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barrel internal dimensions. ...


fieldwanderer
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Just a quick one really; the plastic coating stripped off of my cleaning rod so I've replaced it with heat shrink- made a nice job of it too if I say so myself!

 

But, now it's too fat for a .22 barrel!

 

At the moment, I'm thinking I'll just replace the .22 rod and keep the old one for when I get a 6.5mm but I need to know what size rod will fit before I go out and buy anything.

 

Is it .264 or does the rifling make it smaller?

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the new .22 rod's for my .22's but I'm hoping what I've done to the old one will fit the 6.5 when the time comes (just because I don't want to see it go to waste). IF however, it turns out it won't fit, I'll strip the heatshrink off and have a re-think (and spend a long time wishing I hadn't gone for the glue lined sort :oops: ) but not need to buy another rod.

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May not help, but:

6.5mm is 0.256 in imperial inches.

0.264inches is 6.71mm

 

Bullets are a little oversize though. A .22 is .224" for example, and a 6.5mm is .264; http://www.henrykrank.com/index.php?main_page=index&cPath=164_165_169_176

 

The reason for the question though, is the rifling's lands dig into the bullet a bit but the bullet's slightly larger and fits into the grooves http://www.firearmsid.com/Galleries/illustrations/rifling/rifling_6R.gif

 

So, I need to know the internal diameter of the lands - then I can see if my original rod will fit down it

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