Rechambering from 260 Rem to 6.5-06

Discussion in 'Gunsmithing' started by Red 1, Oct 17, 2013.

  1. Red 1

    Red 1 Well-Known Member

    Messages:
    89
    Joined:
    Feb 10, 2012
    I have a shilen pre-fit in 260 rem that I got from another person here that is new never fired. I was thinking about rechambering to 6.5-06 It seems pretty strait forward to me but would like some Input as I'm not a gunsmith and have'nt any experiance with such things.
     
  2. Edd

    Edd Well-Known Member

    Messages:
    2,394
    Joined:
    Jan 26, 2011
    It won't work. A 260 case has less taper than an 06 case. You would have to cut off the existing chamber and make a new one.
     

  3. sinarms

    sinarms Well-Known Member

    Messages:
    322
    Joined:
    Oct 24, 2010
    That right there would tell me don't do it. Secondly you should always compare reamer prints between the 2 to see if you need to set back to clean it up. You probably should go with a 6.5x284 if you want it cleaned up or a 6.5-06AI.
     
  4. Red 1

    Red 1 Well-Known Member

    Messages:
    89
    Joined:
    Feb 10, 2012
    Thanks guys I will check out the reamer profiles thanks a bunch.
     
  5. Trickymissfit

    Trickymissfit Well-Known Member

    Messages:
    4,072
    Joined:
    Jun 11, 2010
    The others are right, as the "06" will not clean up. Of course you could go with the Ackley. You might also think about the 6.5x55AI or the 6.5x57AI. They'll clean up. The 6.5x57AI will do about 2950 fps with a 140 grain bullet. Cases are nothing but .257AI necked up to 6.5. There are a few guys using it for long range target shooting right now, and it works very well. The one advantage of these two rounds is when shooting very long bullets you have plenty of room in the mag well. Another beauty to look at is the .270WSM necked down to 6.5mm. Your looking at about 3150 fps in a short action with a 140 grain bullet. This one is easy, and there's almost no fire forming issues. Of course you could do the samething with the Remington 7mm SAUM. Neither one will show much case shrinkage on fire forming, and both look to be winners. Although the 6.5WSM is a little more common.
    gary
     
  6. J E Custom

    J E Custom Well-Known Member

    Messages:
    7,307
    Joined:
    Jul 29, 2004
    Re: Re chambering from 260 Rem to 6.5-06

    Am I reading this post wrong ?

    It looks like he wants to take a 260 and re-chamber it to a 6.5x06 . If so, It will work with little or no tenon loss with a 6.5
    06 AI.

    J E CUSTOM
     
  7. Red 1

    Red 1 Well-Known Member

    Messages:
    89
    Joined:
    Feb 10, 2012
    J E that is correct I want to take my barrle from a 260 to the 6.5-06 but as of right now I might go with the 260 AI as I have brass for the 260 already. I have another ? I have seen the you tube videos of people doing the rechamber there selves Is it really that easy becouse this is something I'm enterested in trying.

    Thanks for all the help guys.
     
  8. Trickymissfit

    Trickymissfit Well-Known Member

    Messages:
    4,072
    Joined:
    Jun 11, 2010
    Re: Re chambering from 260 Rem to 6.5-06


    reread my post a couple times
    gary
     
  9. J E Custom

    J E Custom Well-Known Member

    Messages:
    7,307
    Joined:
    Jul 29, 2004
    It is not that easy unless you have the right tools and experience. Everyone had to start with the
    first one and I would recommend starting on a used or worn out barrel first (Practice) then if you
    are satisfied with the results then try a good barrel.

    What looks simple, In fact is difficult and could be dangerous. It is best to have a gunsmith coach
    you through the first one, grade your work and point out certain things that are critical.

    Thanks Gary. I missed your post the first time .

    J E CUSTOM
     
  10. Red 1

    Red 1 Well-Known Member

    Messages:
    89
    Joined:
    Feb 10, 2012
    Thanks will do
     
  11. Trickymissfit

    Trickymissfit Well-Known Member

    Messages:
    4,072
    Joined:
    Jun 11, 2010
    now I'm big on the 6.5-06 as I've often said in my posts, but not so big on the 6.5-06AI. But if you have a 6.5-06 Ackley improved, you can do just about any chamber from the .260 improved (Ackley never did anything with the 260 as it didn't exist). The taper per inch is the same, and they all come out of the 57mm Mauser family in one form or another. Some are stretched and others are simply shortened. You simply ream to the proper headspace.

    The nice thing about doing a .260 improved is that when you out grow it, you can rechamber it with the same reamer. I gave as many options as I could readily think of.

    * the 6.5x55AI is an over achiever, and will get you very close to 3000fps with a 140 grain bullet. Have never met a 6.5x55 shooter that wasn't in love with the round

    * the 6.5x57AI is basically similar to the .257AI, and once again an once again an achiever. It will comfortably shoot 140's at 3000fps. Plus cases for these are easy to do.

    * the 6.5-06 is also a great round, but really is less than 100fps faster than the above two rounds on it's best day. That's not great for a case that's almost a quarter inch longer, and tells us that we've about reached the max the .264 bore can handle.

    * the 6.5WSM case is another one of those over achievers. It should come in as an overbore cartridge, but doesn't act that way. 3200+fps is the norm with a 140 grain bullet. This one fire forms very well with very little case shrinkage. A heavy load of Magpro should make this round a killer (probably close to 3300fps with the 140 grain bullet).

    The oft mentioned .260AI will gain about 100fps at best, unless your into 70K psi loads. The generic .260 case is already considered to be an "improved" design from the start. (right from P.O. Ackley himself referring to the .308 case design)

    Think before you cut metal, as you can't put it back
    gary
     
    Last edited: Oct 21, 2013
  12. sinarms

    sinarms Well-Known Member

    Messages:
    322
    Joined:
    Oct 24, 2010
    I like the 260ai just for keeping the brass from walking and lasting longer. As JE said it is difficult to do unless you have the equipment and knowledge. A rechamber runs $80 so it is usually not worth it for someone to perform this task if they need to purchase the tools.
     
  13. Red 1

    Red 1 Well-Known Member

    Messages:
    89
    Joined:
    Feb 10, 2012
    Thanks Tricky very good info and advice. I will take this info and mull it around abit.
     
  14. Trickymissfit

    Trickymissfit Well-Known Member

    Messages:
    4,072
    Joined:
    Jun 11, 2010
    I'm an efficiency nut, and would rather have a gun shoot tight groups, than one shoot 4000fps. Then I factor in barrel life, and loading ease. I like the long necked cases as many know by now.

    It's common knowledge that overbore case are a little bit finicky about reloading. But it still can be done well. I personally think the 6.5-06 is about it for a 26 caliber bore. But on the otherhand the 6.5WSM just baffles me. With a heavy dose of Magpro (the powder that was designed for the WSM case) it will do an honest 3275fps, and maybe a tad more. The 264 mag velocity! Still I would take the 6.5x57AI (off the .257 case). It'll do an easy 2950 fps with a 140 grain bullet, and groups very well. So well that a lot of 1000 yard shooters have moved into it. I'm kind of a tightwad, and dies can be a serious issue. Forster sells the .257AI die as a standard caliber. You run the chamber reamer in the seater sleeve, and hone the I.D. of the sizer out about .010". Or order a bushing die. Not rocket science there!
    gary