243 winchester to 260 remington question

Discussion in 'Gunsmithing' started by harleybug, May 26, 2015.

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  1. harleybug

    harleybug Well-Known Member

    Oct 30, 2014
    I found a very nice remington 700 that is chambered in 243 and i want a 260 or a 6.5 creedmoor. So my question is how hard is it to rechamber the gum. It already has a nice shilen barrel but i dont know the twist rate. How can i determin the twist rate and how much does it cost to rechamber a gun. Any advice is appreciated.
  2. Sully2

    Sully2 Well-Known Member

    Feb 28, 2011

    You need a new barrel. 243is just that....243 caliber. 260 is 264 caliber. Kinda tough to blow bullets of .264 down a tube with a hole the size of .243