Guns wont shoot to point of aim.
 

This may be a silly question and may have been covered before but it seems like all of my shotguns shoot high and to the right. Is there something I can do that dosn't include altering the guns.

Are they all the same stock dimensions?
Your findings would suggest that you ideally need adjustment to your stock drop and cast.

aim low to the left

a proper fitting is the right fix, but a gun that shoots high needs the comb lowered. right/left is a cast adjustment

http://www.fieldsportltd.com/dr_shotgun/dr_shotgun.php

George Bird Evans had a simple 16 yard test to figure adjustment- i will get the book out tomorrow

Have not tried all of them on paper but it seems to be a continuous pattern to them. An no they don't all have the same stock dimensions. Never used to have this problem before. I hate having to compensate.

Before you can make any determination at all, you need to proper patterning.

The process is to shoot at a patterning board with a central target from 16 yards. 6 quick successive shots are suggested that way you can guage consistency of patterning over the multiple shots.

Then you must determine where the center of the shot concentration is. Note the vertical and horizontal variance of this point from the point you were aiming at.

Are you shooting right or left handed? If you're a lefty, it could be that your master eye has changed to right-sided. For height, are you sure that you are getting your face firmly on the stock? (wood to wood)

No I am right handed and still right eye dominant. I have tried several different guns lately and every one shoots high and to the right. I wonder if a flinch would cause this. Brian I will try your suggestion after Turkey season is over. Until then I just have to compensate.

I would first pattern the gun off a bench with the gun in a good solid grip. Use the same sight picture you normally see over the rib and shoot. Make sure when you pull the trigger, you are not jerking the gun as you pull the trigger. It's important to have the same sight picture off the bench as you see when you are shooting upright. Take your measurements of the pattern from the bench. Now shoot offhand just like you would in the field. Compare the results. I wouldn't be too concerned if the left/right from center is slightly off due to the barrel convergence. If both vertical measurements between bench and offhand are the same and they are too low, your only option is to raise the comb. When you get the comb raised, you will see more rib which will make the gun shoot higher.

Is this a new problem? If yes, what has changed?

If they all do the same thing maybe it's the aim, not the gun?