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Threaded barrels

Posted: Mon Mar 10, 2014 10:45 am
by Liver
Is there any advantage in 13.5 x 1 mm VS 1/2 x 28 assuming you are starting from scratch and don't have anything yet?

Re: Threaded barrels

Posted: Mon Mar 10, 2014 11:17 pm
by whiterussian1974
Liver wrote:Is there any advantage in 13.5 x 1 mm VS 1/2 x 28 assuming you are starting from scratch and don't have anything yet?
Slightly larger bearing surface.
12.7*3.1416=39.9 vs 13.5*3.1416=42.41
But at the level of torque that a pistol generates, it really doesn't matter. Just the difference b/t metric vs English Imperial Units.

Re: Threaded barrels

Posted: Mon Mar 10, 2014 11:26 pm
by Bendersquint
Imperial supposedly has more tendency to unscrew than Metric. I haven't witnessed this personally though.

Metric can get away with less threads than imperial.

Metric has o-rings that help keep the threads clean and the part in place.

More US smiths will cut Imperial threads over Metrics.

I am sure there are more comparisons, just off the top of my head....

Re: Threaded barrels

Posted: Tue Mar 11, 2014 12:23 am
by Liver
Bendersquint wrote:Imperial supposedly has more tendency to unscrew than Metric. I haven't witnessed this personally though.

Metric can get away with less threads than imperial.

Metric has o-rings that help keep the threads clean and the part in place.

More US smiths will cut Imperial threads over Metrics.

I am sure there are more comparisons, just off the top of my head....
Thanks. I am contemplating an HK and was thinking of keeping it all metric.

Re: Threaded barrels

Posted: Tue Mar 11, 2014 12:30 am
by Bendersquint
Liver wrote:
Bendersquint wrote:Imperial supposedly has more tendency to unscrew than Metric. I haven't witnessed this personally though.

Metric can get away with less threads than imperial.

Metric has o-rings that help keep the threads clean and the part in place.

More US smiths will cut Imperial threads over Metrics.

I am sure there are more comparisons, just off the top of my head....
Thanks. I am contemplating an HK and was thinking of keeping it all metric.
Sounds good!

Re: Threaded barrels

Posted: Tue Mar 11, 2014 2:21 am
by continuity
Liver wrote:... I am contemplating an HK and was thinking of keeping it all metric.
For what reason? Form or function?