Comparing two shotguns w.r.t fit

[Junaid86]

@12Gauge and other shotgun experts.

I have an over/under shotgun perfectly fitted to me with dimensions:
Gun #1:
LOP: 14 1/4
DOC: 1.75 in
DOH: 2.5 in
pitch : neutral

I have got hold of a semi auto shotgun, which is synthetic stock(unfortunately), with following measurements:
Gun#2:
LOP: 14 1/4
DOC : 1.375 in
DOH: 2.5 in
pitch : positive

Can the experts guide me how to shim/modify the synthetic stock for Gun#1 dimensions, here only drop at comb is off by a good .4 in, which is a lot.

[12GAUGE]

AoA Brother.

i could be wrong but you can easily add a shim made out of rubber (my personal favorite=synthetic football leather courtesy of Denovo sb) and fix it using double tape.

Keep following in mind:

1. Shim is not a permanent solution. It will move and will eventually come off.

2. Shim can also change your cast so do not go overboard with this. Just use a small strip of whatever material.

Regards.

[Fudgepacker]

I've known people who have even used a toothpick as a makeshift shim. But for a more permanent solution, try a piece of aluminum. A slice off a pop can (maybe folded over) should be perfect since not a lot of shim should be needed to get .4" of drop. You can crank down hard on it and it won't compress or degrade over time.

[Junaid86]

@12Gauge, this shim is supposed to go between reciever and stock, right?
Can you see the 2nd gun's slope is too much at comb.

[Fudgepacker]

Yes, between the stock and receiver. Shim the top side for more drop and on the bottom for less.