I would like to compete, but not sure when the time will be right for me.
The right time for you to compete is at the very next match in your area. Don't worry about whether you have the right gear, or are a good enough shooter, or any of that stuff. Just go. I promise you'll have a good time.
I have no idea what sort of competition I would be considering specifically.
Well, if you're wanting an Open-class race gun, that pretty much says either IPSC or Steel Challenge. Race guns aren't allowed in IDPA, and would be impractical for other games like Bullseye.
I had always thought about doing the fast steel silohuette shooting. But maybe that would be tough for me at first.
If you're talking about Steel Challenge, that's about the best form of action/practical kind of competition you can pick to start with. Local matches, at least around here, are about the most laid-back match I've attended. The rules are very simple, the stages aren't hard to run, and it's an absolute blast. Also, the rules governing what kind of gun you can shoot are very open and include everything from rimfire to IDPA to IPSC to Cowboy guns. If you've got a gun and a few magazines, you've got the gear to compete.
It sounds as though I need to get the Glock in 9x19, which is considered a "major"?
*warning: boring stuff about IPSC rules to follow. You can skip this if you want.*
Ok, in IPSC, they break calibers down along the lines of what they call Major and Minor. Basically, it's an equation that takes into account bullet diameter, weight, and velocity to arrive at a number called a power factor. Guns that make Major power factor receive more favorable scoring than those in minor. Standard 9mm loads don't have the numbers to make major, so you have to shoot more accurately than the guys shooting major. In the last few years, some guys have begun loading 9mm ammunition with a greater overall length than reloading manuals specify. By doing so, they can get extra case capacity for more powder, which allows them to make major classification with a 9mm. However, in order shoot these rounds, you have to have a custom-made barrel.
But that's really all kind of superfluous. If you've never shot a match before, don't worry about that stuff. Grab your gear, go to a match, and run what ya brung.
I've never heard of these major and minor terms used before. Is there a specific Glock model I should be looking at?
I know a guy who shoots an Open Glock, but couldn't tell you what caliber it's in offhand. Most likely either 9mm or .40SW