Hi there, working on my Remington 700 in 300 RUM, has some decent mods and is shooting well but I had a Wyatts extended mag box kit installed (machined the rear to fit the extended box) and there has been some challenges with sometimes a little stove piping of the rounds. If the action is cycled quickly, usually no issue but on a slower cycle the top round( when 2 are in the magazine) sometimes ejects a bit too quickly. Another gent on here suggested playing with the feed rails on the mag box, and it is making progress. Anyways I just noticed the follower says "PRC" ??? Is the follower the same for a 300 RUM? or did the local guy ship the incorrect follower?