Register
Log In
Home
February 11, 2010
Offline
RUT said:
Like the original barrel, this too has a bit of a "frosted" apperarance to it.
Can you get a pic of that ? I'd like to see what "frosted" means.
-Blacktop
October 19, 2010
Offline
>>Can you get a pic of that ? I'd like to see what "frosted" means.<<
Sorry, no can do. "Frosted" means just what it sounds like.... not smooth & shiny like a bore should be. (especially a new one)
October 13, 2009
Offline
I'm reading RUT! 
Maybe the barrel is been ECM'd...I believe S&W is making their barrels that way now. That would make sense with the frosted appearance.
There are no tool marks at all in the rifling/bore? Just all frosting for the entire length?
Eric
October 19, 2010
Offline
>>There are no tool marks at all in the rifling/bore? Just all frosting for the entire length?<<
Yeah, pretty much. So, what's "ECM'd", pray tell?
June 5, 2008
Offline
That's what I was thinking, ECM will not have the knife edge to the edges of lands and will look rounded somewhat. From what I have read this rivals the polygonal rifling used now for years by European manufactures for greater accuracy, such as Glock pistols and Anschutz rifles for example.
If that's true, I sure wished my 22LR would be tossed and they me give one of these because they work great for not leading up so fast and easier to get it out when it does. Shot a lot of lead in polygonal barrels, rifles and Glocks an they were accurate and easy to clean.
Revolvers
New Model M-715 Pistol Pack
1911's
Bob Tail RZ 10mm - Bob Tail RZ 38 Super by Keith @ DW - DW 38 Super Guardian
February 11, 2010
Offline
RUT said:
Yeah, pretty much. So, what's "ECM'd", pray tell?
ECM is electro chemical machining. Can be ECR too. Here's a link with info
http://www.extrudehone.com/media/files/ECRifling_001sc.pdf
Wonder if DW/CZ is using this...
-Blacktop
DWF Supporters
Dans Club
Moderators
November 17, 2008
Offline
ECM sounds interesting, and may be all well and good but the true indicater will be how does the barrel shoot. I personally don't care how the barrel is produced if it holds up and shoots straight. We need a range report. 
Run it through the paces and see if it shoots true or not and maybe compare it to an older barrel. All of that is up to you of course but it could prove interesting to compare the two.
LB
Wisdom is merely the realization of how little one knows, therefore I am wise.
October 19, 2010
Offline
Well, I suspect it'll shoot just fine, but after some 45 years of seeing totally shiny bores (with a couple of C&R exceptions) it's hard for me to grasp one that's less than perfect.
The USMC also engrained the perfectly cleaned bore into me as well.
And thanks to B.T. for the primer on ECM. You learn something every day. Not sure if DW is using this process, but perhaps somebody does.
===RUT===
February 11, 2010
Offline
RUT said:
Well, I suspect it'll shoot just fine, but after some 45 years of seeing totally shiny bores (with a couple of C&R exceptions) it's hard for me to grasp one that's less than perfect.
I know the feeling ! Took me 15 years to finally accept the matte finish and plastic
on all the guns you see today.
-Blacktop
May 17, 2010
Offline
ummm I still dont like the plastic... mat is ok.
Soap Box, Ballot Box, Ammo Box
in that order.
4 Monson Model 15's
1 Palmer FB 15
1 Rossi 357 Model 92 (lever)
1 CZ 75B
October 13, 2009
Offline
Yes, thanks Backtop for posting the Kennametal/Extrude Hone ECM info! Good info that explains the process.
There are upsides and downsides to every single rifling process. I think the ECM barrels would work fine, but don't have any first hand experience in shooting them.
I would be extremely interested in what CZ is doing for barrels…if they make them in house and if so the process, or if they use barrel blanks.
FWIW, the original DW monson barrels were broached (cut) The Dan Wesson rifling machine is now at Savage if I recall correctly.
Eric
2 Guest(s)
