Pentax 645 and 200 mm. FA Lens

This is a 100% crop from an ISO 800, f7.1, 1/250 sec. handheld shot, making a 20X27 inch print at 300 dpi. My thinking is that if 100% looks this good.... Testing at the corners is yet to be done though in casual images, there might be some forward focus but just as sharp.