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 Post subject: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Thu Sep 10, 2020 3:36 pm 
Field Grade

Joined: Thu Sep 18, 2014 7:36 am
Posts: 62
I was wondering what the majority of you AL391 Sporting Clay shooters have your stock shims set at? I plan on visiting the patterning board but wondered what the consensus is out there. Thanks.




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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Thu Sep 10, 2020 3:55 pm 
Crown Grade

Joined: Thu Jul 31, 2008 11:12 am
Posts: 5529
60 for me. Both shims must be set the same. Remember DX for RH and SX for LH.


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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Thu Sep 10, 2020 6:21 pm 
Tournament Grade

Joined: Sat Aug 27, 2011 12:10 pm
Posts: 193
I just changed to a 50 on my 390 which is closer to parallel. 390/391 use the same stock and shims


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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Fri Sep 11, 2020 8:57 am 
Limited Edition

Joined: Fri Sep 24, 2010 8:15 pm
Posts: 436
Chitownhoff wrote:
I was wondering what the majority of you AL391 Sporting Clay shooters have your stock shims set at? I plan on visiting the patterning board but wondered what the consensus is out there. Thanks.


Hi Chitown:

Is your question actually "what Vertical Point of Impact do shooters prefer?" If so, that's not the same as asking which shim to use.

For which shim to use, why do you think there would be any "consensus" on this topic?

In your thread title, you asked about the Drop dimension . . . the various shims available for your gun are intended to personalize the gun to better fit you. And for Drop, you choose whichever shim positions your eye at whatever height above the rib allows you to shoot your best and yield the vertical Point of Impact you want/need with this gun and the type of shooting you do. The exact shim other shooters might use to meet these requirements is essentially irrelevant for you. Everyone's different -- that's why there are different shims.

In other words, your question is basically the same as "My gun has an adjustable comb. What Drop value should I set it to?" A specific numerical answer for an individual shooter is not possible.

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Last edited by TrapshooterJeff on Fri Sep 18, 2020 5:52 pm, edited 1 time in total.

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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Fri Sep 11, 2020 12:19 pm 
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Joined: Sun Jul 27, 2003 3:37 pm
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As Jeff is saying, the gun should be set up to fit YOU and your shooting style... which CAN change over time.

That said, I believe it's true that a gun with too much drop is easier to shoot well than one with not enough drop, so you might want to err on the side of maximum drop to start with.

Also, don't be afraid to experiment with the "cast" setting. Not everyone's face is shaped the same and not everyone "cheeks" the gun the same. For a very long time I shot one of my 390's with cast "ON" (which is typically for left handers) even though I'm a right hander.

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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Sat Sep 12, 2020 8:54 am 
Tournament Grade

Joined: Sat Aug 27, 2011 12:10 pm
Posts: 193
It’s really just a substitute for an adjustable comb


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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Tue Sep 15, 2020 2:37 pm 
Presentation Grade

Joined: Wed May 16, 2018 7:55 am
Posts: 714
55 for me on my 391 Teknys Gold Sporting back in the day, although I had a monte carlo factory stock so that's why the drop was so much compared to others.

Everyone is different and shims can be hand anywhere for a good value, so worst case get a few extra and head out and go shoot.

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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Tue Sep 15, 2020 9:09 pm 
Tournament Grade

Joined: Mon Jan 29, 2007 10:14 am
Posts: 128
I have to make my own shims to raise my comb. Family lore is that I'm related to Elizabeth Warren.


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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Fri Sep 18, 2020 2:07 pm 
Diamond Grade

Joined: Wed Nov 25, 2009 3:43 pm
Posts: 1455
I always turn the 65mm shim upside down and that makes it about as high as you can go. Which isnt that high btw. Mine measures about 1 3/8" by about 2"


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 Post subject: Re: Beretta 391 stock drop setting for Sporting Clays
PostPosted: Fri Sep 18, 2020 2:49 pm 
Limited Edition

Joined: Fri Jul 24, 2020 2:22 pm
Posts: 413
dcr5468 wrote:
It’s really just a substitute for an adjustable comb

Not so much. Two significant differences. The adjustable comb can only be raised, but the shims can move the stock up or down. And second, the shims don’t just adjust the comb, they adjust the heel too and more than the comb, because of the greater distance from the shim to the heel than to the comb.



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