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Jun 14th, 2026
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Joined: Sep 2026
Posts: 3
Boxlock
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Boxlock

Joined: Sep 2026
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I have a 12 gauge Model 21 that is somewhat harder to open after firing both barrels. The issue does not occur after firing only one barrel. The top lever moves like it should, so it doesn't seem like a bolt issue. Ammo has been a mix of Winchester and Estate dove loads (not brass bases). The gun is new to me, so I don't have any history to compare to. Is this normal? If not, any ideas what could be causing this?

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Sidelock
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Does it do it using snap caps?


Mike Proctor
2 members like this: Stanton Hillis, Ted Schefelbein
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Sidelock
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Sidelock
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Just an idea based on being around 21's some.

Is the gun hard to open in comparison to other guns you own? The reason why it's easier to open after only shooting one barrel might be due to only having to cock & reset things on one barrel as opposed to doing it on both barrels. The gun might need a good cleaning of the action. Does it open easier on either barrel after firing a single shot, or have you tried shooting the other barrel first and see how it opens in comparison to the other barrel.

On the outside chance there might be a mechanical issue like a broken hammer spring on one barrel that can still fire that barrel but might be jamming in the bore of the action for that spring. There's lots of variables but without the gun in hand it's hard to say one way or another what's actually going on if anything.

1 member likes this: Stanton Hillis
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Sidelock
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my 21 is just slightly harder to open when both barrels have been fired, but not difficult. Check your primers to see if there is a drag mark on 1 of them. You could also take the barrels off, pull the trigger with a block of wood or a quarter against the firing pin hole, now compare how far the firing pins protrude. Don't try this unless you know how and are comfortable recocking the hammer without the forearm on.


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1 member likes this: Richard Hale
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Sidelock
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Sidelock

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Check your primers to see if there is a drag mark on them.


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Hal M. Hare
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Sidelock
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Is your Model 21 an ejector gun or an extractor gun? Extractor Model 21s are notorious for being hard to open after firing.

1 member likes this: Stanton Hillis
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Boxlock
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It is an ejector gun. The issue does not occur with snap caps, as I recall.


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