Re: Stainless tubing/gun drill

Hi Smoke,

I can't stop laughing at your method of straightening a barrel.
You are correct, and it can be done, but my nerves would be on edge
if it were my gun.

However, if you're in need of a demonstration, I'll be happy to put
the bend in the barrel ! LOL. (got a barrle to use ?)

Dave

--- In CAD_CAM_EDM_DRO@y..., "Smoke" <smoke@t...> wrote:
> I presume you are a gunsmith too? If you have a good eye, you CAN
simply
> look down the bore and SEE if the barrel is straight or not. All
you have
> to do is look at the grooves. If they aren't concentric with the
entry and
> exit holes, the barrel in bent.
>
> At any rate, I might like to point out (as we learned in
school)...what
> difference does a minor amount of non-straightness cause? None!
Why?
> Well, all things being equal with each shot(angle of elevation,
point of
> aim, etc.), as far as the bullets coming out of the barrel are
concerned,
> the bullets will have the same point of impact because the
direction of the
> bullet leaving the bore will not change from shot to shot.
>
> BTW...a tip most gunsmiths won't tell you is bent barrels can be
> straightened...sometimes just by whacking the barrel on the edge of
a table.
> I even saw this demonstrated.
>
> If you really want those bores straight, devise a means of putting
the
> barrel liner in tension as was done on the Take down revolvers with
> interchangeable barrels. This idea existed long before it
was "invented"
> (put on the market).
>
> Smoke
>
> > Hi,
>
> > Does anyone know how to inspect/measure the straightness of a bore
> > such as a barrel?
> > I dont want to make guns, but i do make precision carbon fibre
tubes
> > on the inside of honed steel tubes.
> > After a lot of expensive trial and error I can mould smaller sizes
> > straight to 1 in 20,000 (e.g. at 47.6mm dia. i get max 0.1mm bow
over
> > 2metres).
> > On larger sizes, say 130 mm x 3500 mm long I cant afford the trial
> > and error.
> > someone once told me of an optical technique (you can tell by
looking
> > at them, he said), any thoughts.
> > regards
> > Steve
> >
> >