Depends what state you're in. I think some states require serials on all homemade guns. In those states, private ranges are probably going to check. But t even then, they probably aren't cross-referencing to see if it's yours.

My state doesn't require serials unless you go to transfer ownership.

Like the other poster said, go to state gamelands if possible. The ranger sometimes stops by to see if you paid for your hunting/range license, but that's about it.