Home Forums Hunting & Shooting Ask The Gunwriters Dyna Bore Coat?? Opinions please!

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I looked in the barrel with my Teslong to monitor the gas ports while cleaning and treating...otherwise nothing special in my single experience with my AR.

I installed DBC in my Bushmaster carbine's chrome-lined barrel when it was new in 2007, without shooting it beforehand. Have cleaned it once since, after around 250 rounds, even though accuracy was still fine. Haven't cleaned it since, and it's still accurate.

Appreciate the tips and info. Have a barrel not yet used. Was going to run a few hundred pushes of lapping compound thru it anyway. “Unfired”’seems like the best time to apply.

I have had positive results in everything from unfired barrels to ancient, pitted barrels.

My gunsmith who has built several custom rifles for me laps every new barrel with JB bore compound. Every one he has built has been a 1/2 MOA shooter.

I've used DBC in several AR-15's. I didn't do anything special when applying it. These are rifles that get shot a lot in competition, and it does help to prevent a good deal of the copper fouling. However, it doesn't eliminate copper completely and I do clean periodically to remove the copper.

About how long does it last or should it last?

IME, the lifetime of the barrel.

It sure works on some of those old pitted barrels.My 1906 38-55 shoots about a 3" group at100 now when previously I had a hard time doing 6" at 50

Have one of those too. .50 Optima V2 muzzleloader. Was glad to see some comments on that. Still shoots minute of deer at the 50 or 60 yard shots we try to get but it’s time to stop the bleeding at least.

This stuff sounds good where in Canada can we get it and how much?
Never seen it or heard of it before Mule Deer

John,

Would Tec Gun Shield applied to automatic shotgun magazine tubes help cleaning the carbon off the tubes....ie Remington 1100 etc?

I have never tried it for that, but would guess it might help.

Unfortunately, I’m not aware of any place to buy it in Canada, these days.

So once the bore coat is applied to the bore it lasts forever? Nothing would remove it?

Correct. According to research it cures to a hardness of 7-9 mhos depending on what it’s applied to it can be harder. At 7-9 mhos it’s as hard as quartz, topaz and conundrum. Only thing harder is diamond.

I have just used the DTBC in a Tikka T3 338WM which is the worst copper fouling rifle that I have ever had.
Cleaned the barrel 3 times with Wipe Out foam plus the Wipe Out Accelarator to get down to bare metal as I could see with my Teslong Bore scope. I then put the DTBC in the barrel last Friday and let it stand muzzle down for 3 days. Just got through firing 9 rounds through it to “cure” the DTBC as per the instructions.
I cleaned the barrel with Shooter’s Choice soaked patches only and still have copper fouling in the barrel although not as bad as previously.
(Before using the DTBC, I could see copper build up on the riflings with a very defined edge around the copper with my Teslong bore scope, IOW the copper fouling was BAD!)
Now it a relatively smoothed out line of copper coloring down the rifling near the muzzle. Left the barrel wet with the Shooters Choice and there was a lot of blue on the patches still. Checked it with the bore scope and there is still copper.
So, what next?
One of the posters here mentioned he uses Patch Out. Should I try Patch out or even Wipe Out? Will any of this remove the DTBC as well as the copper??
Also what about Kroil? Would it get under the DTBC and possibly remove it?
Obviously I don’t want to do that…….

I think John recommend using acetone as the last procedure to remove any oils or other contamination from the bore

Ok if I left some Wipe Out residue in the barrel, what do I do now?
Do I try to remove whatever DTBC is left in the barrel to re-apply, and if so, how do I go about that?

As far as I know, there isn't a solvent made that will remove DBC. I generally use Montana X-Treme Copper Killer after the curing shots, leaving it in the bore overnight, which generally does the trick. (There's a special corner in my basement for using the stuff...)

As has been mentioned in past threads on DBC, generally the bore fouls during the initial curing shots, but after cleaning that fouling out, the bore generally becomes easier to clean with each successive cleaning--though sometimes a second application is necessary.

Have mentioned before that a .338 WM barrel was the one that really convinced me how well DBC worked. Within 20 rounds it fouled so much the bore was essentially copper-plated, and accuracy went to hell. If I recall correctly, I did apply DBC twice on that one--and after that the rifle would go 75-80 rounds before groups opened up slightly--and any decent copper solvent would remove what little copper was there very quickly.