I admit, due to some ignorant younger years, I have some hearing loss and can ill afford to lose anymore, so I double up hearing protection on the range. Can't hear it then.
But the only thing close to this descripted "ping" I can hear is when I load a snap cap in and cycle the action when I am at home.
When the bolt locks in the forward position, there is a slight ringing like a tuning fork that can be heard.