**PLEASE HELP** Need info on front sight issue

[inSight-NEO]

I just received a Meprolight front bead sight for my Mossy 590 and noticed, upon installation, that the final thread is protruding (slightly) into the bore. I also noticed, upon doing all of this, that the stock bead sight (via Mossberg) slightly protrudes into the bore as well. Im hoping that since the stock Mossberg bead "penetrates" the bore somewhat slightly, that the Meprolight sight will be just fine. So, is this normal and much more importantly, safe?

It seems to me that, in both cases, the metal is fairly soft. Therefore, Im hoping that after several boxes of 00-buck or whatever, the residual threading will essentially be "smoothed" out normally. Is this wishful thinking?

 

[inSight-NEO]

C'mon...Certainly someone here can tell me whether or not a bit of thread "overhang" is safe or not.

Various members of other forums have inferred that this is ok, given that even the standard Mossberg bead sight protrudes into the bore just a bit and that they have fired shottys with such sights without issue. Im just needing to make sure Im not setting myself up for a dangerously plugged bore.

 

[PT1911]

I cannot imagine it will cause a problem while firing the gun.. do not quote me on that as I am not 100%, but I would hardly call this an obstruction.

 

[inSight-NEO]

I cannot imagine it will cause a problem while firing the gun.. do not quote me on that as I am not 100%, but I would hardly call this an obstruction.

Thanks for the response...I just feel that, given the nature of the shotgun, its better to ask stupid questions now rather than make stupid decisions later.

 

[mnrivrat]

Unscrew the bead - remove one thread with a file - screw it back in.

It should not stick into the bore.

 

[Geneseo1911]

Having any obstruction in the bore can be dangerous. Chances are the load would pass by one thread without too much trouble, but the potential for danger and/or a blown pattern are there. Besides, it's such an easy fix, why not do it right?

Aftermarket sights are always a bit longer as the man. has no idea if they are being screwed into the bore or a rib or both.

I made an 18.5" barrel for my pump, and the bead I installed stuck through as well. My solution was to take a rat-tail (round) file and carefully file the bottom of the post until it was even with the barrel. Taking out out would be safer for the barrel, but I was lazy, and a sawed-off barrel has no choke anyway, so I wasn't too worried about it.