CT;
JMCCOYB knows what he's talking about.
In mentioning how the gun fits, he introduces something that too few new shooters consider or understand.
There are five primary stock dimensions that are chosen by manufacturers when they design guns. They are:
length of pull (LOP) the distance from the forward center of the trigger to the center of the recoil pad determined primarily by the length of the shooter's neck,
drop at the comb, the distance form the rib level down to the top surface of the stock where the cheek makes contact (actually,
facedrop at the comb, the need for which is determined primarily by the distance between the shooter's eye and his cheekbone,
drop at the heel, the distance from the rib down to the tip of the recoil pad (heel), [On a Monte Carlo stock there is considerably more difference in the two drops than with a straight stock.], determined by the height of the eye above the shoulder,
pitch, the angle of the recoil pad relative to the bore (barrel) of the gun, determined by the the chest configuration of the shooter, and
cast, the angling of the stock to the right (for right-handed shooters) or to the left, for left-handed shooters when viewed from the rear.
The length of the stock is usually not a problem with guns bought off-the-shelf. Most of the time, it is close enough, just over 14 inches.
The drop at the comb is often a much more serious matter. The correct drop for any shooter depends on the distance between his eye and his cheekbone. It is the most important of all the dimensions because it positions the eye that acts like the rear sight on a rifle; it must be in the right place. The correct drop at the comb allows the shooter to apply firm cheek pressure on the comb and look along the top surface of the rib or very slightly down onto it. When the eye is too high, he is looking down at the rib at too great an extent and the gun will shoot higher than expected. When the comb is too low, he will not be able to see the rib; the action or receiver will block the view of it.
The correct drop at the heel is determined by two things, the length of the shooter's neck and the amount of shoulder slope. When the drop isn't right, neck strain, raising the cheek off the comb, and improper gun mounting is the result.
Pitch is another important dimension. Chest configurations are varied and so must be the angle of the recoil pad. Only the upper two-thirds of the pad need make contact with the shoulder, just inside of the shoulder joint. If the bottom (toe) of the pad sticks out too far, not only does it jab into the chest during recoil but will cause the barrel to rise excessively. (The rotational point around which the gun rotates during recoil is farther below the level of the barrel.)
Cast exists (or in some cases should exist) for shooters with wide shoulders or other than average face width or distance between the eyes.) Most US guns have no cast; that is because cast relates to handedness. Cast
off to the right cannot be used well by left-handed shooters. The same is true for cast
on. It is very difficult to use by right-handed shooters.
Off-the-shelf guns fit less than half the people that buy them. In some cases they fit well enough that the slight contortions necessary by those that shoot them is of little importance. For others, however, the bizzare shooting form needed to shoot their guns, prevents them from ever being a good shot.
The one saving grace about all these stock dimensions is that they can all be changed. That is what keeps stock fitters in business. The only reason there aren't more of them is because only a small percentage of shooters realize how important a well fitting gun really is. If they did, stock fitters would be rich and going crazy trying to complete all the work they have.
If you don't want to visit a stock fitter to learn the dimensions that are necessary to have a well fitting gun, click on the url below and consider investing $14 to learn everything you'll ever need to know about stock fitting and be able to fit your gun to yourself and the type of shooting you're involved with -- trap, skeet, sporting calys, or hunting.
Rollin
http://stockfitting.virtualave.net/