I've owned two hammer guns for over two decades and have never fired either.
One I bought because of rarity, a Quality 2, from the short-lived Parry Arms Co., Ithaca, NY. Just had to have Parry's rear-acting under-bolt --
46 02 Parry Arms Co..jpg
The other an Ithaca NIG with just too much condition to leave on mumblin' Gary's table at Syracuse --
196095 Ithaca NIG Left.jpg