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#600838 08/03/21 09:34 PM
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rtw Offline OP
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I had a fitting with Chris Batha a couple of years ago and have a completed sheet with my stock measurements. The try gun Chris used was an AyA, which has a concave rib.

When you consider purchasing a SXS with a raised rib, such as the Winchester Model 21, do you need to adjust the measurements-say for drop@comb and heel to alter the at face measurement? If yes, does the amount of drop need to be increased?

And, if it does need to change, how do you calculate/guestimate the amount of change required?

Thank you.

Last edited by rtw; 08/03/21 09:38 PM.
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I caution you about putting so much emphasis on "measurements" those were your measurements for THAT Gun.... Subject to change......with each subsequent gun....
Remember one very important principle....... Gun Fit is simply a matter of WHERE THE LOADS GO.... with any gun.... not .a set of carpenter measurements that will not likely carry over for multiple guns.....
Point of Impact connected to a particular Point of Aim......that is the essence of "Gun Fit"
Lots of guns and a LOT of Shooting behind my opinion.

Last edited by mel5141; 08/03/21 09:44 PM.
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Get fitted by three different guys and you'll end up with three different measurements.....

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Did you shoot moving clays with the try gun?
Did you have a gun stocked to those measurements?

I wouldn’t worry much about the rib configuration. That’s a pretty small factor in the overall effort of shooting flying targets.


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A gun fitting gets you close. You'll know roughly what sort of LOP, drop, and cast might work for you. But as mentioned above, each gun has characteristics that will affect how the final fit works.

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Gun fit for side by sides and doubles are slightly different. Use what you got as a starting point and adjust from there by shooting at a pattern plate. Shooters who remount can almost lock into a higher stock than if they shot drop gun. I can shoot most guns that are within a decent range of being what I normally shoot. If stocked too high I need to carry the bird above the bead to compensate for a higher point of impact. That is what the pattern plate will show you, how close your point of impact is to your aim point. Once you know that adjustments to the stock or your shooting style are easy.

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I’ve always heard that a gun fitting for a SxS vs an O/U is ‘slightly different’. So, what’s slightly different??


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Winchester 21's don't have a "raised" rib, they have a level rib with a concave surface for the most part. Vent rib models like a Trap or Skeet do have raised, flat-topped ribs.
JR


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Originally Posted by mel5141
I caution you about putting so much emphasis on "measurements" those were your measurements for THAT Gun.... Subject to change......with each subsequent gun....
Remember one very important principle....... Gun Fit is simply a matter of WHERE THE LOADS GO.... with any gun.... not .a set of carpenter measurements that will not likely carry over for multiple guns.....
Point of Impact connected to a particular Point of Aim......that is the essence of "Gun Fit"
Lots of guns and a LOT of Shooting behind my opinion.


Exactly what Mel said. Among other considerations: summer or winter? Heavy clothing or shirtsleeves? Weight of gun and where does it balance? Premounted or low gun? Instinctive shot or aimed? And on and on. Every gun will have different measurements and even those vary with the season. Good luck!


Everybody Is ignorant, only on different subjects. —Will Rogers
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Originally Posted by Joe Wood
Originally Posted by mel5141
I caution you about putting so much emphasis on "measurements" those were your measurements for THAT Gun.... Subject to change......with each subsequent gun....
Remember one very important principle....... Gun Fit is simply a matter of WHERE THE LOADS GO.... with any gun.... not .a set of carpenter measurements that will not likely carry over for multiple guns.....
Point of Impact connected to a particular Point of Aim......that is the essence of "Gun Fit"
Lots of guns and a LOT of Shooting behind my opinion.


Exactly what Mel said. Among other considerations: summer or winter? Heavy clothing or shirtsleeves? Weight of gun and where does it balance? Premounted or low gun? Instinctive shot or aimed? And on and on. Every gun will have different measurements and even those vary with the season. Good luck!


Concur with Joe and Mel that every gun is unique and varies from another. Having had a fitting does get you closer as a start point, but things will vary.

Reference the difference between side by sides vs over and unders. The barrel alignment gives a different recoil effect, in theory one pulls to the side some, while the other pulls up or down. Depending on cast and the particular gun the difference maybe greater or lesser.


Michael Dittamo
Topeka, KS
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