Has anyone seen this?
I had a customer in India ask me about this a couple of months ago. A company called Lottes Sport+Technik sells a device designed to measure the concentricity of the calyx of the pellet. For those of us with poor Words with Friends ratings, the "calyx" is the cup-like recess in the back of the pellet.
It does seem to me that if the punch which pushes the slug into the swage die is not well centered, the result is that the pellet might not have weight concentricity. This may well effect rotational inertia, and stability. Think of it as a top whose axis is off the spinner tip, it will wobble much more quickly and severely.
These two links are to German sites, and you may want to use a browser option to translate.
https://www.lottessporttechnik.de/produkte/joker/
http://www.rb-shooting.com/schiesssport/de/1979-lottes-sport-diabolo-joker.html
There is also a video here:
https://www.youtube.com/watch?v=VbhTbraaJCc
I had a customer in India ask me about this a couple of months ago. A company called Lottes Sport+Technik sells a device designed to measure the concentricity of the calyx of the pellet. For those of us with poor Words with Friends ratings, the "calyx" is the cup-like recess in the back of the pellet.
It does seem to me that if the punch which pushes the slug into the swage die is not well centered, the result is that the pellet might not have weight concentricity. This may well effect rotational inertia, and stability. Think of it as a top whose axis is off the spinner tip, it will wobble much more quickly and severely.
These two links are to German sites, and you may want to use a browser option to translate.
https://www.lottessporttechnik.de/produkte/joker/
http://www.rb-shooting.com/schiesssport/de/1979-lottes-sport-diabolo-joker.html
There is also a video here:
https://www.youtube.com/watch?v=VbhTbraaJCc