Thanks for the replies, guys.
If I could buy a 10mm conversion barrel for my G24, I would in a heartbeat.
I did some Google searching and found lots of discussion about scopes on revolvers. It seems that many people are going with fixed 2x scopes, but the issue is that the objective diameter is only 20mm. I'm pretty sure I'll want larger - at least 32mm. Which means I may be going with a fixed 4 or a 2-7 even though 2x is probably enough for what I'm doing.
The part that I don't understand is the distance between eye and scope. When I hold my shotgun or rifle in shooting stance, my eye is roughly 4" from the scope. When I hold my pistol in shooting stance, that distance is around 22-24". I just don't understand how seeing through the scope is supposed to work at that distance.