psi | 61% | 2900 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 45,919 psi | 72% | 2986 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 35,041 psi | 55% | 2769 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,413 psi | 45% | 1831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,037 psi | 75% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,282 psi | 73% | 3045 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,721 psi | 51% | 2779 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,453 psi | 67% | 3012 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 41,365 psi | 65% | 2844 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 39,363 psi | 62% | 2844 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 80% | 50,299 psi | 79% | 3005 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,197 psi | 77% | 2976 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 47,529 psi | 74% | 2966 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,298 psi | 76% | 2923 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,030 psi | 61% | 2841 fps | 96.4% |
| Somchem S361 | <<locked>> | 80% | 42,105 psi | 66% | 2831 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 44,063 psi | 69% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,885 psi | 63% | 2825 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 52,228 psi | 82% | 2972 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,298 psi | 76% | 2979 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,563 psi | 54% | 2687 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 47,892 psi | 75% | 2986 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,885 psi | 61% | 2844 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 84% | 43,540 psi | 68% | 2995 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 88% | 40,930 psi | 64% | 2917 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 47,253 psi | 74% | 3100 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,630 psi | 75% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,850 psi | 78% | 3061 fps | 99.6% |
| Winchester StaBALL HD | 57.6 gr | 80% | 30,879 psi | 48% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,506 psi | 57% | 2743 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 74 powders for 6.5 x 63 Messner Mag. loaded with the .264 | 121gr | SUS-TAC LRT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,366 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,366 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 121.0 gr projectile in 0.264" calls for a 1:8.0 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. Accurate High Country, Hodgdon Retumbo, Winchester StaBALL HD rank at the top here: for 6.5 x 63 Messner Mag. with the .264 | 121gr | SUS-TAC LRT 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.