Most of the companies know nitriding is better. It will take more years for that knowledge to trickle down to consumers. Let's see if there is even one company who submits chrome barrels to the IC competition.
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Most of the companies know nitriding is better. It will take more years for that knowledge to trickle down to consumers. Let's see if there is even one company who submits chrome barrels to the IC competition.
Not sure how you define "bubbas," but when I've seen the term used in a disparaging fashion it usually connotes a ignorant or uninformed individual who acts on personal bias or prejudice rather than reasoned analysis.
Most of the proponents of nitro carburizing who have responded to this thread are engineering types or individuals who have done independent research into the process and are attempting to make an informed decision. Many of the opponents seem to base their opposition on a slavish devotion to a 40+ year old military specification.
This thread has elicited a lot of information on the relative advantages of chrome lining and nitro carburizing. I hope that even the "bubbas" out there will consider the information in this thread, do their own research and make an informed decision, rather than succumbing to the "milspec" bias that seems to permeate the traditional AR crowd.
I agree with your statement, Todd, as there does appear to be a right way to do things. In regards to my barrel that was nitrided, I feel confident with the research that my guy did in speaking to Rock Creek and in utilizing a nitriding company that has experience in nitriding weapon barrels.
The concern for the barrel extension on barrels being sent to be nitrided, is that thermal expansion could cause the extension to loosen according to this thread-
http://www.usrifleteams.com/forums/i...1&#entry156992
If the information in the above is accurate, barrel extensions are made from 4140 steel.
I have found, after some research, some treatment methods are better for barrels than others and temperatures used during application varies with the method
INSIDE PLAN OF BOX
- ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
- MATCH SCRATCHES ON MATCH-BOX
- MATCH LIGHTS FUSE TO TNT
- BOOM!
- HA-HA!!
-WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"
I am American
All one needs to know is the alloy and it's thinnest section. The S&W "Sport" model I looked at today had the barrel extension treated as well. I didn't think to look closely at the LWRCi rifles.
My OPINION is that they are probably low carbon steel - similar to the barrels (not to mention GLOCK & HK slides and barrels) and thus should be fine. The recrystallization temps of 4140, 4340 and 4150 are similar enough and high enough to not be an issue. The vendors have technical staff and they are very much willing to assist as they wish for more business. I have a listing of some who do nitrocarburizing if you're interested. Besides I'd like to get your opinion on a project I'm working on.
"One cannot awaken a man who pretends to be asleep..."
http://blacknitride.com/
they will be doing a few test barrels for me "260, 223" in the next month or so
this is my 243wssm AR, it has a Shilen stainless hand-lapped select-match barrel, that i sent to these guys
http://www.youtube.com/watch?v=jiegZyhd5l0
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Last edited by Ring; 07-10-11 at 00:06.
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