Info request please. Picked up a New Haven (by Mossberg patterned after their 500) 600ET .410 for my wife to use in home defense. She's a bit of a light weight when it comes to recoil and this is the best option. I had planned to cut the 26" barrel down to 18.5, but really hate to destroy the barrel on it. Does anyone know if the Mossberg 500 HS410 barrel will fit the 600 ET? Other Mossberg options? Thanks in advance.