training value of IDPA for the defensive shooter?
I shoot both IPSC and IDPA fairly regularly and shoot PPC about once a year. IPSC and IDPA are best considered skill building exercises that have some training value and can be very entertaining. Any competitive event, of necessity, will not be able to duplicate the dynamics of a real gunfight.
But, depending upon the course of fire, there CAN be training value in the process, if you are shooting the IDPA classifier or an IPSC classifier that measures basic marksmanship and gun-handling skills. Some IPSC assault courses totally lack any connection to reality and are best avoided IMHO, but classifiers and many IDPA courses of fire are at least semi-realistic in the marksmanship skills that are required in that course of fire.
In such competitions I've most often always used whatever my duty gun was at the time. (Currently it's a Glock 22 in .40 cal.)
I'm more interested in getting trigger time than in shooting the matches as a competitive activity. Of course, I'm not particularly fast, so if I WAS attempting to become the next USPSA champion, I'd be way out of luck . . .
In general I prefer the course design philosophy of IDPA. However, I've been shooting IPSC on a sporadic basis at the local level since 1978, in IDPA since 2000, and I've been competing regularly again in USPSA and IDPA since 2005.
I particularly like the USPSA Classifiers and the IDPA Classifier match as methods to test basic skills. Also, several of the local IPSC clubs have LOTS more steel and movers and bobbers and so forth than what we have available at the police range, so the courses of fire they use on match days are much more innovative that what we can do during in-service training at the PD.
There was a similar thread on one of the other forums a few years ago, and one poster had an interesting thought that kind of mirrors my philosophy -- he takes IDPA more seriously and competes in IPSC as a sort of structured practice session.
You'll get out of it what you put into it. Be safe and have fun with it. At the very least, shooting in matches can show you which skills to need to practice more . . .
Many clubs are now on the web and some post the course descriptions for upcoming stages on their web site. If clubs near you do this, you'll find this to be very useful. I don't look at the courses of fire in advance to figure out a "game plan" on how to shoot the course, but rather to get an idea of what skills I might need to practice before the match. (practice strong hand only and weak hand only shooting to start with, and engaging multiple targets from behind high & low cover)
Also, some clubs are more practically oriented, and some have more members who shoot purely as a competitive activity (usually the IPSC shooters, BUT NOT ALWAYS) and by looking at posted courses of fire you can determine which orientation the club has and if the matches they run have any value for what you're trying to accomplish. (Sometimes I'll look at the posted courses for one of the local clubs and if three out of five stages are "run & gun" assault courses [which don't fit in with my philosophy very well] I'll just go do something else that day . . . )
Competitive shooting certainly has the potential to help you increase your marksmanship and gun handling skills, depending upon what kind of matches you're shooting. It can also certainly train you into bad habits, just as focusing too much on speed, jerking the trigger, and forgetting to look at the sights . . . you have to be mindful in everything you do if you want to maximize the skill building potential of that particular activity.
I think you still need to maintain your own practice regime to keep your skills well rounded. Shooting in a match will show you the skills you need to work on. That's one of the things I like best about shooting in matches. If I have trouble with something I know what to practice the next time I go out.
I think the thing I like best about the IDPA course design philosophy is the emphasis on engaging targets from behind cover. That's a worthwhile skill and engaging multiple targets from behind cover is a skill I need to better develop myself.
Whether or not shooting in matches will be of use developing defensive skills depends totally on the courses of fire. Some IDPA clubs stick strictly to the IDPA guidelines and some eventually drift off into semi-USPSA field courses because people want "run & gun" courses with a high round count and lots of movement. Hopefully your local clubs try to be more practical.
In any case, IDPA or USPSA competition can help you develop shooting related skills, and can be worthwhile that way. And if you choose, you can try to be tactically correct when shooting the matches. There is still training value to be gained, if you ignore the clock and focus instead on some of the tactical elements, like use of cover.
If you do a search, you'll find that this topic gets discussed frequently on this and other forums. Some of the observations that posters make are well reasoned and articulate. Others are not . . .