I had a 300 win mag that the extractor was broken on. I took it to Ryan Gun*censored*hing in winlock. its really not that far away from castle rock. he fixed my gun and was good priced i think. think he is only open from wed-sun though. here is the info. may want to check him out and see what he says.
Ryan Gunsmithing
1488 Ferrier Rd
Winlock, WA 98596
360-785-0880
Hope this helps you out.