bocephus, here is a cheap easy oven that'll work great for ceracoating barreled actions.
Buy a piece of 8" double walled vent pipe. Next, buy some pipe insulation, a BBQ grill thermostate, an "eye" bolt and a paint can lid. All these items you can buy at Lowes.
Next you need a hotplate and you're in business.
It'll look like this and it'll work great.
The bottom of the 48" vent pipe sits open on top of a hot plate. The thermostate on top tells the tempreture and is adjusted by the heat setting on the hotplate.
Top, paint can lid with thermostat and eye bolt installed.
inside, action is hung from eye bolt and hangs in the heated tube.
Terry