You dont, and I dont recommend it, but lets face it, TONS do.
Heck, some even carry with it.
A swelled case in a wheelgun still gives one 4 or 5 more rounds before its worthless.
Maybe... Or maybe that swelled case pushes the primer or case head back tight against the recoil shield. If that happens your shooting experience stops immediately until you can knock the cylinder open and rap on the extraction rod hard enough to clear the cylinder. Sometimes that requires more than a palm strike and you need a rawhide mallet or something similar to get the situation sorted out. Better not bend the extraction rod or spring the crane while sorting the issue out. If you do the revolver is out of service until gunsmithing type attention fixes it. No fun! Wheel guns have troubles too and often a revolvers breakdown isn't as easily fixed as a tap, rack, bang drill for a semi auto. If a semi auto chokes tap, rack, bang or simply reloading the gun solves nearly all it's fixable malfunctions.
The new, inexperienced shooters that I referred to in my original post are not likely to be shooting any kind of ammo with swelled cases. They're a 50 year old woman purchasing her first gun and buying ammo at the counter at the local gun store, not shooting reloads. Those same people aren't likely to need a high-capacity Glock with lots of rounds. A revolver should suit them just fine.
I started this post talking about new and inexperienced gun owners and folks and immediately went to, "well, the Glock and similar guns are good enough for the military and police". Yep, yes they are. So are M16's and handcuffs.
