You asked for proof that they could last thousands of rounds and got proof from a person who has a solid track record for stating the facts. You then questioned how anyone could shoot that many rounds and not be a registered shooter. As the ATA and the NSSA are finding out the vast majority of shooters do not shoot registered and will never shoot them. Registered shooters are not on the increase and have been in decline for many years. Most shooters are not out for glory or rewards. It is a hobby for them and they like to shoot and meet fellow shooters.
Exactly. While I never shot a single round of registered trap, it was trap shooting that moved me from rifles to shotguns. For two years I kept the 500ct bags that the wads came in. At the end when I got bored with trap I had shot just over 21,000 rounds.
I didn't use an NID but I would have gladly done so if I owned one at the time.