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CHAMBER REAMERS

JGS emailed me reamer prints, and answered questions with little delay. I will probably make an order tomorrow. They close at 2 pm?? I had no idea they closed that early!
 
I'm working with Lynn at JGS right now getting a custom reamer squared away. She's been extremely helpful and has followed up promptly to my emails.
 
JGS is my favorite by far, I took two reamers made of the same print, one from Kiff and one from JGS, put one in each end of a barrel stub to get a look at how they came out. The JGS cut so nice you could hardly see the changes in the throat while the Kiff just cut poor in comparison and it was very obvious the changes in the throat. Then there was the little problem of Kiff missing the neck length by .040 then charging for fixing the problem. I will be Kiff'ed no longer!!!!
 
I can see single point cutting could work with larger calibres but I suspect tool rigidity might be an issue with smaller calibres. I guess very high speeds and ultra light cuts would be in order.
Most CNC machines will go back and recut for flex in boring bar or wear on tooling. At least my buddy's does. Matt
 
Dusty -

Back in 2007 already, Phil Bower set a IBS-1000 record in HV-Gun for Group with a CNC single point cut chamber.
In the industry, I believe all Tikka and Sako chambers are being single point cut as well.

Attaching a picture of a boring-bar used to single-point cut chambers. That particular one will do 243/6mm throats and/or larger.

An innovative future is what foresee....
Donovan
Yep that is who I am talking about. He just made me dies not long ago. That machine threaded and cut them that fast it was unbelievable. Matt
 
Yea you can tell it to take 10 spring cuts if you want to. Make it really smooth. Theyre only as smart as the machinist runnin em
 
Evidently jgs had a machine down and my reamers piled up supposed to ship today 10-12wks from order. But i bet theyll be right when i do finally get em
 
I have never received a bad reamer...I don't know where to try to even think about getting one that is no good. The most accurate rifle I ever owned in my life was chambered with a JGS...the longest lasting reamer I have is made by Clymer...the ones I use the most is Dave Manson.
As to the CNC.....well, it's like this: the CNC machine is anywhere from $10,000.00 to $20,000.00 plus...a reamer is $100.00 to $125.00. Do the math!!! There will be no reamer companies closing down anytime soon fellas!!!
I didn't know the reamers we all use quit working??? It sort of sounds like they maybe never did work right.
I mean, a chamber can only be cut so on size and straight. I don't see the advantage...especially to the point that the gun chambering world is going to defecate down both legs, throw their chamber reamers in the nearest river and take out a mortgage to buy a CNC asap. I also don't see me or anyone else having to run to the nearest guy that claims to do this and have a barrel chambered just to see if it's "better"....
 
Hogpatrol -

One of the setups I've seen is with a Haas T1 using a 6-jaw chuck, in front of True Bore Alignment System. On the carriage, a drill bit, a roughing boring-bar, and the finishing boring bar. Like 10-minutes start to finish from dialing, indexing, to chambered !.!.!
The best surface finish chambers I've ever seen (particularly the throats).
Donovan

Hi dmoran, who would be your recommendation with a website that one could visit and look around?
 
I used JGS for my 6 dasher build.
i got a go gauge from them as well, and i'm living in australia. I had very good service from them and the reamers were as good as pt&g who i used for my 220 AI build.
 

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As to the CNC.....well, it's like this: the CNC machine is anywhere from $10,000.00 to $20,000.00 plus...a reamer is $100.00 to $125.00. Do the math!!! There will be no reamer companies closing down anytime soon fellas!!!

....
You mean $30,000 to $500,0000, don't you?
 
You mean $30,000 to $500,0000, don't you?

Well, yeah...you are correct, you can keep right on getting up with the price of some of those machines. It's always funny when someone posts something ridiculous like this...on another forum anytime there's a post about getting lead out of a barrel 6 idiots will immediately post telling how "easy" it can be done by pouring mercury down the tube, which dissolves lead "in a matter of seconds"....maybe it really does, but who really knows??? It not like you can just run on down to the mercury store and pick up a gallon!! Why bother to post crap like this??? Yeah, okay, I wont bother with Dave Manson next time I need a $100 reamer...no, I think I will order one of those $200,000.00 plus dollar CNC machines..yeah, that'll do it!!! Get real guys, I doubt gun manufacturers chamber enough barrels to justify costs like that.
 
The Haas TL-1 lists for 29,000 + ,,, that's without work (chuck) or tool holding. One might possibly be found on the 'used' market. It'd be no different than buying a used manual lathe, you'd need know what you're looking at. At half the list price you'd have to chamber a lot of barrels for it to be cost effective, even if you already owned a tool box full of reamers. If you'd go the boring bar route, and sell those reamers for whatever you could get for them, is your time spent writing programs free? Are any of the major manufactures chambering with bars? Those machine tools would need to be running 8 hours a day, making something else if not chambering, to justify the cost.
 

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