and melt the ceramic into the surface of the rifle’s bore. The ceramic coating is extremely
resistant to jacket fouling. I’ve treated around a dozen rifles with DBC over the past three years, and even in the worst-fouling bores jacket fouling was reduced at least 75 percent. Some bores simply do not jacket foul anymore, one reason I never clean prairie dog rifles during a shoot these days. Oh, and one treatment lasts for the life of the barrel. In my experience DBC is even
more effective than using finer grits to fire-lap a bore, as well as being quicker and easier. Also, more fire-lapping tends to move the throat farther for- ward. A Dyna Bore-Coat kit treats at least half a dozen barrels, and even more in smaller bores such as the typical 17 to 6mms used for most varmint hunt- ing. I applied it to the 221’s barrel, then shot five rounds and cleaned the bore. Since then the rifle has shot noticeably more accurately … in fact, even a little better than when I worked up its first loads, and the fliers have pretty much disappeared. This was so heartening that the
same routine also was applied to a lami- nated-stock, heavy-barreled Remington 223, the most accurate factory centerfire I’ve ever owned. It was purchased new from Capital Sports & Western Wear in Helena, Montana, and then tuned by free-floating the barrel, epoxy-bedding the action, touching up the barrel crown with a Brownells hand-tool, and shoot- ing half-a-dozen NECO-treated fire- lapping bullets to smooth the tool marks left by the chamber reamer. With match-grade 50-grain bullets
and a load of 26.0 grains of Ramshot TAC, the rifle would average 0.25" for five-shot groups at 100 yards. Of course, that was with ammo put together with all the accuracy tricks, a big scope, and wind flags, but it also would shoot just about any factory load into half an inch. It shot so well that it was used for
an awful lot of prairie dog shooting for the next few years, though since I’m normally “testing” several rifles on any rodent shoot, it didn’t get shot as much as, say, Chub Eastman’s. Still, the shoot- ing eventually took its toll on the throat, and it was no longer a half-inch rifle. After rejuvenating the 221 Fireball
I took a look at the throat of the 223, and decided it was time to smooth out some
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cracking there, too. The same basic rou- tine was used, except only 10 rounds of 220-grit were needed to remove almost all signs of throat erosion. Also, I didn’t bother with the Dyna Bore-Coat, since this rifle’s barrel always has refused to jacket foul. When new I kept extending the number of rounds between clean- ing, eventually shooting it 500 rounds several times and still never finding any copper in the bore. So now I don’t clean it at all, except for a couple of patches soaked in Hoppe’s No. 9 after every season to knock out the slight trace of powder fouling from the clean-burning charge of Ramshot TAC propellant in its standard load. After the throat-lapping, three
five-shot groups were fired at 100 yards with some Black Hills factory ammo
featuring 50-grain Ballistic Tips. The groups measured 0.445, 0.626 and 0.379, for an average of 0.483 inch – but the 0.626 group had a flier, with the other four shots going into 0.202! This 223 has become the favorite gopher and prairie dog rifle of my wife, Eileen, over the years, and she’s very happy to see it shooting so well again. Yeah, they make new barrels
every day, but when a good barrel can be restored I’d just as soon not pay for another. A bore scope helps the process but really isn’t necessary, since 10 to 15 shots will smooth any throat that’s salvageable. The NECO kit costs $69.95 and the Dyna Bore Coat kit costs $44.95. They each contain enough stuff to reju- venate a bunch of varmint rifle barrels.
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In .17 Cal. to 50 BMG, and diameters from .650" to 1.50". Installed prices start at $275 for stainless or blued. Dealer pricing is also available for Vais Arms, Inc. installed brakes, or for brakes only (to be installed by other qualified gunsmiths).
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