2 dolla: dawei may have made a typo, and may mean 100-150 rounds per session. That's about what I do with my Airweight Bodyguard or my Airweight M37 and I have a bunch of fun with them. Try one in each hand - hoooo boy... If you have a range that will allow you to skip cans, or hang used cans from the shooting frame you can really improve your close in shooting skills and have a heck of a time doing it.
But, for the 100 yard shots, and there are a whole bunch of guys who shoot snubbies, mostly 38 snubbies, at silly-wets and the like, you can have an incredible amount of fun dongin' the gong at 100 yds.
I don't know how the handgun silhouette games are shot today but when I enjoyed that sport there were two different set-ups: one for big bore magnum type and single shots from 50 - 200 yds and then one for small bore and non-magnums from 25-100 yds. I never laughed at the notion of a 38 snubnose because I remember back in the 60s, when you could buy cases of ammo for next to nothing, we used to buy up a case of the old 200 gn Winchester loads and watch them go downrange from our snubbies on a snow covered range. You could actually call your shots, but the interesting thing was not that you could actually watch the bullet travel downrange, but the authority with which it hit. It was a blast. So, when some older guys (older than I was at the time) showed up for the silhouette shoots with their old snubnosed 38s and a couple of boxes of heavy shells you knew these guys could shoot. We used to go a nickle a target at the 50, 75 and 100 yd ranges - the 25 yd chickens were no problem.
Yes, these slugs have the trajectory of a football and sometimes you have to take a full front sight but when you go prone and dong that gong 5 out of 5 or 6 out of 6 times you win enough nickles for a hot dog and a cup of coffee. Used to work well for us on a cold winter range and even though it might be so cold that your hands would need to warm up before you could shoot, it was always fun. Mikey.