Other Scratches on HW97/TX200 style sliding breech

PaulK62

Member
Apr 4, 2024
90
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With the TX200/HW97/Diana 460, etc., style of breech opening, are fine scratches a common thing on the visible silver portion of the compression tube that slides back and forth? I've seen several guns that have them, including one of mine (HW97). They aren't very deep, but I'm surprised that such high-end springers don't have a better fit and polish of the metal-to-metal surfaces to prevent scratches from forming.
 
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It's not just fit and finish responsible for sliding tube scatches. Dust and dirt in there will scuff them up too. I haven't worked on anything but Weihrauchs but usually the tube interface is machined fine. Its machining debris or swarf that gets in there and scratches them up.

For the record lubing them up can make it worse because the lube acts like a dirt magnet. The key is to clean it out very well and only lightly oil the underside.