M+M "features" wtf?

[Hitzy]

Not quite what they said...

What about this part?
Which will give me a longer barrel life?

Assuming both are 4150 steels and shot semi-auto (even spirited semi auto), we have found both have very similar round counts before we see degradation of accuracy. If firing cyclic full-auto fire through extreme duty cycles, chrome will have an advantage.

Or do you somehow think neither of those statements directly relate to high heat and hard use?

 

[Ar180shooter]

Faxon says chrome is better for high heat/high rate of fire, I dunno, it's been around long enough the worlds militaries would have adopted it if it was better then chrone lining, it's cheaper for sure.
IMO anyway I'd take chrome over nitride for anything hard use or seeing corrosive ammo.
http://faxonfirearms.com/blog/frequenty-asked-questions-nitride-vs-chrome-lined/

Switzerland with the Sig 550.

 

[Shin_Gunto]

What about this part?
Which will give me a longer barrel life?

Assuming both are 4150 steels and shot semi-auto (even spirited semi auto), we have found both have very similar round counts before we see degradation of accuracy. If firing cyclic full-auto fire through extreme duty cycles, chrome will have an advantage.

Or do you somehow think neither of those statements directly relate to high heat and hard use?

 

[Ar180shooter]

What about this part?
Which will give me a longer barrel life?

Assuming both are 4150 steels and shot semi-auto (even spirited semi auto), we have found both have very similar round counts before we see degradation of accuracy. If firing cyclic full-auto fire through extreme duty cycles, chrome will have an advantage.

Or do you somehow think neither of those statements directly relate to high heat and hard use?

They did say Nitriding was better for corrosion resistance. The part you quoted also says barrel life is equivalent...

 

[Paul_1982]

What about this part?
Which will give me a longer barrel life?

Assuming both are 4150 steels and shot semi-auto (even spirited semi auto), we have found both have very similar round counts before we see degradation of accuracy. If firing cyclic full-auto fire through extreme duty cycles, chrome will have an advantage.

Or do you somehow think neither of those statements directly relate to high heat and hard use?

So you are getting full-auto military rifles for extreme duty cycles? That's the ONLY place where chrome wins.

 

[Hitzy]

So you are getting full-auto military rifles for extreme duty cycles? That's the ONLY place where chrome wins.

Yeah, so it's better for high heat, high rate of fire hard use. Makes me feel better should that ever be necessary lol.

 

[Paul_1982]

Yeah, so it's better for high heat, high rate of fire hard use. Makes me feel better should that ever be necessary lol.

For almost all shooters, Nitride is ideal

It's also more accurate. Your choice.

 

[Hitzy]

It's also more accurate. Your choice.

Accuracy is kind of a moot point in 7.62x39

 

[Hitzy]

Switzerland with the Sig 550.

Swiss makes sense, they are marksmen primarily so accuracy would be a priority. Colt Canada seems to be able to produce sub-moa chrome lined barrels easy enough though, but I guess a lot of R&D went into that they don't want to share with anyone...
What I don't get is why all the poor ass countries are not nitriding vs chrome lining if it's actually "better".... I mean it's cheaper to produce, and they are poor, why stick with chrome?

***Found an old US study on nitride vs chrome, good read
http://www.dtic.mil/cgi-bin/GetTRDoc?AD=AD0500112

 

[Paul_1982]

https://www.shootingillustrated.com/articles/2015/8/26/finishing-touches/

 

[cr5]

Accuracy is kind of a moot point in 7.62x39

Fully agree but it is a harder and more corrosion resistant surface treatment so I'm glad to see that they went that way rather than just following along with chrome and whatever coating for the rest of the rifle.

Swiss makes sense, they are marksmen primarily so accuracy would be a priority. Colt Canada seems to be able to produce sub-moa chrome lined barrels easy enough though, but I guess a lot of R&D went into that they don't want to share with anyone...
What I don't get is why all the poor ass countries are not nitriding vs chrome lining if it's actually "better".... I mean it's cheaper to produce, and they are poor, why stick with chrome?

***Found an old US study on nitride vs chrome, good read
http://www.dtic.mil/cgi-bin/GetTRDoc?AD=AD0500112

Colt has huge contracts for barrels that are chrome lined, whether it's better or not they're not going to retool their shop just to make a few civilian barrels. It doesn't seem like any military cares what's best, they just want what the contract says they are supposed to get.

Poor countries are already set up to chrome and know how to do it, they are unlikely to care about the small advantage Nitriding gives over chrome if it costs them money to buy new equipment and train their guys to do it.

 

[Ar180shooter]

Yeah, so it's better for high heat, high rate of fire hard use. Makes me feel better should that ever be necessary lol.

With a semi auto and 5 rd mags, you'd have to be pretty quick on the trigger and reloads to even get close.

 

[Claven2]

So while we don't know which type of Nitriding they will be using it sounds like AR180shooter is the only one other than me (and maybe some other quiet people) who understands that Nitriding is superior to chrome lining in pretty much every way. For those of you who are unfamiliar and still think chrome is the best here is a little reading that may help change your mind.

https://www.ibccoatings.com/salt-bath-nitriding-ferritic-nitrocarburizing-dhn-dhfnc

When you get to the second last point under characteristics you may want to rethink your stand on chrome lining in a corrosive environment.

I am in no way supporting M+M but their choice of surface treatments is tip of the spear

Chrome and nitride are romper room. Real shooters insist on stellite liners.

 

[xdmer]

And I learned something new today =)

Chrome and nitride are romper room. Real shooters insist on stellite liners.