OP, it seems strange (to me anyway) that you would be looking for a magazine for a Christmas present . . . did you mean you need a .30/06 or a .270 magazine for a PH 1200 or are you looking for a PH 1200 rifle in .30/06 or .270 magnum? The confusion is that there was no commercial .270 magnum other than the Weatherby which was not offered by ParkerHale.
If you are in search of a magazine, it supports my notion that a hinged floorplate, which the PH 1200 originally came with, can't be lost.