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Thread: Rifling question

  1. #1

    Rifling question

    Hi all,

    This may be a dumb question, but I'm slightly concerned so here goes. Today I was cleaning my new PSA upper. I ran a brush through it first and it went really hard, but the gun is brand new and so was the brush so I kind of expected it. Then I tried running a patch through. It went really hard so I made the patch smaller and smaller until I was sure it wasn't too big, but it still went REALLY hard, like enough that I bent my cleaning rod a little. Finally got it out the other end and the plastic patch holder had some rifling grooves in it! Not too deep and not all the way around, only 4 groves, but still. I was shocked and checked what size the holder was supposed to be, sure enough its marked .22, but apparently doesn't fit properly in my 5.56 barrel. My question is, could I have damaged the barrel? I looked at the breach, which is the end I was cleaning from, but I don't really know what I am looking for. The ends of the rifling look very pronounced, almost like the could be bulged, but I think its just where the lands start and I've never really looked at that before. I didn't look at it with a bore light before cleaning so I have no reference point. I don't see how a plastic patch holder could damage the barrel, even if it was kinda forced through, but I've heard that tapping out a bullet from a squib load can, so thats why I'm concerned. What do you all think?

  2. #2
    Member
    Join Date
    May 2016
    Location
    Dallas
    If you're worried that you might have some damage from the cleaning rod rubbing against the rifling, it's possible. You would have needed a bore scope to do a before and after assessment to determine that. So that's water under the bridge. You by yourself cannot physically generate enough force to bulge the barrel with a cleaning rod. If you weren't pounding on it with a sledge hammer, it's ok.
    Whether you think you can or you can't, you're probably right.

  3. #3
    Thank you!


    Sent from my iPhone using Tapatalk Pro

  4. #4
    You did not hurt your barrel forcing a plastic jag and a cloth patch through it. There are other dynamics involved in removing a bullet stuck in the barrel due to a squib load.
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