I sure would have lost a bet on that one. I was sure a 327NG was factory cut for moon clips.
On a 38/357 Moon Clip Gun you need to pay attention to your brass. The under cut at the rim is not standardized on 38 Special. This undercut is what the moon clip snaps into. Most 38 moon clip guns will not work with Winchester or Starline Brass. They do like Remington and some other brands just fine however.
Next the 38 Moon Clips are .025 thick, or should I say thin. You need to be a little more careful with them than say 45 acp or 10mm moon clips. Probably a good plan to use a moon clip loading tool to load the clips.
My Night Guard is cut for moon clips, and they work very well in it. Mine is the discontinued 310NG in 40 S&W and 10mm. A very nice carry gun, and like my 610, it shoots 40 S&W just fine. I am really surprised that the 310NG was not a big seller because it will shoot 40 S&W which is plentiful, and has a great selection of carry ammo available for it. Did I mention I have buckets of 40 S&W range brass to reload for it with.
Enjoy your 327, it should be a great carry gun.
Bob