Keep watching the EE for used actions, or complete set ups. The 6.5 CM comes up often as it seems like there are many in use out there. Can always replace a barrel on one that is close to shot out for around $800.
Me, I like using prefit barrels, as you can take off and on easier without special tools or smiths. Most actions are prefit tolerances now, and you just have to match a prefit barrel. Even if you get a full barreled action, before purchase you can look up if it is prefit barrel capable.
The prefit barrels usually use a barrel nut of some sort, like the "savage" nut. This enables you ease of removal without a barrel vice and action wrench, which alone add $500-$600 or more to the project.
Simple go/no go gauges and you can be set up quickly to install your barrels at home. Once you get comfortable you can play with those tolerances as well, within reason.
Recently scored a rem 783 with a heavy 20" IBI barrel, full rifle in 223 for a decent savings. Thing shoots amazing. I already have a 6.5 CM, so this was just a logical step to get next. Plus its cheaper to reload for.