Sounds like a good process for wear and corrosion resistance. Would my thinking be correct in that folks with barrels that are not chrome lined, would be able to have this process performed after the fact or is this part of the manufacturing prior to the barrels being shipped to be used in parts of upper receiver builds?
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Chrome VS Nitride barrels
The 5.56 Recon polygonal barrels will be here in a month so what do you guys think Chrome or Nitride? These barrels are lapped to a match finish and should be very accurate right off the machine. Chrome is corrosion resistant but may not be as accurate. Nitride makes the barrel apx 70 Rockwell, to hard to cut with anything but is not as resistant as chrome.
Edited- after researching and talking to the company that performs this process it seems that both the inside and outside of the barrels are more resistant to the salt spray test than are chrome-lined barrels.
Edited- after researching and talking to the company that performs this process it seems that both the inside and outside of the barrels are more resistant to the salt spray test than are chrome-lined barrels.
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I only have limited experience with nitride coatings but from what I have seen so far the nitride coatings are amazingly tuff !
I would go for the Nitride.
I would go for the Nitride.
I'm saving up for a 6.8 upper and am leaning towards a Recon and would be SOLD on it as soon as I'm able if it had the nitro carburizing.
Chome lining is good, but technology has surpassed it. It seems to me that nitro carburizing surpasses chrome lining in the bore and also excels as an exterior treatment; what's not to like?
Another "vote" YES for offering the nitro carburizing.
Chome lining is good, but technology has surpassed it. It seems to me that nitro carburizing surpasses chrome lining in the bore and also excels as an exterior treatment; what's not to like?
Another "vote" YES for offering the nitro carburizing.
You could have it done after the fact but, you would have to pay a full batch fee. 1 barrel or 50 would be the same time occupying the oven.Sounds like a good process for wear and corrosion resistance. Would my thinking be correct in that folks with barrels that are not chrome lined, would be able to have this process performed after the fact or is this part of the manufacturing prior to the barrels being shipped to be used in parts of upper receiver builds?
Just checking to see if any additional information has been discovered about the possibility of nitrided 6.8 barrels and, if so, when they would be available.
Thanks!
Thanks!
Yep, not sure how long it will take yet maybe a month.
We are just going to call them 6.8 XT/ NC for nitro carburized or "Not chrome" LOL
We are just going to call them 6.8 XT/ NC for nitro carburized or "Not chrome" LOL
In the mean time, just post a few more pics of your property!Yep, not sure how long it will take yet maybe a month.
We are just going to call them 6.8 XT/ NC for nitro carburized or "Not chrome" LOL
The reasons we started looking at the Nitiriding process were for a number of factors: As has been said CL if done properly should not have a negative effect on performance. My SAKO TRG-22 as with all TRGS(now a $4 + rifle) uses a CL CM barrel and it will shoot .25 MOA groups with regularity. Not just at 100 yards either. But the key is done properly. We take a number of extra steps to ensure this with our barrels. I will not go into these as some of them are processes we developed and do make a sig difference IMO. But these steps are time consuming. Nitriding which is a form of case hardening from all the research we have done offers the same longevity and protect of Chrome and becasue of the way the process works it would eliminate a number of the extra steps we now do to ensure the CL meets our standards. The other thing is unlike CL when you nitride a barrel you are doing the entire barrel. The inside as well as the outside. Obviously parkerizing is a very tough finish and has been used forever. It also is time consuming to apply as it is a entirely separate operation. After looking at the consistency of parkerizing done at high volume facilities we choose to parkerize in-house to ensure a more even and dark finish. Nitirtiding not only eliminates this step but the finish ends up being more durable and is still the same shade range of black color as the Park we were doing.
So from a durability standpoint I think no matter if Ntiridng is a bit tougher or the same as CL both are plenty tough and as with most AR barrels your gas port will erode far sooner than your barrel bore. From a consistency standpoint it does not seem to take the number of steps we are now employing to ensure our quality and consistency standards are met. As a number of these steps are done in house by use personal this is a time saver for us. This allows us to spend more time on other parts of building the uppers. As it does the outside of the barrel also it saves that entire process and offers a stronger finish as well.
Based on these things it offers us a number of benifits as the manufacturer.
Offers the customer at least the same durability and longevity of the barrels performance.
Offers a more durable outer finish.
There are a couple extra steps that we have research and tested with nitrided barrels that we will be doing as well that others that use this method that we have checked do not do. This is smlair to certian extra steps we did with the CL barrels in end result.
