Load Specifications
Load data in caliber 6.5 x 63 Messner Mag. with .263 | 140gr | Rhino Solid Shank bullet and 64 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% | 54,389 psi | 85% | 2904 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 55,985 psi | 88% | 3061 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 56,884 psi | 89% | 3068 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 86% | 55,840 psi | 88% | 2992 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 54,012 psi | 85% | 3002 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 98% | 56,289 psi | 88% | 3038 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 3081 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 3058 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 55,985 psi | 88% | 2986 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 55,985 psi | 88% | 2986 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 55,970 psi | 88% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 55,390 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 54,491 psi | 85% | 2999 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 56,028 psi | 88% | 2959 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 56,101 psi | 88% | 3031 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 56,840 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 53,693 psi | 84% | 3064 fps | 97.7% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 49,139 psi | 77% | 2976 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 54,723 psi | 86% | 2963 fps | 98% |
| Bofors RP15 | <<locked>> | 92% | 57,246 psi | 90% | 3045 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 55,941 psi | 88% | 3048 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 54,491 psi | 85% | 2999 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 53,795 psi | 84% | 2999 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 88% | 57,058 psi | 89% | 2995 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 56,028 psi | 88% | 2979 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 56,115 psi | 88% | 2894 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 55,027 psi | 86% | 3120 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,565 psi | 59% | 1880 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 54,563 psi | 86% | 2907 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 55,288 psi | 87% | 2913 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 57,551 psi | 90% | 2972 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 56,072 psi | 88% | 3045 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 50,024 psi | 78% | 2972 fps | 99.5% |
| Lovex S070 | <<locked>> | 82% | 56,797 psi | 89% | 2936 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 55,941 psi | 88% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,608 psi | 87% | 2966 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 50,763 psi | 80% | 2995 fps | 100% |
| Norma MRP | <<locked>> | 86% | 54,288 psi | 85% | 3012 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,724 psi | 89% | 2953 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 57,145 psi | 90% | 3064 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 55,593 psi | 87% | 2963 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 55,680 psi | 87% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,595 psi | 60% | 1926 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 57,319 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 55,680 psi | 87% | 3110 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 55,216 psi | 87% | 3077 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 56,362 psi | 88% | 2956 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 55,013 psi | 86% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 56,797 psi | 89% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 57,377 psi | 90% | 2890 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 54,621 psi | 86% | 2963 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 54,259 psi | 85% | 2894 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 54,346 psi | 85% | 2904 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 55,303 psi | 87% | 2936 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 55,216 psi | 87% | 2923 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 54,259 psi | 85% | 2943 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 82% | 57,464 psi | 90% | 2949 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 54,563 psi | 86% | 2940 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,711 psi | 90% | 3077 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 54,563 psi | 86% | 3005 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 96% | 55,782 psi | 87% | 3077 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 98% | 56,869 psi | 89% | 3136 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 90% | 55,666 psi | 87% | 3051 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 55,085 psi | 86% | 2936 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% | 41,568 psi | 65% | 2680 fps | 99.8% |
| Accurate High Country | <<locked>> | 80% | 45,542 psi | 71% | 2871 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 80% | 43,004 psi | 67% | 2808 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 80% | 45,600 psi | 71% | 2812 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 40,828 psi | 64% | 2749 fps | 97.3% |
| ADI AR 2217 | <<locked>> | 84% | 34,867 psi | 55% | 2605 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 96% | 45,281 psi | 71% | 2927 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 27,876 psi | 44% | 2448 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,963 psi | 72% | 2812 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,963 psi | 72% | 2812 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 52,388 psi | 82% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,527 psi | 71% | 2805 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,495 psi | 65% | 2756 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,408 psi | 63% | 2700 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,838 psi | 55% | 2635 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 45,440 psi | 71% | 2867 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 46,137 psi | 72% | 2923 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 45,614 psi | 71% | 2907 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 45,266 psi | 71% | 2782 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 38,725 psi | 61% | 2694 fps | 97.8% |
| Bofors RP30 | <<locked>> | 82% | 34,650 psi | 54% | 2621 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 41,495 psi | 65% | 2756 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 80% | 33,141 psi | 52% | 2559 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 80% | 43,497 psi | 68% | 2753 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,670 psi | 67% | 2736 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 49,429 psi | 77% | 2795 fps | 100% |
| Hodgdon Retumbo | 57.1 gr | 80% | 34,011 psi | 53% | 2667 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,166 psi | 44% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,271 psi | 80% | 2854 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 51,895 psi | 81% | 2861 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,657 psi | 70% | 2746 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 39,711 psi | 62% | 2733 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 90% | 35,549 psi | 56% | 2667 fps | 96% |
| Lovex S070 | <<locked>> | 80% | 53,345 psi | 84% | 2884 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,868 psi | 56% | 2556 fps | 99.1% |
| Norma 204 | <<locked>> | 80% | 52,141 psi | 82% | 2907 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 29,269 psi | 46% | 2513 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 44,063 psi | 69% | 2831 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 53,185 psi | 83% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 39,523 psi | 62% | 2740 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 80% | 52,185 psi | 82% | 2907 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 35,534 psi | 56% | 2618 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,950 psi | 45% | 1722 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 53,403 psi | 84% | 2969 fps | 100% |
| ReloadSwiss RS 76 | 61.1 gr | 80% | 33,098 psi | 52% | 2641 fps | 98% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 37,797 psi | 59% | 2733 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 46,514 psi | 73% | 2785 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 45,165 psi | 71% | 2795 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 53,345 psi | 84% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,635 psi | 84% | 2835 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,831 psi | 70% | 2792 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 47,369 psi | 74% | 2772 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 50,865 psi | 80% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,498 psi | 71% | 2769 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 39,755 psi | 62% | 2648 fps | 98.6% |
| Vihtavuori N170 | <<locked>> | 92% | 50,676 psi | 79% | 2881 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 53,998 psi | 85% | 2897 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,860 psi | 70% | 2776 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,845 psi | 69% | 2825 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 80% | 36,405 psi | 57% | 2638 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 86% | 39,131 psi | 61% | 2749 fps | 95.2% |
| Vihtavuori N570 | 68.2 gr | 92% | 45,905 psi | 72% | 2936 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 38,087 psi | 60% | 2756 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,887 psi | 66% | 2700 fps | 98.6% |
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 64 powders for 6.5 x 63 Messner Mag. loaded with the .263 | 140gr | Rhino Solid Shank. Vihtavuori N570 delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,880 fps to 3,136 fps. ADI AR 2218 gives the best case fill at 100 %, and 64 of the 64 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 0.263" calls for a 1:10.0 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 Messner Mag. with the .263 | 140gr | Rhino Solid Shank 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.