9mm Star BM

[sheepherder]

Originally Posted by Steve Richards

...the Astra 400...is chambered for 9mm Largo and is unsafe with other 9mm cartriges...

Steve -

You reminded me of an article I read years ago...Luckily, I still have the book...

"Converting Spanish Pistols to 9mm P" is the name of the article; in George C. Nonte's 1974 book, "Pistolsmithing"...

Here's a brief excerpt -

http://www.wzrd.com/u/rbrennan/misc3/nonte.jpg

I've never tried anything like this, but I understand from my Garand friends that there is a "kit" of sorts for converting the M1 Garand to 7.62 x 51mm (.308 Win), consisting of a bushing similar to the one in the above article in principle, and two 20% overloaded cartridges to seat it...Nonte doesn't mention explosive seating, so I would imagine that his bushings are pressed in/interference fits...