Tilted Forum Project Discussion Community  

Go Back   Tilted Forum Project Discussion Community > Interests > Tilted Weaponry


 
 
LinkBack Thread Tools
Old 06-28-2010, 10:35 AM   #1 (permalink)
WHEEEE! Whee! Whee! WHEEEE!
 
FuglyStick's Avatar
 
Location: Southern Illinois
Chamber pressure

Is chamber pressure a concern when choosing a pistol, or are pistols engineered to withstand, say, for example, 10k rounds without having any adverse wear and tear on components?

According to Wikipedia, these are some of chamber pressures of a handful of popular calibers--

.45ACP----------21000 psi
9mm & .40S&W--35000 psi
10mm-----------37500 psi
.357SIG---------40000 psi

It could be that a person will never fire enough rounds in normal usage for chamber pressure and the related stresses to ever be a concern. Do any of you guys that shoot regularly ever take it into consideration? Would it be a factor in choosing a caliber?
FuglyStick is offline  
Old 06-28-2010, 10:52 AM   #2 (permalink)
Junkie
 
Chamber pressure doesn't start to become a factor in wear on the firearm until;

1: You start loading -way- beyond SAAMI specs, or
2: You start loading beyond SAAMI specs -and- shooting a lot of rounds.

Modern firearms are mostly designed to take full-power standard (up to SAAMI max for caliber) loadings through their entire service life. Most modern weapons, even those not specifically marked for it, can safely use +P loads as well, although +P+ is getting into hedgy territory, especially with smaller/lighter designs or those with partially-supported chambers. The Glock factory has a "torture test" weapon that's been through over 1,000,000 rounds and only needed the bbl replaced a few times.

Now, other oddball stuff -can- cause sudden changes in the pressure curve (the way in which the pressure rises, falls, and then equalizes within the weapon as it's being fired) which -can- destroy a gun. A common example is Glock's 50/50 deserved/undeserved reputation for blowing up when using cast-lead ammo. Exposed lead fouls the Glock's polygonal rifling very quickly, which can lead to a spike in chamber/barrel pressure when the weapon is fired. -Any- weapon will kB! if you foul/obstruct the barrel sufficiently and fire: even though the bullet might make it out of the muzzle, the spike in pressures (especially if that spike occurs too fast for the steel) will destroy the ass-end of the barrel and breech. In my area, it's not uncommon for morons to blow their thumbs off or simply destroy their gun by firing it with the barrel either plugged with thick mud or partially submerged in water.

The only time I'd seriously consider chamber pressures in purchasing a handgun is if I was planning to use that handgun with hot-for-caliber handloads, or some of the -really- serious commercial Elephant Killers (Buffalo Bore, Garrett, Cor-Bon, etc). -Those- bad boys will destroy most handguns: Buffalo Bore and Garrett, in fact, ship their hottest ammo with big red warnings on it cautioning the user to never, ever, under any circumstances whatsoever, fire these rounds in ANYTHING but a Ruger heavy revolver. Colt, S&W, Dan Wesson, etc...all will simply disintegrate. Only the Rugers are heavily-built enough to deal with the pressures these loads generate, which are -far- in excess of SAAMI maximum.
The_Dunedan is offline  
Old 06-28-2010, 11:16 AM   #3 (permalink)
WHEEEE! Whee! Whee! WHEEEE!
 
FuglyStick's Avatar
 
Location: Southern Illinois
Thanks, Dunedan. I was fairly certain that pistols manufactured by quality manufacturers were engineered to withstand a ton of factory rounds without any excessive wear, regardless of caliber; +P rounds I wasn't sure about. And, of course, hopped-up hand loads are another thing altogether.
FuglyStick is offline  
Old 06-29-2010, 06:36 AM   #4 (permalink)
I'm calmer than you are, dude
 
Walt's Avatar
 
Location: North Carolina
Quote:
Originally Posted by The_Dunedan View Post
1: You start loading -way- beyond SAAMI specs, or
2: You start loading beyond SAAMI specs -and- shooting a lot of rounds.
Meh. SAAMI specs are more of guideline than a rule.
__________________
Calmer than you are...
Walt is offline  
Old 07-07-2010, 08:41 PM   #5 (permalink)
Warrior Smith
 
Fire's Avatar
 
Location: missouri
say that again after you see a gun go kaboom on someone......
__________________
Thought the harder, Heart the bolder,
Mood the more as our might lessens
Fire is offline  
Old 07-08-2010, 12:55 PM   #6 (permalink)
Addict
 
Shadowex3's Avatar
 
Location: Florida
Quote:
Originally Posted by Fire View Post
say that again after you see a gun go kaboom on someone......
Does kB in the second post actually mean kaboom like i think it does? Forgive the noob questions but I'm trying to learn some of the stuff and trying to google anything 3 letters or less is not always a good idea.
__________________
Quote:
Originally Posted by Hectonkhyres
I'm imagining crazed dwarves doing profoundly weird things. Urist McNutcase has developed a compulsion to jam anything colored blue up his anus, or alternately other peoples anuses
Shadowex3 is offline  
Old 07-08-2010, 01:19 PM   #7 (permalink)
Junkie
 
Yah. kB! is gunnutese for kaBOOM!
The_Dunedan is offline  
 

Tags
chamber, pressure


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 01:42 AM.

Tilted Forum Project

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
© 2002-2012 Tilted Forum Project

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54