Both cases are made off the 404 Jeffrey case with the WSM having the larger case capacity so rechambering the barrel is all that's needed I believe to go from the 300 SAUM case to the 300 WSM case.

That should come in well below a half $k unless he's including the cost of the reamer and some other goodies.

Edit:I haven't done it though.

Last edited by George_De_Vries_3rd; 01/08/17.