Snap Caps

[idiot101]

Thoughts on Trader Keith snap caps for use on double rifles?
I have a newer 89B and a 20 year old Chapuis. I love the idea of practicing firing, ejecting, and reloading but the last thing I want to do is harm the firing pins. So from prior posts it sounds like it is a no-no for Chapuis. What about Trader Keith snap caps in a newer Heym?

you can drill out the primers/snap caps so that they can rebound, and still practice dry firing

 

[idiot101]

unasked for update:
I was at the range with Rigby's last week with Jerome who designed and built their Shakiri double rifle, using his own Shakiri, the prototype he designed and built... He was of the opinion that you should always use snapcaps regardless of what Chapuis says

Unasked for context:
My double rifle is back at Chapuis for a factory inpection and repair having broken two firing pins this year dry firing on empty chambers. They say they replace a total of two pins a year across all their customers and all their lines, hence the inspection and warrenty repair.