Have you checked your local yellow pages? My advice would be to call around to a few, and see what kind of "vibe" you get from talking to them. Then pay a few of them a visit to check out their work/workspaces.
This does not sound like a mechanical problem.
1. Is the chamber clean?
2. Are the locking lugs inside the action clean and lubricated?
3. Is the bolt cam surface lubed?
4. Are you properly sizing your brass?