Even if you are not having trouble with your short irons, this is something to pay attention to for some improvement.
When I play with all levels of golfers, I log a rough statistical database of successes and failures for my own improvement and improvement of others.
I have found that about 75% of all amateurs hit their short irons too hard. I can’t tell you how many times on a 180 yard par 3 I will be hitting 7 iron and a playing partner will be hitting 4 or 5. Then on a 150 yard par 3 I will be hitting 9-iron and the same playing partner will also be hitting a 9. Then on a 125 yard par three I will be hitting pitching wedge and my cohort will have a gap, or even sand wedge.
The reason for this…most amateurs have gotten locked in on this “getting a full turn” or “completing the back swing” nonsense.
Taking a driver to parallel is fine if you are flexible enough. However, as the shafts get shorter, that long back swing will grow increasingly more troublesome for both hitting the ball solid and straight, but also distance control.
What good does it do you if you hit your 9-iron 155 one shot and 135 the next…especially when both shots are equally solid. To shorten the distances on your lower irons and wedges, you don’t want the same long back swing as a 5 iron or driver and then decelerate to hit it shorter. You want a shorter swing and to accelerate more. Just like I have said that ball position for a driver and wedge are significantly different, so should the length of swing on shorter clubs.
I will now post distances for my clubs and realize two things. I can hit all of them significantly farther, but seldom do for distance control purposes. Also, if you notice I hit my long irons and mid irons a lot farther than you and the short irons and wedges about the same…that should tell you are hitting your short irons too far and you need to shorten up your swing with these clubs.
One more thing. From the middle of the fairway with no wind, no down hill, etc, when I am in between clubs, I almost always hit the longer club and tone it down. Under normal conditions I rarely would hit 9 iron from 155 or 160 and so on. These are the max distances I play these clubs from.