So I did a lot of searching regarding the saw cut gas cylinders, found a lot of info about cut angle and dates the cuts were used, but didn't find an explanation about just how the cut makes the GC more stable. I am guessing from looking at pictures (since my hands have never seen a Gas Trap) that the kerf from the cut is closed a bit when the sight screw is tightened, causing the GC to "bite" the barrel just enough to give it additional stability? Is this the physical explanation of the effect of the cut?
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I just read an old article about why this was done. I believe the article was in Garand Times. I'll take a look in the morning to see if I can find it again. If I do, I'll post an excerpt up here for you.Welcome to the Addiction! -
The saw cut was done to save a batch of barrels that had had the od turned a few thousandths undersize. It was cheaper and quicker to modify the gc's rather than scrap a lot of barrels.
JonComment
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They also accomplish what the OP mentioned. A saw cut is often sought after by match shooters since they stay tight even when taken on and off repeatedly and they do not move. If you use one, the best version is the one with the straight or very slightly angled cuts. Saw cuts with sharp angled diagonal cuts will break if tightened too much where they are very narrow. Sometimes even when they are tightened properly.Comment
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Its another interesting interesting variation in the long life of this fantastic old rifle.Comment
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