TTSX or TSX in 6.5 rem mag

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Blacktail, Oct 23, 2013.

  1. Blacktail

    Blacktail Well-Known Member

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    Have a 6.5 short action 23" shillen on a Ti action shoots 120 Speer sp to .310" at 3100 using fed210 59 RL22. Since I live in this POS state of ca looking for to try copper bullet. Any thought with short action obviously hindered in my ability to seat the bullet out get far. Haven't tried Speer on game so any thought on that be helpful as well. Thnx
     
  2. jfseaman

    jfseaman Well-Known Member

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    I too live in the SSRC (Soviet Socialist Republic of California).

    If it were me, I'd make sure of my twist rate. If 8 go with Barnes TTSX 120 #26430. If the twist rate is higher/slower 9 or more, I would go with the Barnes TTSX 100 #26428. There is plenty of power in a copper 100

    If it were me, I would not attempt copper 140s unless I had a 7.5 twist.

    My estimates:

    100 TTSX at 3300fps is over 1000flb at 400 yards.
    120 TTSX at 3100fbs is over 1000flb at 400 yards.

    The 100 TTSX will shoot a little flatter. Of course.
     
  3. TxPhred

    TxPhred Member

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    I agree with Seaman. I have a 6.5 Rem Mag in a Mohawk with a 18.5" barrel and I use the 100 gr TTSX bullets. They chronied at 3058 FPS over H380 and very accurate. I recently purchased the 120 gr TTSX and will try them but I am very happy with the 100's. Recoil was very good as well.

    Shoot 'em well, shoot 'em straight.
     
  4. AKGuide

    AKGuide Well-Known Member

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    The barnes bullets like jump so you should be okay seating to mag lengths. Also the harder you push them the tighter the groups normally, but not always. With the 23" barrel I would guess that you could get 3300 with the 100 grainers and 3100 with the 120 grainers. I'd use either H4831, H4350, or H414.

    Reuben
     
  5. Shootin4fun

    Shootin4fun Well-Known Member

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    With that kind of speed, you'll need to keep your shots to longer distances or else loose significant meat to bloodshot.

    I have shot a fair amount of TSX and they have performed very well out of my 270win. Now I'm trying TTSX because they're supposed to open up at a lower velocity, allowing for slightly longer shots (+ a better BC).

    Anyway, the 130gr TTSX is .100" longer (!) than the TSX and the ogive is a little different. I am using a bullet comparator to measure ogive and I also measure COAL. Now if I load the TTSX at the same ogive length, then it is .040" deeper in the case.

    My question is to all you reloading experts, does this require a lower powder charge in order to avoid excessive pressure problems because the case capacity is being decreased? I have loaded some .4gr lighter but haven't had a chance to test them yet.
     
  6. Shootin4fun

    Shootin4fun Well-Known Member

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    With that kind of speed, you'll need to keep your shots to longer distances or else loose significant meat to bloodshot.

    Maybe this next part should be in the reloading forum:

    I have shot a fair amount of TSX and they have performed very well out of my 270win. Some bloodshot will occur even at 2600fps but expansion is controlled and penetration...well do I really need to say it? Now I'm trying TTSX because they're supposed to open up at a lower velocity, allowing for slightly longer shots (+ a better BC).

    Anyway, the 130gr TTSX is .100" longer (!) than the TSX and the ogive is a little different. I am using a bullet comparator to measure ogive and I also measure COAL. Now, if I load the TTSX at the same ogive length so that the jump is basically the same, then it is about .040" deeper in the case and still .020" longer COAL.

    My question is, does this require a lower powder charge in order to avoid excessive pressure problems because the case capacity is being decreased? Will I get the same velocity with a slightly lower charge because of that?