What would change point of impact of a Glock?

[r_w]

I am a novice when it comes to firearms, especially pistols. 

Went to the range (back behind the barn  ) to get a little practice.  Now my Glock 23 has always shot a little low, but this time it was LOW.  I didn't have any paper to see exactly how bad, but seemed to be about a foot at 10 yards.  It used to be about 4" low.  I tried both ball and my defense loads, same POI. 

I don't have great form, but I don't think I could do anything to make it THAT far off.  Been dry-firing and no flinch, jerk, push, or pulling.

What is wrong???

[tombogan03884]

 Did the sights get whacked ?

[twyacht]

Has it changed from what was shot in the past?

Sight picture,....rear notch lined and level with front sight usually comes in at 6:00 low on the target as your eyes see it.

The way your eyes perceive where I think the POI should be can change from pistol to pistol.

Did you try aiming 12:00 high on the target? 10 yds. should be close enough to "dial in" the way the profile of the given sights will affect POI.

What was the 10 ring? pics of your groups can tell a lot, if you wish to share, send some. Many here will offer great thoughts and advice regarding how a 5 shot string is hitting the target. 5 shots is enough to tell the patten without too many holes in the target.

Kinda like forensic science. "Grouping" may be something totally unrelated to the "gun", and rate of fire can effect everything.

Just my .02 cents. Post some target pics, no one here will ever make a derogatory remark regarding shots fired. We are all in the same boat whether a novice or pro. All we want is to get a consistent "group" out of any brand of firearm. And just shoot better.

TW

[r_w]

Dunno how the sights could change vertically, even if they did get whacked.  Side-to-side, yes, but not vertical.  I don't hold it gansta style

I did get glasses recently, hmmm

I was shooting plates and clays, so no pattern or pics of a group.  I will when I can get a chance, but even with the range so handy it is tough to get in some rangetime.  Between the job, tracking down more ammo and the honeydo list....

[MAUSERMAN]

Did you buy the gun new? If the answer is no someone may have put the wrong sights on it. My co-worker bought a G22 with the wrong night sights installed on it. The gun always shot low and to the left, so I got my G22 and let him shoot a couple mags and the gun was right on target. We took it to our local smith and he said the sights we all wrong, so he put some oe sights on it  and it shoots true now.

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[tombogan03884]

If the POI changed the between when you shot with out glasses to with glasses I think that is the problem.
Next time you get to shoot try a few groups with glasses then try a few with out them, see if it makes a differance.

[Timothy]

If the POI changed the between when you shot with out glasses to with glasses I think that is the problem.
Next time you get to shoot try a few groups with glasses then try a few with out them, see if it makes a differance.

Good point on the glasses.  Before I got my prescription safety glasses, I found myself adjusting my head in order to see through my bifocal.  It had the same effect as raising or lowering my front sight in relation to the rear.  If found myself really inconsistent even with my 1911, a design I've shot extensively over the last thirty years.  I'm really front sight focused now, seeing the rear is really only for bulls eye anymore.  Combat accuracy is good enough, if I can see it, I can probably hit it...

[cookie62]

I agree with the glasses, when I first started wearing bifocals it took a little while to get used to shooting with them

[twyacht]

Combat accuracy is good enough, if I can see it, I can probably hit it...

Big +1 on combat accuracy. Rob P. addressed this as well, and was spot on.

[ericire12]

+1 on the glasses.... let someone else shoot it too and see if they have a problem (preferably someone with decent eyes )