We thoroughly test our barrels so that our quality is unsurpassed we own and shoot what we sell. In our test barrels, the PVD shot out in under 1000 rounds, regardless of the base metal (chrome molys and various stainless).Īs for catastrophic failures, we've had many during prototype testing, with and without Hard Blue, from most of the mass produced barrel manufacturers, including the high dollar ones. However, we found that PVD in a bore will not make the bore last longer. For strictly exterior finishes, it is hard to surpass, plus it may be applied over aluminum as well as steels. We designed an application that allowed even deposition of the PVD process in the bore. We performed a great deal of research in product development. It adds many advantages over an untreated barrel. Hard Blue is proprietary and is a combination of processes that we have tweaked to allow it to work for both stainless and CM barrels. We do not know where all this rumor started. They are also no longer made by Lothar Walther, so be careful as the newer barrels (regardless) do not have much history behind their longevity or attrition levels regardless of what you are told. The hard blue line had catastrophic failure issues when they first started trying to design them. If you want an accurate chrome lined barrel the N4 and Operator barrels are probably the best for that. Its one area that a chrome moly barrel would be a better choice for a precision barrel. Also stainless does not take nitriding as well as chrome-moly but it helps both. Superior Barrels has had good luck with nitrided barrels that are extrememly accurate (they market it under the Hard Blue. I wonder if its worth getting anything other than a good Chrome lined barrel? Thanks for the info and personal insight. This also produces a hard black exterior, similar in aappearance to Ion Bond (DLC). Curently the only thing known to procduce or exceed the improvement of barrel life vs hard chrome without compromising accuracy is nitriding the barrel. I will wait and see what others expereiences are with Ion Bond (DLC coating) before jumping in. I tried to jump on the "new and improved" barrel linings with an electroless nickle/silicon carbide lining in a PacNor blank and my accuracy went from sub MOA to 5 MOA in 1000 rounds. I am not real fond of new barrel linging processes anymore. It is currently unknown what that process does for longevity and accuracy on the interior of the barrel. The other barrels are straight stainless interior. Previously the company stated they could not do the inside of barrels and maintain the needed precision. Invest in the LPA Precision Machined Universal Aluminum Front Sight Super Mega Big Dot for improved accuracy and faster target acquisition.Only Denny's are inside to my knowledge. ![]()
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