This video addresses concerns about wear and tear on AR-15 bolt lugs, specifically in the context of a Schmeisser AR rifle. The creator, having experienced over 9000 rounds without issues, responds to online criticism by conducting a "deep dive" into AR bolt mechanics. The conclusion suggests that markings on bolt lugs are normal, especially at higher round counts. The video also features a mention of Sellier & Bellot ammunition as a sponsor.
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.
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