Screw In Broadhead

[pktm]

I use aluminum arrows for most of my shooting, I have a question regarding the screw on broadheads I see from Magnus and Wensel. Are they spin tested. I know they are glued on to an adapter. How precise are they. A while back I got some and they were not really straight at all.

[Schultzy]

I'm not sure If there spin tested or not but It don't take much to fix the problem If there not centered right on the adapter. I'd say 70% of my Snuffers usually spin fairly well without me having to do anything to them.