Load Specifications
Load data in caliber 6.5 x 63 R Messner Mag. with .264 | 120gr | Impala RNFP KO bullet and 68 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 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>> | 90% | 55,680 psi | 87% | 3107 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,144 psi | 88% | 3136 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,232 psi | 90% | 3258 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 88% | 55,927 psi | 88% | 3182 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 92% | 57,711 psi | 90% | 3255 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,985 psi | 88% | 3215 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,662 psi | 79% | 3182 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,246 psi | 88% | 3186 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,593 psi | 87% | 3173 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,563 psi | 86% | 3192 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,246 psi | 88% | 3166 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,492 psi | 87% | 3228 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,753 psi | 89% | 3261 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,158 psi | 86% | 3140 fps | 96.4% |
| Bofors RP15 | <<locked>> | 94% | 57,464 psi | 90% | 3238 fps | 99.7% |
| Bofors RP30 | <<locked>> | 98% | 55,680 psi | 87% | 3238 fps | 99.3% |
| Bofors RP5 | <<locked>> | 90% | 54,563 psi | 86% | 3192 fps | 99.5% |
| Bofors RP7 | <<locked>> | 82% | 57,072 psi | 89% | 3120 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 57,522 psi | 90% | 3245 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 56,811 psi | 89% | 3179 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,479 psi | 90% | 3186 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,202 psi | 88% | 3163 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,579 psi | 89% | 3100 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,534 psi | 85% | 3310 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,334 psi | 90% | 3219 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,550 psi | 59% | 2014 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,361 psi | 87% | 3107 fps | 99.8% |
| IMR 4831 | <<locked>> | 84% | 56,043 psi | 88% | 3117 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,621 psi | 86% | 3104 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 92% | 55,941 psi | 88% | 3235 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,557 psi | 73% | 3087 fps | 97.7% |
| Lovex S065 | <<locked>> | 82% | 55,999 psi | 88% | 3091 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 54,621 psi | 86% | 3091 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,898 psi | 89% | 3127 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,217 psi | 88% | 3163 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 47,166 psi | 74% | 3120 fps | 99.5% |
| Norma MRP | <<locked>> | 88% | 54,447 psi | 85% | 3212 fps | 99.9% |
| Norma URP | <<locked>> | 84% | 57,522 psi | 90% | 3166 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,695 psi | 89% | 3255 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 56,115 psi | 88% | 3166 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,579 psi | 87% | 3186 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,566 psi | 60% | 2064 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,912 psi | 88% | 3153 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,566 psi | 90% | 3238 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,317 psi | 87% | 3304 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,708 psi | 86% | 3255 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 88% | 57,058 psi | 89% | 3153 fps | 99% |
| Rottweil R 905 | <<locked>> | 88% | 55,608 psi | 87% | 3169 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 82% | 57,072 psi | 89% | 3120 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,999 psi | 88% | 3091 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,621 psi | 86% | 3091 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,027 psi | 86% | 3038 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,187 psi | 86% | 3163 fps | 99.5% |
| Somchem S361 | <<locked>> | 86% | 55,042 psi | 86% | 3081 fps | 98.2% |
| Somchem S365 | <<locked>> | 84% | 54,940 psi | 86% | 3117 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,202 psi | 88% | 3136 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 55,419 psi | 87% | 3097 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,738 psi | 87% | 3117 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 82% | 54,998 psi | 86% | 3107 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,201 psi | 87% | 3146 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,711 psi | 90% | 3271 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 94% | 55,056 psi | 86% | 3199 fps | 98.7% |
| Vihtavuori N568 | <<locked>> | 98% | 55,419 psi | 87% | 3255 fps | 97.8% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3310 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,563 psi | 86% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,029 psi | 89% | 3186 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,737 psi | 86% | 3258 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,738 psi | 87% | 3130 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% | 40,567 psi | 64% | 2828 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 52,707 psi | 83% | 3077 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 43,845 psi | 69% | 2999 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 43,395 psi | 68% | 2943 fps | 97.5% |
