.38-9mm conversion

Status
Not open for further replies.
For starters, the .357 Mag chamber is bored .380" in dia.

The tapered 9mm case is .391" at the base, so you have less chamber wall thickness.

Then, the .357 is loaded to 35,000 PSI.
The 9mm is loaded to 38,500 PSI in +P loadings.

rc
 
I should have stated that the alum. j frames won't take the pressure - not for very long unless I am completely out in left field. The scandium ones will for sure. I've not heard nor seen the 942 Brian, is it a "limited run". Did they just fit a 940 cylinder to an alum. gun?

I have a 940 and I have shot the snot out of it with standard, +P and even some +P+. It's a pocket rocket for sure.
 
The 942 as listed in the "Standard Catalog" they made 2 one of which was sent to Wiley Clapp for evaluation. Never a cataloged item nor special order.
Basically a 940 cylinder and barrel fitted to a 642 frame.
 
I wonder how many standard 9mm rounds it would take to strech and break the frame? That's probably why S & W only made 2, but I would like to have one in scandium. That would be the bee's knees.

I've got a 940 and it's sweet. Wilely Clapp really liked these little pocket rockets. I read an article several decades ago where he tested one. With corbon 115+P he got an honest 1247 fps. Pretty impressive.
 
You have what I would consider to be a dream revolver. Pictures please.
It has certainly worked out well for me, it's exactly what I wanted - a 13oz, DAO, 9mm snubby. Too bad S&W or Ruger won't make one, I'd be the first in line.

SDC10022.jpg
SDC10023.jpg
 
Federal 9BPLE 115gr JHP +P+, I've clocked it at almost 1200fps from a 2" revolver. Hot enough but very manageable, much less recoil and muzzle blast than a comparable .357mag.
 
Status
Not open for further replies.
Back
Top