Videos tagged with Bolt Velocity

This video from Brownells Gun Techs features Caleb and Steve addressing a common misconception among DIY AR-15 builders. They argue that simply because a self-built AR-15 functions, it doesn't mean it's assembled correctly. The video highlights potential errors like gas system misalignment, over-gassing, and using the wrong buffer weight, which can lead to malfunctions as fouling accumulates or when switching ammunition. The core message is that there's a significant difference between a rifle that merely operates and one that performs optimally, emphasizing the importance of proper assembly or seeking professional help.

This video from Brownells Gun Techs Steve and Caleb investigates the myth of whether over-lubricating an AR-15 can cause malfunctions. They explain that while attracting dust is unlikely to be a major issue, excess lubricant can lead to "excess head thrust" by increasing bolt velocity, especially in over-gassed rifles. They also note that excess oil can burn off into carbon fouling. For other firearm types, too much lubricant can actually slow down necessary parts. The video concludes that over-lubrication is indeed a real issue that can cause malfunctions, and that under-lubrication is generally more damaging in the long run. The best approach is to use just enough lubricant where needed.

This video discusses the French NATO standardization efforts in the late 1950s, focusing on the MAS 49-56 rifle and its attempted conversion to the 7.62x51mm NATO cartridge. Despite the cartridge similarity to the rifle's original 7.5mm round, the project was abandoned due to significant redesign challenges arising from the 7.62mm round's different pressure curve. The conversion resulted in issues like poor extraction and broken parts due to high bolt velocity. Only 150 of these modified rifles were produced by the St. Etienne factory before the program's cancellation.

This TFBTV episode features James interviewing OSS representatives at SHOT Range Day. The discussion centers on OSS's new 1-piece Gen 5 Helical QD suppressors, highlighting their advantages over the previous 3-piece Gen 4 models. Key benefits of the Helical QD suppressors include reduced backpressure, lower bolt velocity, decreased flash signature, and improved thermal management, all without compromising sound suppression. They are also noted for being lighter and more affordable.