The 47D 1911 Magazine and Beyond: Gun Guys Ep. 20

This video provides an expert-level analysis of the .45 ACP cartridge's effectiveness, comparing it to 9mm. It delves into the historical context of its design by John Browning, its ballistics, and its performance in modern contexts. The analysis debunks myths like 'knockdown power' and emphasizes that shot placement, penetration, and expansion are key factors, with modern ammunition narrowing the performance gap between calibers. The video concludes that .45 ACP remains a viable and effective cartridge, especially for suppressed use, but stresses that shooter skill and training are paramount.

This video tests the bullet resistance of a sledgehammer against various calibers, from .22 LR to .50 BMG. The sledgehammer demonstrates significant resistance, with no caliber achieving a complete pass-through. Notably, even larger calibers like 7.62x39mm and 5.56x45mm NATO caused significant denting and bullet fragmentation, while the .50 BMG created a substantial divot. The experiment concludes that a sledgehammer is effectively bulletproof against the tested rounds.

This video reviews the CMMG Zeroed 46K suppressor, designed for .45 ACP firearms like pistol caliber carbines (PCCs) and personal defense weapons (PDWs). The reviewer highlights its affordability, durable construction (17-4 stainless steel with nitride finish), and universal hub mounting system. It's noted as full-auto rated with a recommended cooldown period and is specifically not intended for handguns with tilting barrels.

This video tests the penetration capabilities of various calibers through stacked drywall sheets. It demonstrates how different bullet types and calibers perform against this common building material, offering a practical, albeit unconventional, look at projectile energy transfer and stopping power.

This video argues that the .45 ACP remains superior to the 9mm in terms of stopping power and impact, despite the 9mm's popularity. It details the historical development of both calibers, compares their ballistic performance, and discusses practical applications in self-defense and home defense scenarios. The .45 ACP is highlighted for its larger diameter, slower velocity, and resulting wider wound channels, especially when expansion fails.

This video, presented by an experienced instructor, identifies the five worst calibers for budget ammunition stockpiling in 2026: 300 Blackout, 10mm Auto, .45 ACP, 6.5 Creedmoor, and .308 Win/7.62 NATO. It highlights their high cost per round due to limited mass production or material expenses. The instructor recommends more affordable and widely available alternatives like 9mm, .40 S&W, 5.56mm/.223, and 7.62x39mm for budget-conscious individuals.

This guide details the dangers of 'thumbing the hammer down' on a loaded firearm, a technique strongly advised against by experts. It emphasizes that this action, which involves pulling the trigger while manually lowering the hammer, carries a high risk of accidental discharge if the thumb slips. The expert instruction highlights safer alternatives like engaging the manual safety for 'cocked and locked' carry or clearing the chamber entirely.

This guide details the advanced technique of hand stippling a 1911 firearm frame for enhanced grip, as demonstrated by a master gunsmith. It covers the precise application of texture using a punch and hammer, followed by meticulous filing to refine the edges. This process requires significant skill and attention to detail for a professional finish.

This guide details the proper technique for cycling the slide on a semi-automatic pistol, specifically the 1911, as explained by Ken Hackathorn. It emphasizes avoiding "gun abuse" by not slamming the slide on an empty chamber, which can cause premature wear. The explanation includes the mechanical reasons behind this, focusing on how the cartridge rim stabilizes the extractor and cushions the slide's action.

Massad Ayoob, a renowned firearms instructor and legal expert, details the critical post-Defensive Gun Use (DGU) protocol. He emphasizes that the most common mistake is failing to immediately call 911 after a DGU, even if no shots were fired. This action is crucial for establishing oneself as the victim complainant in the ensuing legal aftermath.