They said they don't recommend them because there's just so much risk that sooner or later, a live round is going to get in the gun instead of a snap cap.
There could be some substance to that but in fact - if anyone dry firing treats that gun as loaded anyways and follows rule #2 - then even if there was a discharge of a live round, no one gets hurt.
In essence - dry fire requires all the safety rules - just because no bang every time, still need to be scupulous on safety.
I favor snap caps, the ones with spring loaded ''primer'' - I reckon anything that cushions FP blow has to be helpful. Was a time when dry fire of a rimfire was bad because of peening the breech face - in fact I still think that tho Ruger seemingly does not forbid dry fire IIRC on MkII type guns.
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Near forgot - welcome along Martin :smile: