Three or four deer ago, my wife shooting a cedar with left wing feathers and a right wing Grizzly with her 38 at her 26" draw, had a nice big doe that walked about five yards behind her while she was resting on a dead trunk. As the deer preceded down the trail it offered a good quartering shot. The deer jumped on the release and she hit in the right rump. It went down very quickly with a steady blood trail. Upon inspection, the head cut the rear hip bone and went forward lodging in the left scapula with the entire arrow inside the deer. That was a file sharpened original Grizzly.
I went to a left wing Jo-Jan because I was getting feather cuts on my index finger with my longbows and had a bunch of the old right wing Grizzlies left. Later, I went to single bevel left wing Hills, because I was worried about the effects of a left wing arrow fighting with a right wing in flight and then having the beveled side of the blade turning counter clockwise, when it wanted to spin clockwise after the hit. This was sometime in the 90s that I made the switch. My wife being frugal decided to use an old arrow first before breaking into her new batch. I shot a bunch of deer with right winged arrows with the right wing Grizzlies in the first years of the Grizzly heads. Perhaps, just maybe, I get a drop or two more blood on the ground with the left wing Hills on left wing arrows, maybe. I see no difference in the average blood trail length.