A long time ago in a land far, far away, well not so far but still a long time ago, I lusted for an S@W K-22, which at that time ( 1970's ) was a rare item to find. I settled for a Colt " Diamond Back" which I shot until it started spitting lead and as it didn't impress me, accuracy wise, I sold it. Finally one LGS got a couple in and one was mine, and still is, and after a few more I got a 610 with a 6" bbl then one in 4". A long story short the only one left was the original K-22 until recently a 4", 10 shot 617 showed up at lgs and ended up mine. My guess is that they are very addictive but I'm enjoying the addiction. Enjoy yours and as for dry firing, I picked up a 50 ct. package of small tan plastic wall anchors at Walmart ( dont remember the number) and they work great as snap caps, and they only cost $2 for fifty. Again, enjoy the 617 its a great gun.........Dan