9mm vs. .45 | Tactical Rifleman

This video discusses an impending, potentially historic ammunition shortage driven by a global gunpowder scarcity. The speaker, citing information from a major ammunition manufacturer, advises viewers to stock up on essential calibers like 9mm, .22 LR, .380 ACP, and .45 ACP. While cautioning against hoarding, the emphasis is on ensuring personal readiness for self-defense and recreational shooting.

The US military's decision to adopt 9mm ammunition for sidearms, initially in the 1980s and continuing with the Sig P320, was driven by several key factors. These include standardization with NATO allies, logistical advantages like lighter weight and lower production cost, increased magazine capacity, and practical effectiveness, which emphasizes faster follow-up shots and more hits on target for the average soldier compared to larger calibers like .45 ACP. The recent adoption of the Sig P320 highlights continued adherence to these principles, with modularity being an added benefit.

This video provides a practical, experimental guide to understanding how winter clothing can impede self-defense ammunition performance. The host, demonstrating high authority in tactical gear and ammunition testing, uses ballistic gel to show that common JHP rounds in .380 ACP and 9mm Luger often fail to expand when fired through heavy clothing, leading to over-penetration. The 10mm Auto is highlighted as a caliber that can maintain expansion under these conditions.

This video reviews ten firearms suitable as truck guns for 2026, emphasizing versatility, compactness, and firepower. It highlights AR pistols like the Wilson Combat ARP for their adaptability in various calibers, and pistol caliber carbines such as the CZ Scorpion Evo 3 S1 and Kel-Tec Sub2000 CQB for their concealability and common ammunition. Shotguns like the Kel-Tec KS7 and SP12 Compact are presented for their close-range effectiveness, while AR-pattern platforms like the Bear Creek Arsenal AR10 pistol in 8.6 BLK and the Smith & Wesson Response offer modern features and modularity. The Ruger LC Carbine in .45 ACP and the Black Aces Tactical Pro Series L lever-action shotgun are noted for their practicality and unique designs. The Sig P320 Flux Legion package is showcased as an integrated pistol-caliber carbine system.

This video emphasizes that defensive ammunition selection should be based on performance and testing in the specific firearm, not marketing or brand reputation. Key performance indicators include reliable penetration (12-18 inches FBI benchmark), consistent expansion through barriers like clothing, and controllability for fast follow-up shots. The speaker, Ted from Line 45, highlights that barrel length, gun weight, and recoil tolerance significantly impact ammunition performance, making personal testing crucial.

This guide details a professional ballistic gel test of Underwood Xtreme Defender 9mm ammunition, including +P and +P+ variants. The test, conducted by a Tools&Targets host with high authority, utilizes a LabRadar chronograph and an HK SP5 to measure extreme velocities and terminal performance through a clothing barrier. Key takeaways include detailed penetration depths and projectile integrity analysis, highlighting the effectiveness of these specialized rounds for self-defense scenarios.

Instruction from Karl Erickson of Tactical Rifleman demonstrates a critical close-quarters combat technique: using a tactical fixed blade knife to create space when an opponent attempts to grab a pistol. The video highlights the risks of close-range pistol draws and advocates for a knife transition to safely disengage and re-establish a firing platform. This technique emphasizes anatomical targets for creating distance rather than immediate lethal force.

This guide details a Navy SEAL's CQC room clearing technique, emphasizing 'economy of motion' and precise footwork. It highlights the critical 'long step' maneuver for maintaining balance and readiness when entering a corner-fed room, contrasting it with the dangerous 'short step.' The instruction, delivered by a subject matter expert, focuses on life-saving fundamentals for tactical proficiency.

This guide details an emergency ammo resupply technique using a standard USGI 6-Pocket Bandolier, as demonstrated by Karl Erickson from Tactical Rifleman. It explains how to utilize the bandolier's expandable pockets, designed for 5.56mm magazines, to rapidly pack ammunition for field resupply. The technique emphasizes efficient loading and compact storage for integration into tactical kits.

This video provides an expert-level ballistic gelatin test comparing 9mm and .45 ACP defensive ammunition. Instruction comes from Pete, a retired USSF member, who details the performance of Barnes TAC-XPD 9mm and Cor-Bon Pow'R Ball .45 ACP. The comparison focuses on penetration depth, wound cavitation, and feeding reliability, particularly for 1911 platforms.