Load Specifications
Load data in caliber 6.5 x 68 with .263 | 139gr | Prvi Partizan FMJ BT bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo 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% | 55,448 psi | 87% | 2927 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 54,317 psi | 85% | 3035 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 86% | 56,681 psi | 89% | 3015 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 55,071 psi | 86% | 3031 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 98% | 57,464 psi | 90% | 3064 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 53,621 psi | 84% | 3114 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 55,970 psi | 88% | 3084 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,782 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 56,956 psi | 89% | 2999 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,173 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,535 psi | 87% | 3025 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,159 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,450 psi | 90% | 3061 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 54,027 psi | 85% | 3018 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 55,013 psi | 86% | 3094 fps | 98% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 50,633 psi | 79% | 3012 fps | 96.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 55,680 psi | 87% | 2989 fps | 98.2% |
| Bofors RP15 | <<locked>> | 90% | 54,737 psi | 86% | 3012 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 57,188 psi | 90% | 3077 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 55,535 psi | 87% | 3025 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 54,969 psi | 86% | 3025 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 54,172 psi | 85% | 2959 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,000 psi | 89% | 3005 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,058 psi | 89% | 2917 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,391 psi | 88% | 3153 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,710 psi | 59% | 1896 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 55,376 psi | 87% | 2930 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 56,202 psi | 88% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 54,810 psi | 86% | 2940 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 90% | 57,159 psi | 90% | 3071 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,227 psi | 80% | 3002 fps | 99.6% |
| Lovex S070 | <<locked>> | 82% | 57,638 psi | 90% | 2963 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,000 psi | 89% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,666 psi | 89% | 2992 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 3025 fps | 100% |
| Norma MRP | <<locked>> | 86% | 55,651 psi | 87% | 3041 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,667 psi | 90% | 2976 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 54,375 psi | 85% | 3031 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 56,652 psi | 89% | 2989 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 56,971 psi | 89% | 3025 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,725 psi | 61% | 1942 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 57,217 psi | 90% | 3140 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 56,652 psi | 89% | 3107 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 86% | 57,377 psi | 90% | 2986 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 56,130 psi | 88% | 2995 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,638 psi | 90% | 2963 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,738 psi | 87% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 55,114 psi | 86% | 2920 fps | 99.4% |
| Somchem S365 | <<locked>> | 82% | 55,332 psi | 87% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,347 psi | 88% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,144 psi | 88% | 2949 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 55,259 psi | 87% | 2969 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 86% | 55,477 psi | 87% | 2959 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 55,143 psi | 86% | 3045 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 92% | 55,796 psi | 87% | 3035 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 96% | 57,174 psi | 90% | 3107 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 96% | 54,302 psi | 85% | 3100 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,290 psi | 90% | 3081 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,086 psi | 88% | 2959 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% | 42,409 psi | 66% | 2707 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 43,990 psi | 69% | 2835 fps | 97.2% |
| ADI AR 2209 | <<locked>> | 80% | 46,470 psi | 73% | 2838 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 41,611 psi | 65% | 2776 fps | 97.6% |
| ADI AR 2217 | <<locked>> | 84% | 35,505 psi | 56% | 2631 fps | 96% |
| ADI AR 2218 | <<locked>> | 96% | 46,325 psi | 73% | 2963 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 28,456 psi | 45% | 2474 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,760 psi | 73% | 2838 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,388 psi | 84% | 2946 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,325 psi | 73% | 2828 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,337 psi | 66% | 2782 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,104 psi | 64% | 2723 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,607 psi | 56% | 2661 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,383 psi | 73% | 2894 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 43,918 psi | 69% | 2884 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 98% | 46,876 psi | 73% | 2940 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,221 psi | 68% | 2749 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 39,537 psi | 62% | 2720 fps | 98.1% |
| Bofors RP30 | <<locked>> | 80% | 33,112 psi | 52% | 2585 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 42,337 psi | 66% | 2782 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 80% | 33,808 psi | 53% | 2589 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 80% | 44,266 psi | 69% | 2776 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,453 psi | 68% | 2759 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,154 psi | 79% | 2815 fps | 100% |
| Hodgdon Retumbo | 58.2 gr | 80% | 34,722 psi | 54% | 2697 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,268 psi | 44% | 1693 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,098 psi | 82% | 2877 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,547 psi | 82% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,382 psi | 71% | 2769 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 40,524 psi | 64% | 2759 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,069 psi | 53% | 2631 fps | 95.4% |
| Lovex S070 | <<locked>> | 80% | 54,201 psi | 85% | 2910 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 36,680 psi | 57% | 2582 fps | 99.2% |
| Norma 204 | <<locked>> | 80% | 52,968 psi | 83% | 2933 fps | 99.9% |
| Norma 217 | <<locked>> | 84% | 29,965 psi | 47% | 2539 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 44,933 psi | 70% | 2858 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 54,114 psi | 85% | 2923 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,364 psi | 63% | 2769 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 80% | 53,011 psi | 83% | 2933 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,289 psi | 57% | 2644 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,051 psi | 46% | 1736 fps | 100% |
| ReloadSwiss RS 76 | 62.3 gr | 80% | 33,910 psi | 53% | 2671 fps | 98.3% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 38,653 psi | 61% | 2759 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 47,326 psi | 74% | 2812 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 80% | 46,050 psi | 72% | 2822 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 54,201 psi | 85% | 2910 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,701 psi | 72% | 2818 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 48,240 psi | 76% | 2799 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 51,866 psi | 81% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,311 psi | 73% | 2795 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 80% | 40,509 psi | 63% | 2671 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 92% | 51,677 psi | 81% | 2910 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 45,832 psi | 72% | 2802 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,657 psi | 70% | 2851 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 80% | 37,130 psi | 58% | 2664 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 86% | 40,001 psi | 63% | 2776 fps | 95.5% |
| Vihtavuori N570 | 69.5 gr | 92% | 47,065 psi | 74% | 2966 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,146 psi | 61% | 2782 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,641 psi | 67% | 2723 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 68 loaded with the .263 | 139gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,153 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 139.0 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 6.5 x 68 with the .263 | 139gr | Prvi Partizan FMJ BT 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.