Im in the process of testing some out right now. Ive only shot them for one day at 20 and 30 yards and only with field points, but so far they fly great. Im shooting Blazers and was very skeptical about the FOBs, but the guy at Starrflight sent me some to try and I have to say the fly as well as my Blazers at 30 yards. I still have to shoot them at longer distances and with b-heads but Im gonna give them an honest try and see if they fly broadheads as well as they claim. My only problem so far is hitting my anchor point, when I anchor my draw against my face, the FOB is against my cheek, and it seems like I have a little trouble getting my eye into my peep, the FOB holds the string 1/2 inch out from my normal anchor point, as soon as I got over that, they shot great for me. Im shooting two Blazer fletched arrows, and two arrows with the FOBs and they all group touching one another.