I jsut got some montecs the other day ( so i can sharpen them) i have noticed a whistleing sound. Any body else notice this not worried about the hunt my hoyt will get em there fast enough it wont matter

I hear voices in my head....never whistling though.

Yes, I just had a post the same as yours only a few days ago.. Not sure where it is now but some people have heard it and most don't think it will affect anything.. Mine also make the sound but I also have some Stingers and they are a little more quiet.
G%'s typical response is the "old ones" did and the new ones don't, if you hear a whistle sound then it's the fletchings... Whatever... That's why it only does it with that broadhead and no others..

Great broadheads minus the slightly louder flight noise...

yea my old muzzys didnt make noise doesnt sound like good customer service

Guys how fast our your bow?

Montecs definetly have a whistling problem with faster bows. I had the same problem a year ago, and at least five other people said they had the same problem.I haven't had a deer jump my arrow so i still use them. They'llget the job done.

shootin around 275

I have the same issues... My Switchback XT sends those 100grat approx. 275 and I also get a whistle. Ive heard the older style without the chamfer on the inside of the blades caused this, but I have the newer ones and they still whistle?? Go figure?? This is having me double think mechanicals.

I've got 3 G5's still new in the pkg.......2 left over from last yr.......and 2 practice heads.

$25 and I'll send 'em to you.

Jeff

Sent you a pm. If they are 100's I will take the offer.