I had 2 good dogs for deer years ago, the first was a 1/4 bull 3/4 grey called minty, heart of a lion, there weren't many he would miss, but he wouldn't pressure them in the middle of a field, but always catch them close to the hedge/fence! The next was a 30 inch 1/4 deer 3/4 grey called ghengis, he was a flyer on open land, & catch them on the run before they turned, but if they turned, & he missed, he'd over run, not the best turner, but when he caught em, it was text book stuff!