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Old 10-05-2019, 10:00 AM
luna3
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Screw size to plug scope mount holes



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I have removed the 330 peep sight from a 320b Boy Scout rifle; bought a real nice mount and a Simmons scope to put on it.

So now there two holes in the receiver I need to plug. I believe the thread 10x32, but can anybody confirm?

The original screws are too long to use.
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Old 10-05-2019, 10:16 AM
bone

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Yes 10-32, most hardware stores like true value or ace will have a selection of blackened plug screws.
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Old 10-05-2019, 11:11 AM
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Quote:
Originally Posted by luna3 View Post
I have removed the 330 peep sight from a 320b Boy Scout rifle . . . there two holes in the receiver I need to plug. I believe the thread 10x32, but can anybody confirm?
A 10-32 set screw won't be hard to find, but since these holes go through the receiver, you'll want to check internal clearance in the bolt channel and loctite to make sure they won't move - in or out.
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Old 10-05-2019, 02:42 PM
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iF YOU USE LOCTITE USE THE BLUE. tHE RED STUFF IS ALMOST FOREVER
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Old 10-05-2019, 03:31 PM
bone

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Clear finger nail polish will also work in a pinch of to help secure them.
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Old 10-06-2019, 07:02 AM
luna3
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Thanks gang, I was pretty sure, I appreciate the confirmation. It's a single shot rifle...I'll probably wait and see before using a thread locker though.

Yeah, the red stuff is a bear, but some heat from a propane torch will get it loose if you can get at it. Now the green stuff is another story.
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Old 10-06-2019, 11:31 AM
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Originally Posted by bone View Post
Yes 10-32, most hardware stores like true value or ace will have a selection of blackened plug screws.
True, but most of these locally seem to be hex head, which just looks like a smaller hole to me. The slotted filler screws look better to me.
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Old 10-06-2019, 11:53 AM
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If the holes go through into the receiver you want plug screws that have a stop built in.

Midway has the 10-32 screws with slot, I'm not sure if these have the stop on them or not.
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Old 10-06-2019, 11:58 AM
bone

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Originally Posted by edlmann View Post
True, but most of these locally seem to be hex head, which just looks like a smaller hole to me. The slotted filler screws look better to me.
Our stores have the slotted set screws as well.
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Old 10-07-2019, 07:23 AM
luna3
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Quick trip yesterday morning to the local Agway True Value and I have the two slotted plugs in hand. One dollar each. Today I will plug those holes, mount the BKLTech cantilevered rings on the receiver, and get that 22 mag scope on. This setup is for the wife to learn with, so she will get to do the sighting in...one deliberate shot at a time.

Oops, spoke too soon. Those plug screws fit a little loose, blue thread lock is in order.

Last edited by luna3; 10-07-2019 at 12:00 PM.
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Old 10-07-2019, 12:03 PM
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A dot of clear silicone on the threads of each screw will work nicely and the screws can easily be removed if desired.

John
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Old 10-07-2019, 12:05 PM
luna3
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John, that sounds like a good option.
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