Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .264 | 140gr | Speer Hot-Cor bullet and 63 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% | 54,621 psi | 86% | 2904 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 56,217 psi | 88% | 3064 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 57,101 psi | 89% | 3071 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 86% | 55,840 psi | 88% | 2992 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 54,201 psi | 85% | 3005 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 98% | 56,478 psi | 89% | 3041 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 3084 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3061 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,217 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 56,202 psi | 88% | 2979 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 55,593 psi | 87% | 2986 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 54,665 psi | 86% | 3002 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 56,275 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 56,333 psi | 88% | 3035 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 57,087 psi | 89% | 3058 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 53,896 psi | 84% | 3068 fps | 97.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 49,284 psi | 77% | 2979 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 54,882 psi | 86% | 2966 fps | 98% |
| Bofors RP15 | <<locked>> | 92% | 57,464 psi | 90% | 3048 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 56,144 psi | 88% | 3054 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 54,665 psi | 86% | 3002 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 53,998 psi | 85% | 3002 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 57,246 psi | 90% | 2999 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 56,202 psi | 88% | 2982 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 56,362 psi | 88% | 2897 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 55,259 psi | 87% | 3123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,637 psi | 59% | 1883 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 54,766 psi | 86% | 2910 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 55,259 psi | 87% | 2913 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 57,493 psi | 90% | 2972 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 56,289 psi | 88% | 3048 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 50,227 psi | 79% | 2976 fps | 99.5% |
| Lovex S070 | <<locked>> | 82% | 57,029 psi | 89% | 2940 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 56,159 psi | 88% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,825 psi | 87% | 2969 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 3002 fps | 100% |
| Norma MRP | <<locked>> | 86% | 54,520 psi | 85% | 3015 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,956 psi | 89% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 57,363 psi | 90% | 3071 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 55,796 psi | 87% | 2966 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 55,883 psi | 88% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,653 psi | 61% | 1929 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 57,566 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 56,202 psi | 88% | 3117 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 55,419 psi | 87% | 3077 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 56,579 psi | 89% | 2963 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 55,230 psi | 87% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,029 psi | 89% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 57,319 psi | 90% | 2890 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 54,839 psi | 86% | 2969 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 54,186 psi | 85% | 2894 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 54,607 psi | 86% | 2907 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 55,535 psi | 87% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 55,376 psi | 87% | 2927 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 54,418 psi | 85% | 2946 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 82% | 57,682 psi | 90% | 2949 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 54,810 psi | 86% | 2940 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 54,070 psi | 85% | 3018 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 92% | 54,766 psi | 86% | 3009 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 96% | 55,970 psi | 88% | 3077 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 57,043 psi | 89% | 3140 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 90% | 55,956 psi | 88% | 3054 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 55,303 psi | 87% | 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% | 41,800 psi | 66% | 2684 fps | 99.9% |
| Accurate High Country | <<locked>> | 80% | 45,730 psi | 72% | 2874 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 80% | 43,192 psi | 68% | 2812 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 80% | 45,803 psi | 72% | 2815 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 41,031 psi | 64% | 2753 fps | 97.4% |
| ADI AR 2217 | <<locked>> | 84% | 35,027 psi | 55% | 2612 fps | 95.7% |
| ADI AR 2218 | <<locked>> | 96% | 45,397 psi | 71% | 2930 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 28,007 psi | 44% | 2451 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,151 psi | 72% | 2815 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 52,605 psi | 82% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,730 psi | 72% | 2808 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,713 psi | 65% | 2762 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,596 psi | 64% | 2703 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,998 psi | 55% | 2638 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 45,687 psi | 72% | 2874 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 46,325 psi | 73% | 2927 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 98% | 45,818 psi | 72% | 2910 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 45,426 psi | 71% | 2789 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 38,928 psi | 61% | 2697 fps | 97.9% |
| Bofors RP30 | <<locked>> | 82% | 34,853 psi | 55% | 2625 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 41,713 psi | 65% | 2762 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 80% | 33,156 psi | 52% | 2562 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 80% | 43,685 psi | 68% | 2756 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,873 psi | 67% | 2740 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 49,414 psi | 77% | 2795 fps | 100% |
| Hodgdon Retumbo | 57.3 gr | 80% | 34,156 psi | 54% | 2674 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 44% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,488 psi | 81% | 2858 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 51,880 psi | 81% | 2861 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,831 psi | 70% | 2749 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 80% | 39,697 psi | 62% | 2733 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 88% | 33,359 psi | 52% | 2608 fps | 95% |
| Lovex S070 | <<locked>> | 80% | 53,563 psi | 84% | 2887 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 36,056 psi | 56% | 2562 fps | 99.1% |
| Norma 204 | <<locked>> | 80% | 52,112 psi | 82% | 2910 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 29,283 psi | 46% | 2510 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 44,280 psi | 69% | 2835 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 53,417 psi | 84% | 2904 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 39,740 psi | 62% | 2749 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 80% | 52,170 psi | 82% | 2910 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 35,549 psi | 56% | 2618 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,037 psi | 46% | 1726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 53,635 psi | 84% | 2972 fps | 100% |
| ReloadSwiss RS 76 | 61.3 gr | 80% | 33,243 psi | 52% | 2644 fps | 98.1% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 37,971 psi | 60% | 2736 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 46,731 psi | 73% | 2789 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 45,397 psi | 71% | 2799 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 53,563 psi | 84% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,824 psi | 84% | 2838 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,049 psi | 71% | 2795 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 47,529 psi | 74% | 2779 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 51,111 psi | 80% | 2854 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,687 psi | 72% | 2772 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 80% | 39,914 psi | 63% | 2651 fps | 98.7% |
| Vihtavuori N170 | <<locked>> | 92% | 50,850 psi | 80% | 2884 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 53,969 psi | 85% | 2897 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 45,107 psi | 71% | 2782 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,048 psi | 69% | 2828 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 80% | 36,419 psi | 57% | 2641 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 86% | 39,305 psi | 62% | 2753 fps | 95.3% |
| Vihtavuori N570 | 68.4 gr | 92% | 46,093 psi | 72% | 2940 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 38,159 psi | 60% | 2756 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,090 psi | 66% | 2703 fps | 98.7% |
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 63 powders for 6.5 x 63 Messner Mag. loaded with the .264 | 140gr | Speer Hot-Cor. Vihtavuori N570 delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,140 fps. ADI AR 2218 gives the best case fill at 100 %, and 63 of the 63 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 1:10.5 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 Messner Mag. with the .264 | 140gr | Speer Hot-Cor 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.