I've been using Jim's Big Game heads for 2 seasons now. I took 2 does last yr-died within sight from my stand-and 4 deer this yr. They leave some amazing blood trails. I use the left wing, single bevel heads on my 2018 Legacy arrows. They fly great for me. I think Jim recommends 2020, but I had quite a few of the 2018s around and the arrows fly well, so... I'm shooting a Centaur 53# bow also. The heads are sharp out of the package, but I have been trying to get them sharper. I think the angle of the blade has make the heads feel not as "sharp" as other heads that I have used. Jim's broadheads are definitely well made and will be on the ends of my arrows for a long time. Jim's bows aren't too bad, also. LOL! Peace!