|
Forum Rules | Firearms Safety | Firearms Photos | Links | Library | Lost Password | Email Changes |
Register | FAQ | Calendar | Search | Today's Posts | Mark Forums Read |
|
Thread Tools | Search this Thread |
September 9, 2014, 04:54 PM | #1 |
Junior Member
Join Date: October 27, 2012
Posts: 2
|
Will this groove from my Walther cause reloading issues?
Purchased a Walther PPQ M2 5" in 9MM because it just was calling me.
Anyway after firing it the first time I used an ammo nut wizard to collect my brass, never paid any attention to its condition. The second time I forgot the ammo nut wizard and collected the brass by hand and noticed a ring around the casing just behind where the bullet would seat. Upon inspecting the barrel in the cartridge chamber it is machined and at the same area where the ring shows up on the casing is a step in the chamber. I know this does not effect anything but is it ruining my brass for reloading? Here is a picture, the one on the left is as it was ejected the one on the right is after resizing and depriming. In my mind this ring is like taking a tubing cutter and running it around the case. With the projectile being crimped to the case this area is the weakest link and could tear and try to stay with the projectile. Last edited by Brian Pfleuger; September 9, 2014 at 05:20 PM. Reason: corrected photo link |
September 9, 2014, 05:20 PM | #2 |
Senior Member
Join Date: September 8, 2007
Location: DFW, Texas
Posts: 2,475
|
Attaching pics is done easiest by hosting them on photobucket or similar site and then using the link from the site to post the pics on this one.
__________________
"Laws that forbid the carrying of arms...disarm only those who are neither inclined nor determined to commit crimes...Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man." - Thomas Jefferson, 1776 |
September 9, 2014, 05:20 PM | #3 |
Moderator Emeritus
Join Date: June 25, 2008
Location: Austin, CO
Posts: 19,578
|
Won't hurt a thing.
__________________
Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley |
September 9, 2014, 05:36 PM | #4 |
Senior Member
Join Date: March 21, 2013
Location: Idaho
Posts: 5,511
|
I'm going with Brian on this one.
Load away. Brass is soft and this is of little concern.
__________________
Gun control laws benefit only criminals and politicians - but then, I repeat myself. Life Member, National Rifle Association |
September 9, 2014, 07:27 PM | #5 |
Junior Member
Join Date: October 27, 2012
Posts: 2
|
Thanks, I'll prep them for reloading but will keep them seperate to use in the Walther just to see what happens.
|
September 10, 2014, 03:08 PM | #6 |
Senior Member
Join Date: February 19, 2013
Location: Atlanta, Ga
Posts: 329
|
I don't know why they do it, but different brands put a ring around the case. It has no effect on your workmanship.
__________________
non ministrari sed ministrare |
September 10, 2014, 03:35 PM | #7 | |
Moderator Emeritus
Join Date: June 25, 2008
Location: Austin, CO
Posts: 19,578
|
Quote:
__________________
Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley |
|
September 10, 2014, 06:31 PM | #8 |
Senior Member
Join Date: February 19, 2013
Location: Atlanta, Ga
Posts: 329
|
I can always count on a lesson when you answer a post Brian. Thank you for the education.
__________________
non ministrari sed ministrare |
September 10, 2014, 07:03 PM | #9 |
Moderator Emeritus
Join Date: June 25, 2008
Location: Austin, CO
Posts: 19,578
|
You shouldn't say that... I was wrong.
I had this inkling that I wasn't remembering that quite right so I looked it up when I got a few minutes.... The purpose is to aid in a complete seal around the brass. It's called a Stepped Chamber.
__________________
Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley |
September 10, 2014, 07:05 PM | #10 | |
Senior Member
Join Date: January 5, 2009
Location: Just off Route 66
Posts: 5,067
|
Quote:
Jim
__________________
Si vis pacem, para bellum |
|
September 10, 2014, 07:44 PM | #11 |
Member In Memoriam
Join Date: March 17, 1999
Posts: 24,383
|
The stepped chamber has nothing to do with headspace. It was part of the initial design of the 9mm Luger pistol. Georg Luger believed that it gave better obturation (sealing of the chamber) and all Lugers into WWII had it. Given all the pistols and SMGs (including Walthers) that do not have it, one can hardly argue that it is necessary, but guns that have it seem to show less soot on the brass and stay cleaner, so Herr Luger apparently had something.
Jim |
Thread Tools | Search this Thread |
|
|