9 mm and 40 cal glock question - The Firearms Forum

darkwolf210 · 12-09-2010, 01:25 AM

Hello all, I own a glock 17 9mm police trade in, and a glock 27 .40 caliber subcompact gun. I have a few questions if anyone can help...

1. I fired both the 9mm and the .40 cal, 100 rounds through each and when cleaning them, the 9mm had little to no debris or dirt or anything it looked almost fresh, opposed to the .40 cal which was very dirty. Is this due to the length of the barrel or the size of the rounds im shooting?

2. When do you need to replace a barrel on a handgun? Should you have one on the side that you take to the range and one thats fresh for the fight (would anyone know how that works too? I just call glock and pay for it?)?

Thats it! Thanks guys

johnlives4christ · 12-09-2010, 01:40 AM

the size of the rounds doesnt really affect how dirty the gun gets from shooting. a shorter barreled gun will get dirtier faster because more of the powder is still burning when the bullet is leaving the barrel

the type of powder used in the bullet though makes a big difference. some burn cleaner then others.

only powder type should influence how dirty the inside of the gun is though given all other factors are the same.

oscarmayer · 12-09-2010, 04:05 AM

john is correct the shorter barrel does not allow for all the powder to burn up thus leaving some semi burned powder behind. check around i know they make ammo designed for short barrelled guns in 9mm so i assume they make it in 40 s&w too. these rounds are designed to be quicker burning/igniting. as for the barrel replacment . depending on what you're shooting thru the barrel it should out live you in 99.9% of the cases.

darkwolf210 · 12-09-2010, 02:33 PM

Thank you very much

old semperfi · 12-09-2010, 06:54 PM

guys,i dont agree,a short barrel will not or should not leave more unburned powder in the barell it will leave unburned powder outside the barrell.once ignition is started it will burn until it either has no more oxygen or it reaches the end of the barrell,thats why you have more muzzle flash in a short gun than a long one,think about it.............old semperfi

johnlives4christ · 12-09-2010, 08:45 PM

thats what i meant to say old semperfi. a short barrel makes the end of the gun dirtier. not the inside.

glocknut · 12-10-2010, 02:26 PM

Quote:

Originally Posted by johnlives4christ

thats what i meant to say old semperfi. a short barrel makes the end of the gun dirtier. not the inside.

There's a joke in that somewhere but i am too darn lazy at the moment to figure it out....

mike
gn

BobMcG · 12-10-2010, 09:12 PM

Quote:

Originally Posted by darkwolf210

I fired both the 9mm and the .40 cal, 100 rounds through each and when cleaning them, the 9mm had little to no debris or dirt or anything it looked almost fresh, opposed to the .40 cal which was very dirty. Is this due to the length of the barrel or the size of the rounds im shooting?

What ammo was used in each? Due to the powder used, some ammo burns quite clean while others burn rather "dirty".

12-09-2010, 01:25 AM	#1
darkwolf210 Member Join Date: Oct 2010 Posts: 12	9 mm and 40 cal glock question Hello all, I own a glock 17 9mm police trade in, and a glock 27 .40 caliber subcompact gun. I have a few questions if anyone can help... 1. I fired both the 9mm and the .40 cal, 100 rounds through each and when cleaning them, the 9mm had little to no debris or dirt or anything it looked almost fresh, opposed to the .40 cal which was very dirty. Is this due to the length of the barrel or the size of the rounds im shooting? 2. When do you need to replace a barrel on a handgun? Should you have one on the side that you take to the range and one thats fresh for the fight (would anyone know how that works too? I just call glock and pay for it?)? Thats it! Thanks guys -->

12-09-2010, 01:40 AM	#2
johnlives4christ Former Guest Join Date: Apr 2008 Location: Kentucky Posts: 3,828	Re: 9 mm and 40 cal glock question the size of the rounds doesnt really affect how dirty the gun gets from shooting. a shorter barreled gun will get dirtier faster because more of the powder is still burning when the bullet is leaving the barrel the type of powder used in the bullet though makes a big difference. some burn cleaner then others. only powder type should influence how dirty the inside of the gun is though given all other factors are the same.

12-09-2010, 04:05 AM	#3
oscarmayer Advanced Senior Member Join Date: Jun 2008 Contributor Posts: 2,387	Re: 9 mm and 40 cal glock question john is correct the shorter barrel does not allow for all the powder to burn up thus leaving some semi burned powder behind. check around i know they make ammo designed for short barrelled guns in 9mm so i assume they make it in 40 s&w too. these rounds are designed to be quicker burning/igniting. as for the barrel replacment . depending on what you're shooting thru the barrel it should out live you in 99.9% of the cases.

12-09-2010, 02:33 PM	#4
darkwolf210 Member Join Date: Oct 2010 Posts: 12	Re: 9 mm and 40 cal glock question Thank you very much

12-09-2010, 06:54 PM	#5
old semperfi Advanced Senior Member Join Date: Aug 2009 Location: i live in southern indiana,old country boy at heart Posts: 1,506	Re: 9 mm and 40 cal glock question guys,i dont agree,a short barrel will not or should not leave more unburned powder in the barell it will leave unburned powder outside the barrell.once ignition is started it will burn until it either has no more oxygen or it reaches the end of the barrell,thats why you have more muzzle flash in a short gun than a long one,think about it.............old semperfi

12-09-2010, 08:45 PM	#6
johnlives4christ Former Guest Join Date: Apr 2008 Location: Kentucky Posts: 3,828	Re: 9 mm and 40 cal glock question thats what i meant to say old semperfi. a short barrel makes the end of the gun dirtier. not the inside.