Tec-9 & Winchester case wall thickness


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ranger7
January 11, 2006, 01:29 AM
Just bought a slightly used specimen of the notorious Tec-9 as another "conversation piece" or fun range gun. My Thompson semi-auto carbine also fits these categories with not much of a real "useful purpose". (I am aware that Tec-9s are not known for either their accuracy or reliability.)

I downloaded the manual for the Tec-9 and there is a page right near the beginning that lists various ammo brands and their shell casing thicknesses. The manual says that because the Tec-9 is blowback operated, case thickness is very important. It implies that as the case starts to extract, it's still under quite a bit of pressure and if the case isn't thick enough, the case wall may blow.

The manual shows some brands as "excellent" some as "recommended" and some as "do not use". The question I have concerns Winchester which they show as .021 (one of the thinnest.) I was planning to use Winchester white box as blasting ammo for the Tec-9.


Since the gun, manual and the data is probably at least 10 years old, I was wondering if the .021 is the thickness of the current Winchester cases? Also am wondering if anyone has encountered problems of this type with Tec-9s? (No need to re-hash horror stories about Tec-9 "jam-o-matics.)

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