This video debunks the myth that lubricating ammunition is beneficial. The host explains that oil on ammunition can lead to dangerous pressure spikes within the firearm due to altered case expansion against the chamber walls. This excess pressure can cause head thrust, damaging bolt lugs, flattening primers, and potentially causing the firearm to over-cycle. The video emphasizes that any feeding or extraction issues should be addressed by fixing the firearm itself, not by altering the ammunition. It advises against lubricating ammunition for any firearm, including for handloaders who should remove case sizing lube.
This video from Brownells Gun Techs™ Caleb and Steve, "The Smyth Busters," investigates the old reloader's warning about excessive bullet setback causing firearm explosions. They explain that bullet setback, where a bullet is pushed deeper into a cartridge case, can compress the powder charge, leading to dangerous pressure spikes. While most firearms are built with pressure safety margins, consistently exceeding normal maximums can cause accelerated wear or even catastrophic failure, a "KA-BOOM." The risk is amplified with maximum-pressure handloads and +P ammunition, and the issue isn't limited to pistols, as rifle cartridges are also susceptible. Bullet setback can also cause case swelling, leading to feeding problems, which is particularly concerning during self-defense situations. The video confirms that this is not a myth, and excess bullet setback can indeed damage guns.
This video delves into the topic of chamber pressure, specifically in relation to the 30 Super Carry cartridge. It aims to explain how elevated chamber pressure can contribute to wear and tear on firearms. The discussion is a follow-up to previous content about the 30 Super Carry round, providing further technical insights for firearm enthusiasts interested in cartridge performance and firearm longevity.
This Gun Talk Radio segment explores the intriguing question of whether the 5.7x28mm cartridge can be safely and effectively used in a revolver. Host Tom delves into the critical aspect of chamber pressures associated with this unique ammunition and advises viewers on necessary protective equipment. The discussion also hints at potentially superior alternatives to using 5.7x28mm in a revolver. The video encourages listeners to tune into Gun Talk Radio for more expert discussions on firearms every Sunday.
This video explores how firearm factories determined chamber pressure in the pre-electronic era using a specialized Mosin-Nagant rifle. The rifle is modified with a pressure ring around the chamber, allowing a gage to crush a calibrated copper slug to measure the force. This Mosin-Nagant serves as a clear example of this historical pressure testing apparatus and methodology.
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