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<blockquote data-quote="KevinCollins" data-source="post: 1205642" data-attributes="member: 96464"><p>No problem.</p><p></p><p>I have not heard many good things about the Noreen Firearms Bad News 338. Like most large AR-type rifles, it is sensitive to the types of ammunition that it uses. It probably prefers Lapua brass, and fails with Hornady brass. I have also heard that two Noreen rifles have blown up.</p><p></p><p>The DRD Tactical Kivaari and the F&D Defense FD-338 are well-made rifles, but they are also sensitive to the types of ammunition that they use. DRD Tactical will only guarantee reliable operation when Lapua brand ammunition is used.</p><p></p><p>The main problem with AR-type rifles that are chambered for the 338 Lapua Magnum cartridge is the lack of metal around the chamber. Thin chamber walls will flex more than thick walls when a cartridge is fired. When the walls relax, they clamp down on the brass like a collet. This results in extraction problems. Since Hornady brass is softer than Lapua brass, it is more prone to being stuck in a chamber with thin walls.</p><p></p><p>Another problem with AR-type rifles is primary extraction. They have little, if any, camming action to pry a cartridge case from the chamber. Without some form of mechanical advantage to pull a case from a chamber, extraction problems can be more common.</p><p></p><p>Later,</p><p></p><p>Kevin</p></blockquote><p></p>
[QUOTE="KevinCollins, post: 1205642, member: 96464"] No problem. I have not heard many good things about the Noreen Firearms Bad News 338. Like most large AR-type rifles, it is sensitive to the types of ammunition that it uses. It probably prefers Lapua brass, and fails with Hornady brass. I have also heard that two Noreen rifles have blown up. The DRD Tactical Kivaari and the F&D Defense FD-338 are well-made rifles, but they are also sensitive to the types of ammunition that they use. DRD Tactical will only guarantee reliable operation when Lapua brand ammunition is used. The main problem with AR-type rifles that are chambered for the 338 Lapua Magnum cartridge is the lack of metal around the chamber. Thin chamber walls will flex more than thick walls when a cartridge is fired. When the walls relax, they clamp down on the brass like a collet. This results in extraction problems. Since Hornady brass is softer than Lapua brass, it is more prone to being stuck in a chamber with thin walls. Another problem with AR-type rifles is primary extraction. They have little, if any, camming action to pry a cartridge case from the chamber. Without some form of mechanical advantage to pull a case from a chamber, extraction problems can be more common. Later, Kevin [/QUOTE]
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