Bad bore tool?

[LVSteve]

Was cleaning up a recently acquired pistol when I noticed that the lands had either a very stubborn deposit or damage. Broke out the digital camera and found what you see below. By the way the pattern repeats on the lands, it looks like the factory needed to change a tool when this barrel was made. What say you?

 

[StrawHat]

Since you asked, let me ask this, how does it shoot?

The reason I ask, I shot my way onto the winners podium with a PPC revolver that had two rings in the barrel. The fellow selling it told everyone and they were scared to buy it. He was in the Governor's 10. I had a hunch it could shoot.

Kevin

 

[rockquarry]

Chatter marks; I had a pre-'64 Model 70 Featherweight .30-06 that looked similar, but it was reasonably accurate. I'd put at least a hundred rounds through your gun, enough of them fired from a sturdy benchrest at 25 yards. If it's accurate at that distance, you may not want to do anything to it.

 

[LVSteve]

Haven't shot it yet. Clean and lube routine before I hit the range. Thought I was seeing the usual thing of somebody selling a dirty gun when I bought it. Got it stupid cheap so, meh.

 

[mckenney99]

LVSteve, I had a very similar experience with a brand new CSX that I bought. Pistol had obviously been test fired and the bore was filthy when I bought it, so I was unable to see the faulty bore. I discovered the "threaded" bore when I attempted to clean the bore after I got home & I couldn't even get a proper sized jag and solvent soaked patch to go through the bore. I was absolutely shocked to see such an obviously out of spec barrel could have possibly gotten out of the factory. I had to send the brand new pistol back to S&W before I ever fired a single round through it. My return happened during their annual shut down, so they had the pistol for 8 weeks almost on the nose, just to stick a new barrel in it. God only knows what pressures were generated when a bullet tried to pass down that horrible bore.
My thread is here:CSX Barrel Issue? UPDATE 9-6-23

 

[LVSteve]

Since you asked, let me ask this, how does it shoot?

The reason I ask, I shot my way onto the winners podium with a PPC revolver that had two rings in the barrel. The fellow selling it told everyone and they were scared to buy it. He was in the Governor's 10. I had a hunch it could shoot.

Kevin

I have a suspicion that those chatter marks would have little or no effect on accuracy. The marks look the same on all the lands, so the bullet will see similar forces from each land. Apart from picking more fouling, the marks will not do much.

 

[steelslaver]

fire lap it

 

[Alk8944]

You didn't say what brand the gun is! S&W rifles most barrels by EDM or ECM, electricity doesn't chatter. Those look like reamer marks, not chatter of the rifling tool.

 

[LVSteve]

You didn't say what brand the gun is! S&W rifles most barrels by EDM or ECM, electricity doesn't chatter. Those look like reamer marks, not chatter of the rifling tool.

It's not an S&W, it is a SCCY made last year. It looks to me like the tool that made the initial bore prior to the rifling process was not doing well. I have no complaints about the rest of the gun and the way it is built and finished.

The finish on several recent S&W models has raised questions. It is not a shiny finish by any means. The bore of most M&P 9s and our EZ380 are great examples, but they still shoot OK, so I don't care.

 

[Greyman50]

Worn out tooling. Obviously not hammer forged. " Deep hole" drill or some design of boring bar that is/was not carbide or titanium coat. Regardless machining such as this seems to be the norm these days. Inexperienced machine operators and " blind" or uncaring QC people and " directions" from management to use whatever to save $$$$.

 

[stansdds]

SCCY, isn't that the Yugo of the current centerfire pistol world? I would not expect a tremendous amount of attention to machining marks on a firearm in this price range.

 

[2152hq]

The marks appear to be just in front of the chamber,,is that correct?

If they are I would guess they were put there during the chamber reaming process done after the rifling process.

The chambering reamer has a 'pilot' that rides on the Lands of the rifling.
If the pilot is slightly oversize, is already chewed up from poor maint and care,, poor lube used during the chambering process,,'swarf' clinging to the reamer and pilot when it's run into the bbl causing galling.
It shows up on the Lands as they are what the pilot rides on.

The grooves are free from contact.

The rifling was likely done by the Button Rifling process so any indication of rifling marks in the lands or grooves should be lengthwise. If done right by that method both would be very smooth and any marks hard to see.

Production work is just that and many times tooling is used that should have been discarded previously. Plus operations are performed for speed and not necessarily for pride of craftsmanship.
Automated machinery just keeps turning the pieces out till someone actually stops the process and checks the parts and tooling for quality.

 

[mtgianni]

I would run 200-250 jacketed bullets through it and see what it looks like. If minimal improvement, I would fire lap it.

The barrel could be returned but the next one might be worse.

 

[mckenney99]

LVSteve,
Contact SCCY. When I was running a gun shop, I always found their customer service to be very good. I'd bet they will take care of it quickly.

 

[STORMINORMAN]

LVSteve,
Contact SCCY. When I was running a gun shop, I always found their customer service to be very good. I'd bet they will take care of it quickly.

I would opine that after seeing that image they would just send you a new barrel: in my experience their products are accurate, reliable and their Customer Service is among the best in the industry. No "8 weeks" wait?

Please let us know what the eventual outcome is.

Cheers!

 

[rockquarry]

I would opine that after seeing that image they would just send you a new barrel: in my experience their products are accurate, reliable and their Customer Service is among the best in the industry. No "8 weeks" wait?

Please let us know what the eventual outcome is.

Cheers!

I need to get out more. I've never heard of SCCY. Generally good guns or just cheap guns?

 

[CH4]

Tool chatter. Not changing the cutter when needed. May not effect accuracy, but likely to cause increased fouling.

 

[Protocall_Design]

Those marks are from the gun drill that made the initial hole before rifling. The drill was worn or damaged. The rifling makes the larger diameter that is the size of the bullet. Lapping the barrel would clean that up nicely, but it would be easier if they would just replace the barrel.

 

[LVSteve]

I need to get out more. I've never heard of SCCY. Generally good guns or just cheap guns?

This particular model, the CPX-2TT, is a modern take on the KelTec P-11 design. It is a true, DAO action with no pre-cocking at all. Think Sig P250. I just consider them a 10+1 square DAO revolver in 9mm. They are stupid simple and thus low cost. The grip frame is polymer, and the slide contains just the firing pin with its return spring and the extractor. The guts in the frame are carried on a metal chassis.

They are reviled by many semi-auto shooters for the long, DAO trigger with no fast reset. You see comments like, "How can they call this a semi-auto with this trigger?" You can get trigger kits for them if you are keen, giving a 5 to 6 lb pull compared with the standard 8-9 lb trigger. I had no trouble at 7 yards with the one belonging to a friend, and my model is newer and feels more ergonomic. I'm not seeing anything untoward dry firing.

 

[STORMINORMAN]

I need to get out more. I've never heard of SCCY. Generally good guns or just cheap guns?

Check them out on Handgun Hero: the DVG-1 is striker fired and compares (IMHO, anyway?) with many much more expen$ive 10+1 Compact 9mms out there... Their Warranty Policy is unmatched!

The CPX Series are really just a DAO trigger: S/B no real problem for those familiar with revolvers.

Some come standard with as many as three magazines.

Cheers!

P.S. The only SCCY I ever spent more than $200 for came with a. RIKON Red Dot.