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Bore sighting lasers & trap guns.


Robden
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I've used this title because I can't word the question I am wondering about.  Why people say that one needs a trap gun to shoot trap disciplines.

It is said that trap guns are designed to shoot high.......but at what point?

So assuming everything is accurate, using a bore laser on a "+" at 20yards.  I then set the gun up so that looking down the barrel, the front bead is dead on the "+", together with the laser dot.  If then, the gun was loaded and fired at the "+", would a trap gun (automatically) shoot high/over the mark.  Or, should the front bead be below the "+" so that the POI will be above the mark?  If it's the latter, then a trap gun is only shooting high because of the way it's been set up....as indeed most guns do.  I hope that anyone bothering to read this, can see what I mean.

Edited by Robden
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3 hours ago, London Best said:

You are correct. With any shotgun the point of impact depends upon the height of your aiming eye above the standing breech. Using a standard non-adjustable stock, the comb on a “trap” gun would be fashioned to hold the face higher than on a less specialist type of gun.

So, just to clarify. On a sporter, looking along the barrel, the centre pip (if there is one) would appear as the infamous figure of 8. To use the same gun as a trap gun, the head would be a touch higher looking slightly downward on the rib, and creating a small gap between the front and mid bead?

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27 minutes ago, Robden said:

So, just to clarify. On a sporter, looking along the barrel, the centre pip (if there is one) would appear as the infamous figure of 8. To use the same gun as a trap gun, the head would be a touch higher looking slightly downward on the rib, and creating a small gap between the front and mid bead?

That is/would be true unless the trap gun had a higher mid bead, in which case there would still be the figure 8. I have no idea if trap guns use such a set up as I have never used one. 
If you think of the shotgun as a rifle, to make the rifle shoot higher you would raise the rear sight (iron sights). On the shotgun your aiming eye is effectively the rear sight, so the higher the comb, the higher the gun will shoot. Having said that, I am not a clay shooter and when I shoot a shotgun I just look at the birds head, put up the gun and pull the trigger.

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If you bore-sight with a laser it will come out true to where the  centre of bore is pointing.  Trap guns have a degree of inbuilt lift due to your point of aim being modified by stock height and/or rib incline etc.  But then, you can lift any gun's point of aim by playing around with stock/rib height / incline etc.

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