So from a durability standpoint I think no matter if Ntiridng is a bit tougher or the same as CL both are plenty tough and as with most AR barrels your gas port will erode far sooner than your barrel bore. From a consistency standpoint it does not seem to take the number of steps we are now employing to ensure our quality and consistency standards are met. As a number of these steps are done in house by use personal this is a time saver for us. This allows us to spend more time on other parts of building the uppers. As it does the outside of the barrel also it saves that entire process and offers a stronger finish as well.
Based on these things it offers us a number of benifits as the manufacturer.
Offers the customer at least the same durability and longevity of the barrels performance.
Offers a more durable outer finish.
There are a couple extra steps that we have research and tested with nitrided barrels that we will be doing as well that others that use this method that we have checked do not do. This is smlair to certian extra steps we did with the CL barrels in end result.
Tim made a statement about erosion of the gas port and that raises a couple of questions because Harrison said the finish is so tough that diamond bits are the only thing that will cut it.
The question is will the gas ports be drilled before or after the NC process? Could the ports be drilled before the process and thus reduce or eliminate the erosion?
The question is will the gas ports be drilled before or after the NC process? Could the ports be drilled before the process and thus reduce or eliminate the erosion?
So are the Xtreme barrels going to get it or is it the MK68 barrels or both?
I have a batch of XTs on the road now, I need to test a few that have been NCd to make sure they will be accurate after the process. I am pretty sure they will be but I want to shoot a few to make sure. If I can get more polys in the next year then I'll treat those too but I still have about 40 chrome-lined I can build with.So are the Xtreme barrels going to get it or is it the MK68 barrels or both?
I am working with Douglas and Krieger to produce the SAM-R, Varmint and Highpower match rifle barrels, we will be able to offer more contours after the new CNCs come in.
So many options not enough reason to build new rifles
I am thinking about getting one of your 556 ARP uppers though, not that I need it I can barely stretch the legs of the ones I have now
I am thinking about getting one of your 556 ARP uppers though, not that I need it I can barely stretch the legs of the ones I have now
I think they will have to be final profiled, gas port drilled, etc. before nitriding.Tim made a statement about erosion of the gas port and that raises a couple of questions because Harrison said the finish is so tough that diamond bits are the only thing that will cut it.
The question is will the gas ports be drilled before or after the NC process? Could the ports be drilled before the process and thus reduce or eliminate the erosion?
WHat happened to Pac-Nor?I have a batch of XTs on the road now, I need to test a few that have been NCd to make sure they will be accurate after the process. I am pretty sure they will be but I want to shoot a few to make sure. If I can get more polys in the next year then I'll treat those too but I still have about 40 chrome-lined I can build with.
I am working with Douglas and Krieger to produce the SAM-R, Varmint and Highpower match rifle barrels, we will be able to offer more contours after the new CNCs come in.
The ports will need to be drilled before.
Nothing really but my trade secrets seem to have a way of leaking over there and they can't produce enough barrels fast enough. I'll still use the 12 x3 but I have new stuff in the works in 5.56, 6mm and 6.8. Douglas has 10 machines and can fill orders about 4 times faster. I want to be able to produce super accurate highpower and varmint rifles faster than I have been able to in the past.
Nothing really but my trade secrets seem to have a way of leaking over there and they can't produce enough barrels fast enough. I'll still use the 12 x3 but I have new stuff in the works in 5.56, 6mm and 6.8. Douglas has 10 machines and can fill orders about 4 times faster. I want to be able to produce super accurate highpower and varmint rifles faster than I have been able to in the past.
How thick is the coating, and isn't it a textured coating? Or are there different types of coatings that can be used?
I though Nitro Carburization was a surface conversion not a coating. I could be wrong though....
I was under the impression is was like Remington's Trinyte finish, so your probably correct, makes more sense that way...!I though Nitro Carburization was a surface conversion not a coating. I could be wrong though....
Nein, Nitro Carburizing is a surface conversion that basically impregnates nitrogen in the spaces between the alloy molecules. There is a alight dimension change (on the tune of a few hundres thousandths or a bit more), and it makes the surface hardness about 70 HRC.
H, it's kind of depressing Pac-Nor can't keep up (or control their secrets gasket). I kind of like the slightly tight bore on those, I've yet to fully break in my barrel and it's been printing less than .5" from shot one (or shot two really).
H, it's kind of depressing Pac-Nor can't keep up (or control their secrets gasket). I kind of like the slightly tight bore on those, I've yet to fully break in my barrel and it's been printing less than .5" from shot one (or shot two really).
21 - 40 of 56 Posts
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