Load Specifications
Load data in caliber 6.5 x 63 R Messner Mag. with .264 | 140gr | Lapua Naturalis bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and ReloadSwiss RS 76.
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>> | 88% | 55,782 psi | 87% | 2910 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 57,305 psi | 90% | 3071 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 86% | 54,186 psi | 85% | 3012 fps | 99% |
| ADI AR 2209 | <<locked>> | 86% | 56,521 psi | 89% | 2992 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 54,781 psi | 86% | 3009 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 98% | 56,985 psi | 89% | 3038 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 53,388 psi | 84% | 3091 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 55,463 psi | 87% | 3064 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,710 psi | 89% | 2989 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,710 psi | 89% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 56,710 psi | 89% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,086 psi | 88% | 2979 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,434 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,246 psi | 90% | 2966 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,101 psi | 89% | 3041 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 53,853 psi | 84% | 3002 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 54,665 psi | 86% | 3074 fps | 97.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 50,575 psi | 79% | 2995 fps | 96.4% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 55,419 psi | 87% | 2966 fps | 98% |
| Bofors RP15 | <<locked>> | 90% | 54,650 psi | 86% | 2992 fps | 99.9% |
| Bofors RP30 | <<locked>> | 96% | 56,927 psi | 89% | 3058 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 55,434 psi | 87% | 3005 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 54,781 psi | 86% | 3005 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 54,230 psi | 85% | 2940 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 56,782 psi | 89% | 2979 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,043 psi | 89% | 2897 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,028 psi | 88% | 3130 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,869 psi | 59% | 1877 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 55,376 psi | 87% | 2910 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 56,405 psi | 88% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 54,737 psi | 86% | 2917 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 90% | 56,884 psi | 89% | 3048 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2986 fps | 99.6% |
| Lovex S071 | <<locked>> | 94% | 57,580 psi | 90% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,507 psi | 89% | 2969 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,214 psi | 82% | 3012 fps | 100% |
| Norma MRP | <<locked>> | 86% | 55,564 psi | 87% | 3025 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,667 psi | 90% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 54,230 psi | 85% | 3012 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 56,579 psi | 89% | 2969 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 56,666 psi | 89% | 3002 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,740 psi | 61% | 1919 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 56,695 psi | 89% | 3117 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 56,231 psi | 88% | 3084 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 86% | 57,246 psi | 90% | 2959 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 56,101 psi | 88% | 2976 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,695 psi | 87% | 2972 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 55,143 psi | 86% | 2900 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 55,492 psi | 87% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,594 psi | 89% | 2946 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,101 psi | 88% | 2927 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 55,347 psi | 87% | 2949 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 86% | 55,970 psi | 88% | 2946 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 55,027 psi | 86% | 3025 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 92% | 55,912 psi | 88% | 3018 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 96% | 56,826 psi | 89% | 3084 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 96% | 53,925 psi | 85% | 3081 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 56,898 psi | 89% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,028 psi | 88% | 2940 fps | 100% |
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% | 43,105 psi | 68% | 2700 fps | 99.9% |
| Accurate High Country | <<locked>> | 80% | 46,760 psi | 73% | 2887 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 80% | 44,266 psi | 69% | 2825 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 46,456 psi | 73% | 2818 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 41,814 psi | 66% | 2762 fps | 97.6% |
| ADI AR 2217 | <<locked>> | 82% | 33,721 psi | 53% | 2562 fps | 95% |
| ADI AR 2218 | <<locked>> | 96% | 46,325 psi | 73% | 2940 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 29,095 psi | 46% | 2477 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,862 psi | 73% | 2818 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,862 psi | 73% | 2818 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,359 psi | 84% | 2927 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,427 psi | 73% | 2812 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,627 psi | 67% | 2772 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,524 psi | 65% | 2713 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,984 psi | 56% | 2654 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,630 psi | 73% | 2884 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 44,121 psi | 69% | 2874 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 47,108 psi | 74% | 2930 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,395 psi | 68% | 2733 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 39,827 psi | 62% | 2707 fps | 98% |
| Bofors RP30 | <<locked>> | 80% | 33,634 psi | 53% | 2585 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 42,627 psi | 67% | 2772 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 80% | 34,243 psi | 54% | 2582 fps | 96% |
| Hodgdon H4831 | <<locked>> | 80% | 44,440 psi | 70% | 2759 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,627 psi | 68% | 2743 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,357 psi | 79% | 2799 fps | 100% |
| Hodgdon Retumbo | 56.2 gr | 80% | 35,143 psi | 55% | 2690 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,340 psi | 44% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,040 psi | 82% | 2858 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,982 psi | 83% | 2867 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,469 psi | 71% | 2749 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 40,741 psi | 64% | 2746 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,621 psi | 54% | 2635 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 37,536 psi | 59% | 2582 fps | 99.3% |
| Norma 204 | <<locked>> | 80% | 53,011 psi | 83% | 2913 fps | 99.8% |
| Norma 217 | <<locked>> | 82% | 28,805 psi | 45% | 2487 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 45,281 psi | 71% | 2848 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 54,128 psi | 85% | 2904 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,683 psi | 64% | 2759 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 80% | 53,185 psi | 83% | 2917 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,666 psi | 57% | 2638 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,167 psi | 46% | 1716 fps | 100% |
| ReloadSwiss RS 76 | 60.2 gr | 80% | 34,447 psi | 54% | 2667 fps | 98.5% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 39,001 psi | 61% | 2753 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 47,558 psi | 75% | 2795 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 80% | 46,209 psi | 72% | 2805 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,847 psi | 72% | 2799 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 48,428 psi | 76% | 2782 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 51,967 psi | 81% | 2861 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,702 psi | 73% | 2782 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 80% | 40,843 psi | 64% | 2657 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 92% | 51,721 psi | 81% | 2887 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 46,209 psi | 72% | 2792 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,947 psi | 70% | 2838 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 80% | 37,797 psi | 59% | 2664 fps | 96.1% |
| Vihtavuori N568 | <<locked>> | 86% | 40,321 psi | 63% | 2769 fps | 95.6% |
| Vihtavuori N570 | 67.1 gr | 92% | 46,949 psi | 74% | 2946 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,465 psi | 62% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,975 psi | 67% | 2713 fps | 98.8% |
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 59 powders for 6.5 x 63 R Messner Mag. loaded with the .264 | 140gr | Lapua Naturalis. Hodgdon Retumbo delivers the highest muzzle velocity at 3,130 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,130 fps. ADI AR 2218 gives the best case fill at 100 %, and 59 of the 59 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 140.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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, Vihtavuori N570, ReloadSwiss RS 76 rank at the top here: for 6.5 x 63 R Messner Mag. with the .264 | 140gr | Lapua Naturalis 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.