Can I get any/all opinions about which of these is better in a Colt 6830?
I want to reserve a bulk purchase (still in transit) ASAP but the seller is not 100% on the specifics: which is lacquer coated; which I'd polymer coated; pretty sure tula is lacquer; pretty sure lacquer is better suited for an AR type; pretty sure both are non corrosive; both likely steel cased.
I researched the two but apparently recent ammo from both makers can be poly or lacquer and may be corrosive or not.
Anyway, I'd appreciate any/all input.
Mahalo!

Not corrosive if manufactured in the last 5 years

Tula black box. Poly coated case

Brown bear laquer coated case

They both don't come off. Tula will tend to create
A light powder residue.  Laquer will not come off the case
As long as not soaked in chemicals.

Recommended you clean the chambers before you
Put brass in. May get stuck.

If your gun is new. It is recommended to use brass cases
To break in the barrel. Using Steel from new may cause stuck
Cases.

Tula may require a longer firing pin. (I make titanium ones .025" longer)

Out of my AR in 762x39 I get 1 to 1.25" groups from Tula
Brown bear 1" groups. Silver Bear .75" or better

I keep hearing Tula black box. And I see pics of a black box. Is black box a specific type of ammo with unique characteristics? Or is it just the color of the box?
And what would you recommend?  Lacquer or poly? Doesn't matter in a colt? Either or? Any preference as far as reliability?

Tula comes in bulk packaging and it can be anything.  Thats Military Surplus.

I recommend to NOT use Steel Case in a NEW GUN.

I recommend to NOT use Steel Case in a NEW GUN.

What is this "new gun" of which you speak?  You mean there are firearms out there less than 70 years old???

What is this "new gun" of which you speak?  You mean there are firearms out there less than 70 years old???

We are talking about a new colt AR 6930 in 762x39.
AR's chambered in 762x39 are on the tight side. Some can shoot steel case
From new. But normally they make AR chambers tighter. So the steel cases
Sometimes get stuck. So you sometimes need to run 100 rounds of brass
Thru the gun. Before shooting steel cases.

Tula comes in bulk packaging and it can be anything.  Thats Military Surplus.

I recommend to NOT use Steel Case in a NEW GUN.

Ok. Thanks.
So I just got an email from the seller and he says "it's polymer coated steel, not lacquer, so it'll run better in the ar". So his opinion is polymer will run better in my rifle. And my rifle is a 20 year old colt 6830 match target (16" heavy bbl).

So considering its a broken in old rifle, would you agree the poly coated steel ammo is better than lacquer coated, in my particular rifle?

What is this "new gun" of which you speak?  You mean there are firearms out there less than 70 years old???

i guess 'brand new'. But mines 20yrs old (or young :0)

Not corrosive if manufactured in the last 5 years

Tula black box. Poly coated case

Brown bear laquer coated case

They both don't come off. Tula will tend to create
A light powder residue.  Laquer will not come off the case
As long as not soaked in chemicals.

Recommended you clean the chambers before you
Put brass in. May get stuck.

If your gun is new. It is recommended to use brass cases
To break in the barrel. Using Steel from new may cause stuck
Cases.

Tula may require a longer firing pin. (I make titanium ones .025" longer)

Out of my AR in 762x39 I get 1 to 1.25" groups from Tula
Brown bear 1" groups. Silver Bear .75" or better

Speed trek......two questions please......remember, my rifle is used/broken in.......
1) what about the other contentious issue regarding poly vs lacquer, which is lacquer is better for long term storage since the poly coated ammo, for one reason or another, will begin rusting sooner than the lacquer coated ammo, under the same conditions.  Is this another myth or is it true?
2) is the 'light strike' problem with deep seated primers more of an issue with home built, pieced together, 7.62x39 AR's, and not an issue with higher quality factory AR's built for this cartridge - like my Colt 6830? I've barely put a handful of ammo thru this thing since I only got a small amount when i first bought it, so I haven't been able to determine this for myself.
Thanks.

1) laquer last a bit longer than poly. Look in the grass at Koko Head.

2) Dont go there. Factories do not use longer firing pins or mod the bolt (except MGI). When you call them they will tell you american brass case only. They will tell you steel may or may not work. 

Since your gun is used do you know how many rounds went thru it?

1) laquer last a bit longer than poly. Look in the grass at Koko Head.

2) Dont go there. Factories do not use longer firing pins or mod the bolt (except MGI). When you call them they will tell you american brass case only. They will tell you steel may or may not work. 

Since your gun is used do you know how many rounds went thru it?

I asked the guy before I bought it, and he said 'maybe 400rds', but I'm sure thats a fraction of what he put through it.
Why do you ask? 
So tell me, what's the risk in putting in a longer firing pin (like yours) if its working ok now?  On my particular rifle-colt 6839?  Possible slam fires?  Any other concerns?

No slam Fires. So far in testing no piercing primers on American ammo

Take out your bolt and measure the firing pin

AR spec is .025"

AK spec is .045-.055"

No slam Fires. So far in testing no piercing primers on American ammo

Take out your bolt and measure the firing pin

AR spec is .025"

AK spec is .045-.055"

what dimension is that?

what the firing pin protrudes from the bolt face

what the firing pin protrudes from the bolt face

I have a 64ths ruler so i can do the math off that, but I don't think there's any practical way to accurately make such a measurement 'manually'.  If I ever do I'll let u know.
Thanks.

you need a dial or digital caliper....bring it by xring and I can measure it for you...

just make sure I am there first

you need a dial or digital caliper....bring it by xring and I can measure it for you...

just make sure I am there first

Mahalos my braddah, but I stay on da big island!  I'll look into getting one or if a local smith has one.