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Turkey Guns & Shooting => Turkey Guns => Topic started by: YukonC on February 13, 2021, 12:48:15 PM

Title: Rib mounted red dot accuracy issues?
Post by: YukonC on February 13, 2021, 12:48:15 PM
Has anyone had any issues with a rib mounted red dot setup? I am about to do this to a bps that is not tapped. Just wondering if it moves at all as barrel heats up or when removing snd installing barrel after cleaning? If so it's getting tapped.


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Title: Re: Rib mounted red dot accuracy issues?
Post by: USMC0331 on February 13, 2021, 12:50:44 PM
I have one on my 870 no problems thus far.

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Title: Re: Rib mounted red dot accuracy issues?
Post by: Tom007 on February 13, 2021, 12:56:45 PM
Ditto, no issues with mine.......they work great.best of luck
Title: Re: Rib mounted red dot accuracy issues?
Post by: davisd9 on February 13, 2021, 01:00:57 PM
It is fine
Title: Re: Rib mounted red dot accuracy issues?
Post by: Fl strutter on February 13, 2021, 02:21:25 PM
It shouldn't move when removing barrel for cleaning like it would if reciver mounted because it's attached to the barrel. The meadow creek mounts are solid.
Title: Re: Rib mounted red dot accuracy issues?
Post by: YukonC on February 13, 2021, 02:24:35 PM
This is good to hear that is what I have ordered. I just came across a random thread about the dot moving when the barrel warms up during zeroing and that some claim when you remove and install the barrel it needs to be re zeroed.


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Title: Re: Rib mounted red dot accuracy issues?
Post by: USMC0331 on February 13, 2021, 02:53:23 PM
Mark your mag. Cap and tube . That way when you remove , line them back up and your good.  If not you will have a difference on impact. (https://uploads.tapatalk-cdn.com/20210213/02c35940888dc89f814501b603dfa43f.jpg)

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Title: Re: Rib mounted red dot accuracy issues?
Post by: Tom007 on February 13, 2021, 03:33:24 PM
Quote from: USMC0331 on February 13, 2021, 02:53:23 PM
Mark your mag. Cap and tube . That way when you remove , line them back up and your good.  If not you will have a difference on impact. (https://uploads.tapatalk-cdn.com/20210213/02c35940888dc89f814501b603dfa43f.jpg)

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Great tip, thank you....
Title: Re: Rib mounted red dot accuracy issues?
Post by: USMC0331 on February 13, 2021, 03:42:16 PM
May you bust many big gobblers.

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Title: Re: Rib mounted red dot accuracy issues?
Post by: stinkpickle on February 18, 2021, 12:29:15 PM
Since it's mounted directly to the barrel by the rib, removing and reinstalling the barrel shouldn't do anything to it.
Title: Re: Rib mounted red dot accuracy issues?
Post by: USMC0331 on February 18, 2021, 12:32:21 PM
If that magazine tube is not tightened to the same spot your point of impact will change.

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Title: Re: Rib mounted red dot accuracy issues?
Post by: davisd9 on February 18, 2021, 12:51:28 PM
Quote from: USMC0331 on February 18, 2021, 12:32:21 PM
If that magazine tube is not tightened to the same spot your point of impact will change.

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Not when it is mounted to the rib, it will if mounted on the receiver. I would mark it and do as you suggested anyway.
Title: Re: Rib mounted red dot accuracy issues?
Post by: stinkpickle on February 18, 2021, 12:51:55 PM
Quote from: USMC0331 on February 18, 2021, 12:32:21 PM
If that magazine tube is not tightened to the same spot your point of impact will change.

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How exactly?  The relationship of the rib to the barrel should remain the same, unless tightening the lug somehow bends the rib...or worse yet, it bends the barrel.
Title: Re: Rib mounted red dot accuracy issues?
Post by: USMC0331 on February 18, 2021, 01:00:37 PM
When the mag tube is not completely tight or a little play is left  where you have a bolt going through the hole  and the mag tub cap is not tightened to where there  is wiggle room,  the barrel will slightly move left to right or up and down. When you pull the trigger your point of impact will change.

