DIY - I got a pack of these just for s**ts and giggles to try them. I took one out of the packet and shot it at 20, 30 and 40 yards and quite honestly it flew as good as my slick tricks. It was right on the money.
When I came back into the man cave I got to looking at it and grabbed a spare insert from my accessory box and put the BH on it and put the insert in the vise. Using a small 1/2 round file I was able to put a very sharp edge on the blades. So the one-&-done suggestion I don't think is worthy here.
I believe that these BHs would cause a considerable amount of damage and leave a good blood trail judging by the chunks of material I pulled out with it from my BH target. Penetration was not that much less than a slick trick magnum.