I just got mine from Gary at Big horn supplies very quick turn around and very helpfull. Havnt used it yet waiting for my 260 barrel from Mysticprecision. Comparing it to the stock savage bolt head they visibly look a lot nicer they are also recieved very good reviews on 6mmbr. I did however run into a problem trying to install the ejector last night bought a replacment savage bolt parts (the PTG bolts come complety stripped) I believe the problem was the spring not the bolt head was actually planning on starting a thread on here about it. Spring appeared to be to long was not to worried ran into the same problem with a new ejector spring in my M305 bolt. Started slowly triming coils to get it to fit issue was by the time that I got it trimmed enough that the ejector could just be compressed enough to be slightly below the face of the bolt it placed very little pressure on the ejector can remove the pin and the spring barely has enough tension to push the ejector out of the bolt. Going to take apart my current bolt and try the spring from it.