Load data for 6.5 x 68 R + .264 | 139gr | Brenneke TOG

6.5 x 68 R cartridge drawing
Brenneke logo

Load Specifications

Bullet Manufacturer:Brenneke
Bullet Weight:139 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Case Length (l3):2.657"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:83 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:56,565 psi
Recommended Twist Rate:1:9.5

Load data in caliber 6.5 x 68 R with .264 | 139gr | Brenneke TOG bullet and 47 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 Vihtavuori N568.

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"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>86%49,603 psi88%2825 fps100%
Accurate MAGPRO<<locked>>84%48,240 psi85%2910 fps97.9%
ADI AR 2209<<locked>>84%50,981 psi90%2910 fps99.7%
ADI AR 2213<<locked>>86%49,197 psi87%2917 fps99%
ADI AR 2217<<locked>>96%50,894 psi90%2946 fps99.5%
ADI AR 2218ᴾ<<locked>>100%50,952 psi90%3041 fps96.8%
ADI AR 2225<<locked>>98%49,356 psi87%2969 fps100%
Alliant Power Pro Varmint<<locked>>82%47,950 psi85%2844 fps99.4%
Alliant Power Pro Varmint<<locked>>82%47,950 psi85%2844 fps99.4%
Alliant Reloder-19<<locked>>84%50,691 psi90%2900 fps99.7%
Alliant Reloder-22<<locked>>86%49,748 psi88%2917 fps99.7%
Alliant Reloder-23<<locked>>86%47,993 psi85%2838 fps100%
Alliant Reloder-25<<locked>>92%50,865 psi90%2953 fps100%
Alliant Reloder-26<<locked>>82%47,500 psi84%2907 fps100%
Alliant Reloder-33<<locked>>96%48,095 psi85%2963 fps96.2%
Baschieri & Pellagri 109<<locked>>88%50,270 psi89%2877 fps96.8%
Bofors RP15<<locked>>88%49,052 psi87%2904 fps99.5%
Bofors RP30<<locked>>94%50,850 psi90%2966 fps99.5%
Bofors RP5<<locked>>86%49,748 psi88%2917 fps99.7%
Hodgdon H1000<<locked>>92%48,805 psi86%2910 fps99.5%
Hodgdon H4831<<locked>>84%48,602 psi86%2848 fps98.3%
Hodgdon H4831 SC<<locked>>84%47,674 psi84%2831 fps98.1%
Hodgdon Retumbo<<locked>>92%49,821 psi88%3028 fps100%
Hodgdon TrailBossᴾ<<locked>>100%37,492 psi66%1873 fps100%
IMR 4955 Enduron<<locked>>84%49,690 psi88%2838 fps98.6%
IMR 7828 SSC<<locked>>88%51,053 psi90%2959 fps99.3%
IMR 8133 Enduronᴾ<<locked>>100%48,341 psi85%2940 fps99.1%
Lovex S071<<locked>>90%48,211 psi85%2802 fps100%
Norma 217ᴾ<<locked>>100%49,182 psi87%2969 fps100%
Norma MRP<<locked>>84%49,472 psi87%2933 fps100%
Ramshot Grand<<locked>>86%47,935 psi85%2913 fps99.1%
Ramshot Magnum<<locked>>90%50,154 psi89%2910 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%38,522 psi68%1919 fps100%
ReloadSwiss RS 76<<locked>>92%49,937 psi88%3015 fps100%
ReloadSwiss RS 80<<locked>>94%49,371 psi87%2972 fps98.4%
Rottweil R 904<<locked>>82%48,573 psi86%2822 fps98.8%
Rottweil R 905<<locked>>84%50,415 psi89%2890 fps99.7%
SNPE Vectan Tubal 8000<<locked>>84%50,038 psi88%2887 fps99.7%
Somchem S361<<locked>>82%49,530 psi88%2812 fps98.4%
Somchem S385<<locked>>84%50,676 psi90%2861 fps99.9%
Vihtavuori N165<<locked>>88%50,546 psi89%2848 fps99.9%
Vihtavuori N555<<locked>>84%49,937 psi88%2864 fps100%
Vihtavuori N560<<locked>>84%49,182 psi87%2927 fps98.6%
Vihtavuori N565<<locked>>90%49,734 psi88%2920 fps98.9%
Vihtavuori N568<<locked>>94%50,488 psi89%2982 fps98.1%
Winchester StaBALL HD<<locked>>88%49,966 psi88%2972 fps100%
Winchester Supreme 780<<locked>>86%50,357 psi89%2858 fps99.6%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 25.6"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>80%40,538 psi72%2657 fps99.7%
