Magnum 5.9 piston crown thickness

What was the clearance with that cut? If it was enough, it might be ok. But I wouldn't cut those crowns very deep at all. They aren't too thick to begin with. That's a failure you don't want, Beavis.
I didn’t measure anything for that cut. It was a test to see if I could effectively fly cut the piston. It’s a spare piston.