I purchased a model print from Angus of Makers Muse to determine the print-in-place capability of my printer. I can print models with 0.4 gaps and expect the parts to move, but at 0.3 mm, they are stuck together. That's print-in-place, but separate print clearance is different due to "elephant's foot."

For your application, you don't have to have precise, tight fit and a small bit of play won't hurt the assembly. If you sand or otherwise cut away the elephant's foot, you could probably build a model with 0.5 mm clearance and have minimal problems, unless your printer is out-of-tune.

Consider also to create a block test of only the portions of the joint that are in contact. You need only to print it about 4-6 mm high for a good test piece. Short duration print, minimal filament use and you'll be able to check easily if it's safe to make the full print.