erickm, I'm not that good of a shot yet, about the best I can group right now at 500 yards is in the 3-5 inch area so that doesn't give me a good probability of a first round hit even if I'm perfectly zero'd for the shot.
There are a few people out there though that I think can do it, some of those people being on this forum and others being from another forum.
All my shooting revolves around squirrel sized targets and hitting minute of squirrel, I haven't bothered worrying about minute of egg yet. I'd definitely want optics though for something like this.
I'd also choose a cartridge that hopefully pushed enough wind or disturbed the air enough so that if I missed by just a fraction of an inch the egg would still possibly splatter.
I might send this link to a few people I know who are pretty decent shots, some of them might be in the area and be interested or atleast they'd like to read more.