The ipsc/uspsa podcaster Steve Anderson explains this concept very well. He uses the terms ‘Speed mode’ for dry fire practices and ‘Match mode’ for matches. And advises that if you try and ‘ go fast ’ in a match, you will almost always crash and burn and can only go as fast as your front sight will allow.
Steve has another great line:
"Don't bring practice guy to the match."
For those that don't know, or are a little hazy on the whole "hit factor" thing, it's really just "points per second". Total points divided by the time it took to get them, is your average points per second for that stage.
Slow, careful, shooters are getting a ton of points, but taking a lot of time to get them. Example: a fast shooter can get 3/4 the amount of points, but in half the time, so their points per second rate is much higher.
Slow dude: 20 seconds for 20 Alphas. 100 points / 20 sec = a hit factor of 5.0 (5 points per second average)
Fast dude: 10 seconds for 10 Alphas and 10 Charlies. 80 points / 10 seconds = a hit factor of 8.0 (8 points per second average)
As mentioned above, it's a balance. Crank up the speed too much and you're getting D/M/NS, and your points total will suck. Divide low points by a fast time, and your points per second will suck as well. High points divided by a long time, will have an equally sucky average. Find the balance.
People will always have different philosophies about training, and no one method will be perfect for everyone, so I come at this from another angle. I will push for speed, but if I start collecting D/M/NS, that's no good. I don't want those, even in practice. For me, I find it hard to shift gears from "practice guy" to "match guy", so I try to keep those two methods fairly close. In practice I will accept a lower percent of A hits, so if I revert to "practice guy" in the match, I won't get burned.
Simple example: a drill requiring 8 shots will be fine with 3A/5C, but I don't want Ds. I'll watch my patterns on the target and refocus on grip and sight picture to crank up the speed and try to keep those groups tighter at the higher speed.
Again, it's a balance. If you don't push, you won't grow. Push too much and train with sloppy hits, and you may very well bring those to the match. Under pressure, many people revert to their training, (in Steve speak: "bring practice guy to the match")..... so for those people, how are they training?
I love the challenge!