| ADI AR 2213 | <<locked>> | 82% | 41,597 psi | 65% | 2933 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 90% | 40,669 psi | 64% | 2904 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 86% | 32,996 psi | 52% | 2749 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,458 psi | 78% | 3071 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,497 psi | 68% | 2936 fps | 97.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,697 psi | 62% | 2887 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,537 psi | 60% | 2844 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,605 psi | 53% | 2762 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,656 psi | 67% | 3005 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 51,938 psi | 81% | 3077 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 37,159 psi | 58% | 2822 fps | 95.6% |
| Bofors RP30 | <<locked>> | 86% | 37,768 psi | 59% | 2867 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 39,697 psi | 62% | 2887 fps | 96.6% |
| Bofors RP7 | <<locked>> | 80% | 53,737 psi | 84% | 3064 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 38,812 psi | 61% | 2858 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 53,447 psi | 84% | 3123 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 41,568 psi | 65% | 2874 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 82% | 43,453 psi | 68% | 2917 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,963 psi | 74% | 2946 fps | 100% |
| Hodgdon Retumbo | 58.3 gr | 82% | 34,896 psi | 55% | 2844 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 53,330 psi | 84% | 3150 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,369 psi | 44% | 1808 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,081 psi | 77% | 2995 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 49,574 psi | 78% | 3012 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,902 psi | 67% | 2871 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 82% | 40,219 psi | 63% | 2910 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 94% | 38,493 psi | 60% | 2904 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 52,968 psi | 83% | 3038 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,459 psi | 81% | 3035 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 35,331 psi | 55% | 2700 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 49,429 psi | 77% | 3041 fps | 98.6% |
| Norma 217 | <<locked>> | 90% | 34,316 psi | 54% | 2815 fps | 96% |
| Norma MRP | <<locked>> | 80% | 41,669 psi | 65% | 2959 fps | 98.4% |
| Norma URP | <<locked>> | 80% | 50,821 psi | 80% | 3054 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 40,205 psi | 63% | 2920 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 49,501 psi | 78% | 3051 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 34,011 psi | 53% | 2736 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 45% | 1847 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,330 psi | 82% | 3094 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,125 psi | 79% | 3114 fps | 100% |
| ReloadSwiss RS 76 | 60.9 gr | 80% | 32,111 psi | 50% | 2753 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 44,121 psi | 69% | 3045 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 44,585 psi | 70% | 2917 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 80% | 43,221 psi | 68% | 2930 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 80% | 53,737 psi | 84% | 3064 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,968 psi | 83% | 3038 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,459 psi | 81% | 3035 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,822 psi | 81% | 2982 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,873 psi | 67% | 2923 fps | 97.5% |
| Somchem S361 | <<locked>> | 80% | 45,585 psi | 71% | 2904 fps | 96.3% |
| Somchem S365 | <<locked>> | 80% | 48,370 psi | 76% | 3009 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,918 psi | 69% | 2907 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 80% | 52,098 psi | 82% | 3045 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,261 psi | 60% | 2772 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 80% | 51,576 psi | 81% | 3048 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,250 psi | 68% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,481 psi | 65% | 2943 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 84% | 39,856 psi | 62% | 2887 fps | 95% |
| Vihtavuori N568 | <<locked>> | 92% | 45,339 psi | 71% | 3058 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 98% | 52,388 psi | 82% | 3241 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,155 psi | 80% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,447 psi | 84% | 3123 fps | 99.9% |
| Winchester StaBALL HD | 58.4 gr | 80% | 35,201 psi | 55% | 2890 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,205 psi | 63% | 2828 fps | 96.7% |
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 68 powders for 6.5 x 63 R Messner Mag. loaded with the .264 | 120gr | Impala RNFP KO. Hodgdon Retumbo delivers the highest muzzle velocity at 3,310 fps; across all powders the maximum-charge window runs from 2,014 fps to 3,310 fps. ADI AR 2217 gives the best case fill at 100 %, and 68 of the 68 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 120.0 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, Hodgdon TrailBoss 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, Winchester StaBALL HD rank at the top here: for 6.5 x 63 R Messner Mag. with the .264 | 120gr | Impala RNFP KO 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.