a) An average neck and shoulder anatomy
To answer this question, you should read the following information carefully.
On the basis of all the factors listed under points 1-4, the drop of the butt plate in relation to the top edge of the rib will result. Within the different stock configurations, the shooter can use the adjusting range of the drop of the butt plate (see Adjustments).
The smaller the drop between the top edge of the butt plate and the principal axis of the barrels is, the less is the upper recoil of the shotgun with a correctly adjusted pitch.
The drop of the comb always refers to the position of the upper edge of the rib and also depends from the distance between eye and cheek-bone and from the requested upshot.
3. What is the position to place the shotgun at my shoulder?
a) Below the collarbone: more drop of the butt plate is necessary
► more upcoil at the muzzle
b) Above the collarbone on the muscle at your shoulder: less drop of the butt plate
► less upcoil at the muzzle
It also depends from the preferred stock length and posture whether 3.a) or 3.b) is recommendable for the shooter.
4. Higher ribs
Meanwhile, most gun manufacturers also produce shotguns with heightened ribs, which help to offer you a more relaxed shooting position and a reduced upper recoil after the shot, depending on the anatomic conditions.
a) 10/15 mm higher:
possible for all disciplines and favorable for shooters of categories 1.a) -d) and 2.b).
b) 20/25 mm higher:
recommendable for all trap, double trap and DTL shooters, especially for 1.b) and 2.c).
c) 30/35 mm higher:
for trap, double trap and DTL shooters from the categories 1.b) and 2.c)
Summary:
When ordering a shotgun or a new stock system, the shooter should seek analysis and advice from a professional shooting instructor or gun fitter with own shooting experience, who is knowledgeable on innovative shotguns/stocks. The completed questionnaire is one of the most important factors (see page 14). Moreover, photos from different perspectives – with your shotgun in shooting position – can be of additional assistance to find the best fitting stock configuration. Not only the balance of your shotgun but also your anatomy and preferred shooting position are of great importance for the configuration of your stock system. Most shooters prefer the posture from our first example. We keep the most popular and common shotguns available and will be pleased to help you with our advice.
5. Example for the following case:
An average neck and shoulder anatomy, body and head slightly leaning forward, weight on the left leg approx. 55 %, on the right leg approx. 45 % (right hand shooter). In this case, the standard version offers the best requirements for an individual stock adjustment to the shooter’s conditions.
Pic: EvoComp middle section drop 4°, shotgun with standard rib