Very interesting, Jerry.
I once heard a story, (some say true, others swear false!) that long ago in a far away galaxy, someone came up with a basic idea for a replacement trigger blade sure to be a great success. It looked pretty good, but in fact, it just didn't work all that well in some guns and in others, it didn't work at all. Very often the trigger had to be re-worked and customized in order to even fit and function, so that a substantial number of replacement trigger installations turned into a labor intensive, custom trigger jobs. A young, upstart air gun tuner who had frequently worked with these triggers finally grew weary of such toil and trouble and said to himself: "self - I think I can do better" And he did. He made design changes and came up with a jewel of a trigger that fit more air rifles and that could be easily installed, by even those will little experience in working on air rifles. It seems no laws were broken or patents infringed upon. And it soon brought fame, if not fortune, to it's designer. But since it looked superficially very much like the earlier, but flawed trigger (except to those educated in the nuances of high quality trigger design) some cried "foul! -- a mere copy of someone else's work!" When one truly begins to understand the subtlety of shape and function of the critical surfaces of a well designed trigger, and what substantial differences in the function and feel of a trigger result from altered tolerances of a few thousandths here and an somewhat improved shape there (not unlike those described in the BAM vs the Rekord trigger blade in the blogs you reference, referenced blog), then one begins to have some insight and understanding about very successful and less successful trigger designs.
Very interesting reading, indeed.
