Bolt size on Model 70?
 

Does anyone know if the bolt face for a 7mm Rem Mag and a .300 Win Mag are the same for a Winchester Model 70 CRF? I own neither nor do I have a rifle in either caliber, so I don’t even know how drastically different the diameter of the cases are. Thanks for being helpful and gracious with someone who has never looked into this particular question.

Maybe I have my answer
 

So, apparently the bottom rim is 13.51mm on both 7mm rem mag and .300 win mag? So, same bolt face? Is it the same bolt length, too, so basically the same long action bolt for both 7mm rem mag and .300 win mag in a Win Model 70 CRF? If anyone has both bolts and could check their interchangeability for me, that would be great. I also don’t know, just because I have never learned, if these bolts have adjustable lengths, or if headspace is established through machining the chamber. Forgive my ignorance, but I won’t learn unless I ask a question or two.

Same but headspace is not adjustable ,it has to be checked with gauges .:)
Cat

There is no barrel nut on a model 70, so headspace is adjusted by machining the chamber.

The bolts are the same. Headspace will likely be different.

Thank you for the assistance.

7MM rem mag, 300 win mag, .264 Win mag and .300 H&H ( and a few others) all have the same parent case so yes head dimensions are the same.