I occurs to me that the new student studying for CCW will likely be overwhelmed, and perhaps initially confused, by all of the new things to learn. I know I was.
Let's go back over the bidding, and break it down into pieces.
They generally advise against shooting a defensive carry pistol further than 10 yards or so.
If they are referring to
practice, I disagree---one may have to shoot at longer stances.
However, it is much more likely that a a violent attack requiring the use of deadly defensive force will occur at a much closer distance, and it is therefore prudent to invest
most of one's time developing the skills needed for more likely scenarios.
I think if I can hit at 25, then closer should be easier...
That
sounds reasonable, but....
Defending against a close-quarters attack will require drawing and shooting
extremely quickly; firing very rapidly, to achieve multiple hits while there is time to do so; and a level of precision sufficient only to hit an area perhaps as large as the upper chest.
Think in terms of drawing in a second and a half and firing at a rate of several shots per second.
That will put an attacker charging from seven yards--the proverbial "Tueller distance" (discussed in the links mentioned below)
extremely close to you before you can shoot.
The skills needed to do that differ markedly from those needed for more precise shooting at a greater distance.
They say shooting an assailant further will get you into trouble.
To address that, one needs to understand when deadly defensive force is justified, and when it is not.
I suggest searching for posts by Frank Ettin containing the kew words Lisa Steele, and reading all of the posted links.
Should you want to discuss it further, post in ST&T.
I also think this advice comes from an assumption that one isn't dealing with an assailant armed with a firearm.
That is relevant to the issue. MS Steele addresses that.
It has to do with the distance at which an attacker can do
harm with a contact weapon.
That distance is arms' length. But woe be the defender who lets an attacker get that close.
That's where the "Tueller distance" of seven yards come into play. It has to do with when drawing is necessary before it is too late, and
not with a distance at which to practice shooting.
I cannot overemphasize the importance of realistic defensive training.
I hope you find this helpful.
Good luck!