IMHO. I have been smithing for 29 years now and I have seen and replaced many 700/721 series extractors that were messed up and either would not extract or leave the empty sitting on top of the loaded rounds in the magazine. Two this year alone. One was on the Fountain PD's left hand sniper rifle and the other had to go back to Remington as it was a brand new 375 H&H that had a problem from the get go. I keep all types or Remington extractors in stock because they get used both snap in and rivet type. They are a very much used part as all parts suppliers have them in stock. i.e. Brownells and Midway. In my experience, Mule Deer you have had good luck in spite of the Remington extractors rather then because of them. I choose to tell of my experience and don' want to engage in a Urinary Olympics with anybody here on the Fire.