I had tried the reds in my stainless a few months ago. First sabot would load ok, next would be very tough to get down barrel, even shooting bh209. After polishing the bore, a PT Gold 300 in a red sabot seems to load much easier than I remember. Maybe I'll order 50 and ask harvester to send me some samples of the smooth sabots in case the red crush rib are again difficult after the first shot.