.4 oh 9ine??? four-o-nine?

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QuietWhisper

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I have heard from one friend about this mystical chambering of a .40 s&w brass loaded with a 9mm diameter bullet(similar to .357sig only utilizes .40 brass? Does anyone know anything about this chambering? I am somewhat interested in the possibility of making an Open gun in this caliber but I cant find any info. I have heard guys in southern Alberta are all about it, is this true? Any info would be greatly appreciated thanks guys!
 
I've heard nothing of that before, but I know a few guys shooting 9mm major. As far as I know that's just a really hot 9mm round.
 
Yeah its called reloading .357sig with cheap available .40 cal brass instead of buying expensive hard to find factory .357 sig and or brass.
 
ndb86 said:
What makes it better than .38 super? .40 brass is easier/cheaper to find?
Click to expand...
Yes, also with the increased case capacity; you can use a slower burning powder that makes the comps work even easier.

It's a cheaper solution to the old 9X25s (necked down 10mm invented by Leatham back in '93)

The powder of choice would be something like H110 (usually used in 44 magnums)

Necked down 40s are slightly different length than 357 sig, so you have to be careful to make sure things work.

It has to be done by a custom smith - Armco used to do them a lot.

Dies aren't really difficult to attain.

It never took off outside canada because it reduces capacity in the open gun.

Like John said; 9X40 is the most popular way to describe it.
 
9x40
Armco still does them :)
Sean pretty much nailed it
Custom dies made from 357 sig.
A friend had one made many years ago; he's over 100,000 rounds and it still rocks.
I went to it because all I had to do was make a new top end for my standard gun and everything else works (same mags), plus they are LOUD,lol
Can't wait for the home reno's to be finished, I haven't even shot it yet...
 
Freedom Ventures said:
Yes, also with the increased case capacity; you can use a slower burning powder that makes the comps work even easier.

It's a cheaper solution to the old 9X25s (necked down 10mm invented by Leatham back in '93)

The powder of choice would be something like H110 (usually used in 44 magnums)

Necked down 40s are slightly different length than 357 sig, so you have to be careful to make sure things work.

It has to be done by a custom smith - Armco used to do them a lot.

Dies aren't really difficult to attain.

It never took off outside canada because it reduces capacity in the open gun.

Like John said; 9X40 is the most popular way to describe it.
Click to expand...
Thanks for the info! Iam going to give Armco a call!
 
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