I used to shoot Muzzy's for a few years but actually didnt think much of them for just that reason but it was probably just coincidence more than anything. A good hit is a good hit IMO but I honestly had real terrible luck getting good blood trails while shooting the Muzzy's. I switched back to Thunderheads and as luck would have it Im getting great blood. Like I said its probably more coincidence more than anything but Im all about getting in a stand with confidence.