Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .264 | 139gr | Fox Classic Hunter bullet and 72 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 IMR 7828 SSC.
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% | 57,580 psi | 90% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,694 psi | 86% | 2927 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,608 psi | 89% | 3068 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 88% | 55,709 psi | 87% | 2995 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 53,809 psi | 84% | 3005 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,680 psi | 87% | 3035 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2992 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 55,811 psi | 87% | 2992 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 55,811 psi | 87% | 2992 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,941 psi | 88% | 2982 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,172 psi | 86% | 2982 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,056 psi | 85% | 3002 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,521 psi | 87% | 2963 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,230 psi | 87% | 3031 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,927 psi | 88% | 3054 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3054 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,940 psi | 86% | 2969 fps | 97.7% |
| Bofors RP15 | <<locked>> | 94% | 56,753 psi | 89% | 3041 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 55,027 psi | 86% | 3045 fps | 99.8% |
| Bofors RP5 | <<locked>> | 90% | 54,056 psi | 85% | 3002 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 56,275 psi | 88% | 2923 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,334 psi | 90% | 3058 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 56,231 psi | 88% | 2982 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,174 psi | 90% | 3002 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,043 psi | 88% | 2982 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,144 psi | 88% | 2904 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,346 psi | 85% | 3120 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,927 psi | 89% | 3022 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 59% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,839 psi | 86% | 2917 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,940 psi | 86% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,114 psi | 85% | 2920 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 92% | 55,593 psi | 87% | 3045 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,310 psi | 71% | 2897 fps | 98.6% |
| Lovex S065 | <<locked>> | 82% | 54,940 psi | 86% | 2890 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,898 psi | 89% | 2946 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,071 psi | 86% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,985 psi | 88% | 2976 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 45,934 psi | 72% | 2923 fps | 99.9% |
| Norma MRP | <<locked>> | 88% | 54,012 psi | 85% | 3018 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,753 psi | 89% | 2963 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,884 psi | 89% | 3071 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 55,738 psi | 87% | 2972 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,056 psi | 86% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,145 psi | 60% | 1909 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,737 psi | 86% | 2949 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,537 psi | 90% | 3038 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,911 psi | 86% | 3110 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 53,940 psi | 85% | 3064 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 88% | 56,594 psi | 89% | 2966 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 88% | 54,882 psi | 86% | 2976 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 56,275 psi | 88% | 2923 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,940 psi | 86% | 2890 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,898 psi | 89% | 2946 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,537 psi | 90% | 2897 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,491 psi | 85% | 2969 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 54,288 psi | 85% | 2897 fps | 99.1% |
| Somchem S365 | <<locked>> | 84% | 54,027 psi | 85% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,201 psi | 87% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,839 psi | 86% | 2900 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,071 psi | 86% | 2927 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 57,609 psi | 90% | 2999 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 84% | 57,624 psi | 90% | 2959 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,450 psi | 90% | 2989 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,522 psi | 90% | 3081 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 96% | 57,667 psi | 90% | 3064 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 54,781 psi | 86% | 3068 fps | 98.8% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3130 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,128 psi | 85% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,507 psi | 89% | 2989 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,360 psi | 85% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,085 psi | 86% | 2940 fps | 99.9% |
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% | 38,116 psi | 60% | 2618 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 50,952 psi | 80% | 2867 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 39,378 psi | 62% | 2736 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 42,511 psi | 67% | 2759 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 80% | 37,913 psi | 59% | 2687 fps | 96.1% |
| ADI AR 2217 | <<locked>> | 88% | 36,782 psi | 58% | 2661 fps | 96% |
| ADI AR 2225 | <<locked>> | 84% | 28,993 psi | 45% | 2493 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,888 psi | 67% | 2759 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,888 psi | 67% | 2759 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,081 psi | 77% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,496 psi | 67% | 2753 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,305 psi | 60% | 2697 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,999 psi | 58% | 2644 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,865 psi | 50% | 2566 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,307 psi | 65% | 2805 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 45,237 psi | 71% | 2913 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,498 psi | 71% | 2792 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 35,578 psi | 56% | 2628 fps | 96.5% |
| Bofors RP30 | <<locked>> | 84% | 33,663 psi | 53% | 2608 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 38,305 psi | 60% | 2697 fps | 97.6% |
| Bofors RP7 | <<locked>> | 80% | 52,881 psi | 83% | 2874 fps | 100% |
| Hodgdon H1000 | <<locked>> | 84% | 35,027 psi | 55% | 2618 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 52,576 psi | 82% | 2927 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,335 psi | 63% | 2690 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,740 psi | 62% | 2677 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,977 psi | 72% | 2749 fps | 100% |
| Hodgdon Retumbo | 54.9 gr | 80% | 31,111 psi | 49% | 2589 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 52,881 psi | 83% | 2959 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,992 psi | 44% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,283 psi | 76% | 2808 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 48,167 psi | 75% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,930 psi | 66% | 2690 fps | 96.9% |
| IMR 7828 SSC | 54.8 gr | 80% | 36,492 psi | 57% | 2664 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,374 psi | 54% | 2648 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 51,692 psi | 81% | 2838 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,096 psi | 79% | 2838 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,648 psi | 51% | 2490 fps | 98.1% |
| Norma 204 | <<locked>> | 80% | 48,820 psi | 77% | 2858 fps | 99.4% |
| Norma 217 | <<locked>> | 88% | 29,979 psi | 47% | 2546 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 40,466 psi | 63% | 2769 fps | 99.1% |
| Norma URP | <<locked>> | 80% | 49,777 psi | 78% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,201 psi | 57% | 2671 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 48,733 psi | 76% | 2861 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,184 psi | 50% | 2543 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,543 psi | 45% | 1709 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,111 psi | 80% | 2894 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,458 psi | 78% | 2913 fps | 100% |
| ReloadSwiss RS 76 | 58.7 gr | 80% | 30,023 psi | 47% | 2556 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 39,494 psi | 62% | 2785 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 43,555 psi | 68% | 2733 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 80% | 41,916 psi | 66% | 2740 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 80% | 52,881 psi | 83% | 2874 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,692 psi | 81% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,096 psi | 79% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,575 psi | 79% | 2789 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,582 psi | 65% | 2733 fps | 98.4% |
| Somchem S361 | <<locked>> | 80% | 44,251 psi | 69% | 2720 fps | 97.3% |
| Somchem S365 | <<locked>> | 80% | 47,137 psi | 74% | 2805 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,308 psi | 66% | 2713 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 51,242 psi | 80% | 2844 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,753 psi | 58% | 2589 fps | 97.6% |
| Vihtavuori N170 | <<locked>> | 96% | 53,838 psi | 84% | 2940 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 50,517 psi | 79% | 2851 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,191 psi | 65% | 2720 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,451 psi | 63% | 2759 fps | 96.4% |
| Vihtavuori N565 | <<locked>> | 84% | 38,058 psi | 60% | 2690 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 90% | 40,944 psi | 64% | 2802 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 96% | 48,356 psi | 76% | 2995 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,415 psi | 79% | 2799 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,823 psi | 83% | 2930 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,968 psi | 53% | 2684 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,696 psi | 61% | 2638 fps | 97.6% |
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 72 powders for 6.5 x 63 Messner Mag. loaded with the .264 | 139gr | Fox Classic Hunter. Vihtavuori N570 delivers the highest muzzle velocity at 3,130 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,130 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 139.0 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, Alliant Reloder-33 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, IMR 7828 SSC rank at the top here: for 6.5 x 63 Messner Mag. with the .264 | 139gr | Fox Classic Hunter 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.