6.5 TCU velocity in a carbine barrel

[AlanF]

What velocity should I expect from 6.5 TCU in a 22-23" barrel with 100gr and 120gr bullets? Also, will a 22-23" barrel realize the full velocity potential of the 6.5 TCU? Hoping for a potent varmint and deer round out to 150 yards or so. Now I have to decide if I want a tapered barrel or a bull barrel. Thanks.

Alan

[Hopalong7]

    I can't tell you about the 6.5, but I shoot both 14" and 18" 6mm TCU and there's about 200+/- fps difference.  I would think that length barrel would put the 6.5TCU close to 6.5JDJ pistol velocities and I can tell you that it works very good on deer to 150 yd. and further.
GOOD SHOOTIN', Walt 

[Dezynco]

Can't find any "rifle" data for the 6.5 TCU, but based on the tables I have, then guestimating for the extra barrel length, you should get 2200 - 2500 for the 120 grain and 100 grain - respectively.

Should be a potent little cartridge out to 200 yards.  Very efficient!  You might consider purchasing a chronograph if you just dieing to know, they're pretty cheap at about $80.00 or so.  If you do, report back to us and let us know how it turns out.

[Lone Star]

Sierra lists 2300 fps for the 100 and 2100 fps for the 120 in 14" barrels.  Adding another 10" should give an additional 250-300 fps for each bullet, based upon .223 velocity differences in long and short barrels.  Like others said, equivalent to a 6.5 JDJ - not faint praise....



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[3leggedturtle]

Handgun hunting mag.com  has an article on the 6.5 in a 21" barrel.  Cant remembee the exact URL but it was real interesting, but it had really long throat even 140gr bullets wouldnt reach rifling, dont remember the velocities.