This is my new Sten. There are many other like it, but this one is now mine...

[Vincent]

The book was specific not to EVER do it,

People put a lot of rubbish in the book. Then they get upset if you don’t follow their ridiculous rules. We had a “WARNING”, don’t do this!! In the next revision, they removed the warning and made it the procedure that had to be followed. So, I asked why they made the change and was told “nobody was following the book.” Then they got upset with me for reminding them of the old saying, “Nonsense breeds noncompliance.”

Complete cartridge obturation of the chambered cartridge.

Oh. Thanks.

Why does the mag fed case have the more shiny ring?

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[browningautorifle]

Why does the mag fed case have the more shiny ring?

Bit of guesswork there, suspect the round just settling in the chamber is not being hammered as hard as the round fully seated.

People put a lot of rubbish in the book.

In our case, the Small Arms cell of our Infantry School writes the pubs about weapons handling. I was posted there at the time we were improving the interim pubs on the current family of weapons and I listened to some of the deep thinkers and their reasoning. Simple things like doing a complete unload of the C6(MAG) before changing the barrel...the weapon was designed to change in mid stride. Weapon fires, stop, change barrels and weapon goes on. Just a safety catch in between...nope! We have to go through bells and whistles to change barrels...

The books were written by men that had or have very little complete understanding of firearms...like having slave labor writing a book. You get what you get and spend ages trying to change it.

There's way more to that story but it will have to wait until we're sitting across a BBQ from each other to tell...