I also had a Martini sporter rebored by JES.
worn out 303 to 35 on the 303 case. Perfect job. He only needed the bbl.
Job completed in 2 1/2 weeks.
$225 to $250 depending on # rifling grooves.
Included opening the neck on existing chamber, throating & return shipping of bbl.


I too got tired of waiting & never hearing from Clearwater.

Call Jessie @ JES Reboring. Let it ring. He'll pick up, or the answering machine will. Leave a message for call back and he WILL call you back.
http://www.35caliber.com/index.html

He'll let you know what options are available with the existing bbl dimentions you have.