Reliable? Get 1000 rounds and a service grade revolver. I bet a Glock 17, ANY Glock 1-3 gen, goes 100 percent but I won't bet a duty revolver like a M10 or M19 smith will.
While the Glock is very reliable, it it still ammunition dependent when it comes to functioning, where a revolver is not. We get many more threads and posts on The High Road concerning pistol functioning issues then we do concerning wheel guns.
That said, 1000 rounds is less then 100 per month during a full year. Neither quality revolvers nor pistols have any problem doing that.
Isn't Glock supposed to be up to Gen-4?