Accurate MAGPRO<<locked>>80%41,756 psi74%2779 fps96.2%
ADI AR 2209<<locked>>80%44,498 psi79%2785 fps98.9%
ADI AR 2213<<locked>>80%39,827 psi70%2723 fps96.8%
ADI AR 2217<<locked>>86%36,448 psi64%2641 fps96%
ADI AR 2218<<locked>>98%47,311 psi84%2966 fps95.6%
ADI AR 2225<<locked>>82%28,979 psi51%2480 fps95.8%
Alliant Power Pro Varmint<<locked>>80%44,875 psi79%2789 fps98.9%
Alliant Power Pro Varmint<<locked>>80%44,875 psi79%2789 fps98.9%
Alliant Reloder-19<<locked>>80%44,469 psi79%2782 fps98.9%
Alliant Reloder-22<<locked>>80%40,437 psi71%2733 fps98.2%
Alliant Reloder-23<<locked>>80%39,233 psi69%2677 fps100%
Alliant Reloder-25<<locked>>80%33,852 psi60%2608 fps99.2%
Alliant Reloder-26<<locked>>80%44,034 psi78%2844 fps100%
Alliant Reloder-33<<locked>>94%44,672 psi79%2890 fps95.1%
Baschieri & Pellagri 109<<locked>>84%44,411 psi79%2759 fps95.1%
Bofors RP15<<locked>>80%37,681 psi67%2667 fps97.3%
Bofors RP30<<locked>>82%33,634 psi59%2595 fps95.1%
Bofors RP5<<locked>>80%40,437 psi71%2733 fps98.2%
Hodgdon H1000<<locked>>82%34,606 psi61%2598 fps95.9%
Hodgdon H4831<<locked>>80%42,482 psi75%2726 fps96.9%
Hodgdon H4831 SC<<locked>>80%41,684 psi74%2710 fps96.7%
Hodgdon Retumbo55.9 gr80%33,069 psi58%2638 fps96.5%
Hodgdon TrailBoss<<locked>>80%28,108 psi50%1673 fps100%
IMR 4955 Enduron<<locked>>80%43,700 psi77%2720 fps97.4%
IMR 7828 SSC<<locked>>80%38,667 psi68%2707 fps96.5%
IMR 8133 Enduron<<locked>>90%34,418 psi61%2635 fps95.2%
Lovex S071<<locked>>80%34,998 psi62%2533 fps98.7%
Norma 217<<locked>>86%30,284 psi54%2543 fps95.8%
Norma MRP<<locked>>80%42,931 psi76%2808 fps99.5%
Ramshot Grand<<locked>>80%38,493 psi68%2717 fps96.9%
Ramshot Magnum<<locked>>80%34,418 psi61%2592 fps97.3%
ReloadSwiss RS 14<<locked>>80%28,892 psi51%1716 fps100%
ReloadSwiss RS 7659.9 gr80%32,256 psi57%2612 fps97.4%
ReloadSwiss RS 80<<locked>>88%39,349 psi70%2766 fps95.7%
Rottweil R 904<<locked>>80%45,484 psi80%2762 fps98.3%
Rottweil R 905<<locked>>80%44,034 psi78%2769 fps98.9%
SNPE Vectan Tubal 8000<<locked>>80%43,743 psi77%2766 fps98.9%
Somchem S361<<locked>>80%46,499 psi82%2756 fps97.9%
Somchem S385<<locked>>80%44,454 psi79%2746 fps99.4%
Vihtavuori N165<<locked>>80%38,754 psi69%2621 fps98.2%
Vihtavuori N555<<locked>>80%43,656 psi77%2756 fps100%
Vihtavuori N560<<locked>>80%42,757 psi76%2799 fps97.2%
Vihtavuori N565<<locked>>82%37,898 psi67%2674 fps95.9%
Vihtavuori N56864.2 gr88%40,698 psi72%2785 fps95.5%
Winchester StaBALL HD<<locked>>80%36,608 psi65%2726 fps100%
Winchester Supreme 780<<locked>>80%40,915 psi72%2677 fps98.2%

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.

<<locked>> you need an access license to unlock this data.

This overview compares 47 powders for 6.5 x 68 R loaded with the .264 | 139gr | Brenneke TOG. ADI AR 2218 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,041 fps. ADI AR 2218 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (390 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.264" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Hodgdon TrailBoss, IMR 8133 Enduron 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, Vihtavuori N568 rank at the top here: for 6.5 x 68 R with the .264 | 139gr | Brenneke TOG 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.

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