Whatever sighting plan used, you can't get around the fact that you need a lot of holdover to hit anything at that range. Sure the round will go that far, otherwise knowing the background behind your target wouldn't be so important.
And the title of the thread is "Glocks at 500yds?". Not Smiths, not Rugers, not Sigs. Glocks. If you are going to associate the name of any handgun manufacturer with a trick shot right up front like that then of course some will interpret it as extolling the virtures of that make above all others.
At least you posted pictures. Looks like fun. Makes those of us stuck shooting on an indoor range very jealous.
"Me fail English? That's un-possible!" --Ralph Wiggum
"A woman drove me to drink and I didn't even have the decency to thank her"-- W.C Fields