Load Specifications
Load data in caliber 6.5 x 68 with .263 | 139gr | Prvi Partizan SP BT bullet and 58 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% | 55,564 psi | 87% | 2930 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 54,418 psi | 85% | 3035 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 86% | 57,072 psi | 89% | 3022 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 55,129 psi | 86% | 3031 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 98% | 57,522 psi | 90% | 3068 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 3120 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,289 psi | 88% | 3091 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 57,145 psi | 90% | 3018 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,116 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,521 psi | 89% | 3009 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,593 psi | 87% | 3025 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,566 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,566 psi | 90% | 3064 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 54,143 psi | 85% | 3022 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 55,564 psi | 87% | 3104 fps | 98.1% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 50,908 psi | 80% | 3015 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 55,970 psi | 88% | 2995 fps | 98.3% |
| Bofors RP15 | <<locked>> | 90% | 55,085 psi | 86% | 3018 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 57,537 psi | 90% | 3084 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 55,593 psi | 87% | 3025 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 55,347 psi | 87% | 3031 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 54,534 psi | 85% | 2966 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,058 psi | 89% | 3009 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,450 psi | 90% | 2923 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,782 psi | 89% | 3156 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 59% | 1896 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 55,738 psi | 87% | 2936 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 56,304 psi | 88% | 2940 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 55,129 psi | 86% | 2946 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 90% | 57,522 psi | 90% | 3077 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,532 psi | 81% | 3005 fps | 99.6% |
| Lovex S070 | <<locked>> | 82% | 57,740 psi | 90% | 2963 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,334 psi | 90% | 2956 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,768 psi | 89% | 2995 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,634 psi | 82% | 3031 fps | 100% |
| Norma MRP | <<locked>> | 86% | 55,738 psi | 87% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 54,781 psi | 86% | 3038 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 56,753 psi | 89% | 2989 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,290 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,740 psi | 61% | 1942 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 57,595 psi | 90% | 3143 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 56,971 psi | 89% | 3114 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 86% | 57,479 psi | 90% | 2986 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 56,217 psi | 88% | 2999 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,740 psi | 90% | 2963 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,825 psi | 87% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 55,187 psi | 86% | 2920 fps | 99.4% |
| Somchem S365 | <<locked>> | 82% | 55,738 psi | 87% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,681 psi | 89% | 2969 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,478 psi | 89% | 2953 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 55,535 psi | 87% | 2976 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 86% | 55,883 psi | 88% | 2966 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 55,245 psi | 87% | 3048 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 92% | 56,130 psi | 88% | 3041 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 96% | 57,522 psi | 90% | 3110 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 96% | 54,636 psi | 86% | 3107 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,450 psi | 90% | 3081 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,391 psi | 88% | 2966 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% | 42,554 psi | 67% | 2710 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 44,121 psi | 69% | 2841 fps | 97.2% |
| ADI AR 2209 | <<locked>> | 80% | 46,586 psi | 73% | 2841 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 41,945 psi | 66% | 2782 fps | 97.7% |
| ADI AR 2217 | <<locked>> | 82% | 33,344 psi | 52% | 2572 fps | 95% |
| ADI AR 2218 | <<locked>> | 96% | 46,586 psi | 73% | 2969 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 28,660 psi | 45% | 2480 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,891 psi | 73% | 2841 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,548 psi | 84% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,456 psi | 73% | 2831 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,656 psi | 67% | 2789 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,423 psi | 65% | 2730 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,723 psi | 56% | 2664 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,746 psi | 73% | 2897 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 44,222 psi | 69% | 2890 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 98% | 47,166 psi | 74% | 2943 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,308 psi | 68% | 2753 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 39,668 psi | 62% | 2723 fps | 98.1% |
| Bofors RP30 | <<locked>> | 80% | 33,243 psi | 52% | 2589 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 42,656 psi | 67% | 2789 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 80% | 33,910 psi | 53% | 2592 fps | 96% |
| Hodgdon H4831 | <<locked>> | 80% | 44,367 psi | 70% | 2779 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,743 psi | 69% | 2766 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,299 psi | 79% | 2818 fps | 100% |
| Hodgdon Retumbo | 58.5 gr | 80% | 34,998 psi | 55% | 2707 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,311 psi | 44% | 1696 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,214 psi | 82% | 2881 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,939 psi | 83% | 2887 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,498 psi | 71% | 2772 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 80% | 40,625 psi | 64% | 2762 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,345 psi | 54% | 2641 fps | 95.5% |
| Lovex S070 | <<locked>> | 80% | 54,346 psi | 85% | 2910 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 36,796 psi | 58% | 2585 fps | 99.3% |
| Norma 204 | <<locked>> | 80% | 53,084 psi | 83% | 2936 fps | 99.9% |
| Norma 217 | <<locked>> | 84% | 30,052 psi | 47% | 2539 fps | 96% |
| Norma MRP | <<locked>> | 80% | 45,281 psi | 71% | 2864 fps | 99.8% |
| Ramshot Grand | <<locked>> | 80% | 40,698 psi | 64% | 2776 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 80% | 53,127 psi | 83% | 2936 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,564 psi | 57% | 2651 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,109 psi | 46% | 1739 fps | 100% |
| ReloadSwiss RS 76 | 62.6 gr | 80% | 34,171 psi | 54% | 2677 fps | 98.5% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 38,972 psi | 61% | 2766 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 47,442 psi | 74% | 2815 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 80% | 46,166 psi | 72% | 2825 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 54,346 psi | 85% | 2910 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,818 psi | 72% | 2818 fps | 99.4% |
| Somchem S361 | <<locked>> | 80% | 48,327 psi | 76% | 2805 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 51,996 psi | 81% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,644 psi | 73% | 2802 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 40,611 psi | 64% | 2674 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 92% | 51,996 psi | 81% | 2913 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 45,963 psi | 72% | 2805 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,991 psi | 71% | 2858 fps | 98% |
| Vihtavuori N565 | <<locked>> | 80% | 37,275 psi | 58% | 2667 fps | 96% |
| Vihtavuori N568 | <<locked>> | 86% | 40,321 psi | 63% | 2785 fps | 95.7% |
| Vihtavuori N570 | 69.8 gr | 92% | 47,398 psi | 74% | 2969 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,320 psi | 62% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,960 psi | 67% | 2730 fps | 98.9% |
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 58 powders for 6.5 x 68 loaded with the .263 | 139gr | Prvi Partizan SP BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,156 fps. ADI AR 2218 gives the best case fill at 100 %, and 58 of the 58 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 1:10.5 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 6.5 x 68 with the .263 | 139gr | Prvi Partizan SP 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.