I am ordering a new bolt from PTG for an old Rem model 721. I am looking for advice/opinions on whether to order a Rem or Sako extractor and why. I am not a smith of any level, and want to order the bolt with the extractor installed. <span style="color: #33CC00"> Well my bolt came in, and it did in fact fit into my rifle. I chambered a snap cap and several different brands of btass--I don't have a no go gauge, but I feel pretty comfortable about firing it. One question I have though is this: The bolt is a one piece and has a thread on bolt knob. I am curious as to what you all would recommend to anchor the knob it place, I turned on as hard as I could with my bare hand and it broke lose pretty easily-- I'm thinking I should do something to make it more solid in place... </span>