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Title: Re: Rib mounted red dot accuracy issues?
Post by: davisd9 on February 18, 2021, 01:09:08 PM
Quote from: USMC0331 on February 18, 2021, 01:00:37 PM
When the mag tube is not completely tight or a little play is left  where you have a bolt going through the hole  and the mag tub cap is not tightened to where there  is wiggle room,  the barrel will slightly move left to right or up and down. When you pull the trigger your point of impact will change.

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With the red dot on the rib, it will follow the barrel. As long as the the mag tube cap is tight you are fine
Title: Re: Rib mounted red dot accuracy issues?
Post by: stinkpickle on February 18, 2021, 01:10:17 PM
Ahhhh, I see what you're saying.  Yeah, not having it tight might cause all kinds of problems anyway.
Title: Re: Rib mounted red dot accuracy issues?
Post by: USMC0331 on February 18, 2021, 01:55:05 PM
Quote from: davisd9 on February 18, 2021, 01:09:08 PM
Quote from: USMC0331 on February 18, 2021, 01:00:37 PM
When the mag tube is not completely tight or a little play is left  where you have a bolt going through the hole  and the mag tub cap is not tightened to where there  is wiggle room,  the barrel will slightly move left to right or up and down. When you pull the trigger your point of impact will change.

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With the red dot on the rib, it will follow the barrel. As long as the the mag tube cap is tight you are fine
That was my point. When I pattern,  I clean between shots ( remove barrel) each time. By marking the way I do,  it ensures the barrel and mag tube cap are exactly in the same spot each time.  I Learned this the hard way.

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Title: Re: Rib mounted red dot accuracy issues?
Post by: Tom007 on February 18, 2021, 02:05:22 PM
Quote from: USMC0331 on February 13, 2021, 03:42:16 PM
May you bust many big gobblers.

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Ditto to you my friend..
Title: Re: Rib mounted red dot accuracy issues?
Post by: lowoctane on February 25, 2021, 10:15:56 PM
Quote from: stinkpickle on February 18, 2021, 12:29:15 PM
Since it's mounted directly to the barrel by the rib, removing and reinstalling the barrel shouldn't do anything to it.

Ditto! Drilled and tapped a red dot to the rib of my 870 SM about 14 years ago and no issues...  :camohat:
Title: Re: Rib mounted red dot accuracy issues?
Post by: lowoctane on March 19, 2021, 05:50:04 PM
(https://uploads.tapatalk-cdn.com/20210319/1152d1cd1e5e89e69cec5b05782c0eb1.jpg)
Quote from: lowoctane on February 25, 2021, 10:15:56 PM
Quote from: stinkpickle on February 18, 2021, 12:29:15 PM
Since it's mounted directly to the barrel by the rib, removing and reinstalling the barrel shouldn't do anything to it.

Ditto! Drilled and tapped a red dot to the rib of my 870 SM about 14 years ago and no issues...  :camohat:


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Title: Re: Rib mounted red dot accuracy issues?
Post by: Tom007 on March 20, 2021, 08:28:32 AM
Quote from: lowoctane on March 19, 2021, 05:50:04 PM
(https://uploads.tapatalk-cdn.com/20210319/1152d1cd1e5e89e69cec5b05782c0eb1.jpg)
Quote from: lowoctane on February 25, 2021, 10:15:56 PM
Quote from: stinkpickle on February 18, 2021, 12:29:15 PM
Since it's mounted directly to the barrel by the rib, removing and reinstalling the barrel shouldn't do anything to it.

Ditto! Drilled and tapped a red dot to the rib of my 870 SM about 14 years ago and no issues...  :camohat:


Nice set up!

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Title: Rib mounted red dot accuracy issues?
Post by: wchadw on March 20, 2021, 09:27:28 AM
I have been shooting a rib mount rmr on my gun for last 3 years and haven't noticed any problems. Make sure and use a little blue locktite to keep mount/sight from working loose


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