Yes. I use Chroma 2" mounted filters with a 6200MM and here's what a flat frame look like. The extreme corners do get corrected. Ensure that the scope also support the image circle of full-frame.
The 6200 is a full frame sensor, and has a 44mm imagecircle. So the inner diameter of the filter needs to be bigger than that. A mounted 2" filter with most likely M48 threads is cutting it really close there and you might see vignetting, so you probably want to go with the 50mm round filters.
Appreciate the feed back and time for the image of the flat. Some set up there Brian; amazing gear. I will look at the 50mm unmounted. Chroma though will have to take a back seat though.. Thank you for your time.