I have observed .38 Special cases that had the channelier in the position to keep a bullet from being pushed too deeply in the case and some with the channelier so close to the case head that the channelier could not have been applied for the purpose of preventing bullet set-back. One would conclude that its purpose may have been cosmetic.
Sometimes you get what you pay for, sometimes you only pay more for what you get.
Three shots are not a "group"...they are a "few".
If the Bible is the literal, infallible, unerring word of God...where are all those witches I am supposed to kill? (Exodus 22:18)