I shot holes in two shooting Chronys and two Pro Chronos first time out of the box.
Then I decided I can't be trusted with a handgun over a chronograph..... until I can hit the target every time.
I have not shot a hole in chronograph in 15 years.


But those short term relationships with shooting chrony taught me they are hard to trigger.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps