243 winchester to 260 remington question

[harleybug]

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.

 

[Sully2]

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.

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