Played hockey in my younger years. Teeth with silver filling were knocked out years ago.Most of us older folks have silver colored fillings, and yes, they contain toxic heavy metals.
I got mine as a young teen, and since I have only made it to my my upper 60's, I am waiting to see if it has poisoned me...
Shooting heavy loads has made me a better shooter. You learn to hang on to your sight picture and follow through.
But that's just me, I am a recoil junkie....