Mainehunt, Is your P-17 a Winchester or Remington.....or do you have an Eddystone?

The things that have to be done to a P-17 to create a nice sporter is enormous and unless you can do most of the work yourself it's beastly expensive. If you have an Eddystone, I'd advise either trading it or possibly rebarreling it in the same case size as the .30-06.

If you have a Winchester or Remington, it can be converted to .375 H&H, .416 Rem Mag, even .458 Lott. However you could likely buy a new M-70 in any of these calibers for less than the cost of converting the Enfield.

I doubt seriously if I could get $500 for my enfield converted to .375 H&H.....Even though it's a beautiful rifle and shoots very well.

In any case if you do decide to go ahead with the conversion, I strongly recommend you get the foreward ring of the action Magnafluxed to check for cracks.