Firearm & Gun Forum - FireArmsTalk.com > Gear & Accessories > Ammunition & Reloading > 357 sig vs. .40 S&W

Reply
 
LinkBack Thread Tools Display Modes
Old 05-13-2010, 03:18 AM   #1
Feedback Score: 0 reviews
 
Gordo323's Avatar
 
Join Date: Sep 2009
Location: Sometimes in,Utah
Posts: 1,086
Default 357 sig vs. .40 S&W

Didn't know where to go to post this question, so here it is as I reload both calibers:
I have 3 Sig P-226s two in .40 and 1 in .357 sig, I have 15 magazines which all accept .357 or .40 and all fit in every gun.
I'm sure a .40S&W would not chamber into a .357 sig, but would it work the other way around ? And what kind of bad things would happen?
Just curious if anyone has made this mistake!



__________________

I swear, by my life and my love of it, that I will never live for the sake of another man, nor ask another man to live for mine.
-Ayn Rand

Gordo323 is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 05-13-2010, 04:24 AM   #2
Feedback Score: 0 reviews
 
palabman's Avatar
 
Join Date: Mar 2010
Location: Industry,PA
Posts: 11
Likes Given: 1

Default

I'm sure that the case would split at the neck and your accuracy would be terrible. Probably sound kinda funky, but I'm not sure it would damage the gun.



__________________
palabman is offline  
 
Reply With Quote
Old 05-13-2010, 04:55 AM   #3
Feedback Score: 0 reviews
 
Tackleberry1's Avatar
 
Join Date: Feb 2010
Location: Vancouver,WA
Posts: 5,266
Liked 3698 Times on 1821 Posts
Likes Given: 1004

Default

My son once mistakenly loaded a .45 ACP mag w/.40 S&W, loaded it into my Colt 1991 A1, and pulled the trigger.

Made a funny noise, like the shot was muffled and split the case leaving it stuck in the chamber. Had to tap it out w/a cleaning rod.

Did not hurt the gun but I can't say the same for his pride.

I think your hypothetical would have a similar rusult.

__________________
Tackleberry1 is offline  
 
Reply With Quote
Old 05-13-2010, 02:16 PM   #4
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
robocop10mm's Avatar
 
Join Date: Jul 2007
Location: Austin,Texas, by God!!
Posts: 9,581
Liked 2260 Times on 1187 Posts
Likes Given: 155

Default

Because the bullet would not attain a good seal inthe barrel, most of the pressure would be directed past the bullet. The case neck would expand in an attempt to fill the vacant space and may split.

You would not have dangerous pressures by any stretch of the imagination. You would likely have a fail to extract, but otherwise would not be "dangerous".

__________________

In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball

robocop10mm is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes