Well Stan, Yes there are things I believe in which I cannot explain. Gravity as you mentioned, but if I hold an item out at arm's length & turn it loose & it goes up instead of down & can explain WHY. I have as yet not been shown irrefutable proof that 3/4 oz shot actually shoots better from a .550" bore than any other size, much less as to WHY.
I was not actually accusing anyone of using the term Magic, other than myself. The statement has been repeated so many times by so many different writers that 3/4 oz of shot just somehow shoots better than it has any right to, that I call that "Magic". I still warn all who will listen "Don't Rely on Magic". The 28 is a great little gun, but it won't do a thing ballistics wise that can't be done as well or better with a 20. Even a 16 or 12 will shoot 3/4 oz far better than people "Think" should be capable of being done with a mere 3/4 oz of shot. There is nothing magic or unusual about that either, so many think that if you double the shot charge you should double its effective range, but that is far from the truth. It is just hard to get people to accept that 3/4 oz of shot is as effective, even more so, at 23 yds as a 1˝ oz "Baby Magnum" is at 50. When it proves to be true, then they start screaming there is something special to that .550" bore that cannot be explained. Fact is there is nothing special about the hole size & its effectiveness can be (& has been) explained.