I think it's a sleeper, and he got bull that he can enter in either book. I'm going to say 375-380" net, with minimal deductions. He's got the top 1/2 of a 340 bull, and the bottom 1/2 of a 400.
Without all the pics I'd have guessed lower - there's a whole bunch of curvature going on in the tines and beams, that get's flattened in 2D and and makes the length measurements look shorter.
Like Bone said - what archer could possibly give a rat's butt what that beast scores. Trophy of as lifetime!