OK, so first I have to tell you about all I know about firearms is to
avoid having one pointed in my direction. Can this gun be
fired? Thinking about your cooling idea, I would think that firing
the gun would heat the barrel. Perhaps some combination of firing
the gun and applying the dry ice to the sight would generate the
expansion/contraction combination you desire. Now of course this may
not be terribly practical where your vise is located. My only
thought here is that firing a gun makes it hot. Figuring out if this
information is useful and how to apply it safely I will leave to
others with more knowledge on the subject.
-Steve Trovato
strovato@optonline.net
At 05:58 PM 11/27/2009, Gerald Brazil wrote:
> I am trying to remove a dove tail rear iron sight so that I can install a
>mount for a scope. I have made a block of wood to hold the barrel in my vice
>and it holds it quite nicely. I have been using a brass punch and a pretty
>big ball peen hammer to hit the punch. I have tried going both directions
>with no success. I have no idea if loctite was used when the blade sight was
>installed. If there was a way to super cool the sight without cooling the
>barrel it might loosen it up but since the sight is so small if I put dry
>ice on it the barrel would probably cool down too.
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