What is HEIGHT Over BORE? #shorts

This video highlights critical firearm safety failures and explains the concept of 'height over bore.' It demonstrates how the difference in height between a firearm's optic and its barrel affects bullet impact, especially at close ranges. The content emphasizes the importance of understanding this principle and adhering to the four fundamental rules of gun safety to prevent accidents.

This video from Brownells, featuring Caleb, explores the optimal zero distances for an AR-15, primarily for competition use. It analyzes four common zero distances: 25, 36, 50, and 100 yards, detailing their impact zones on an IPSC A-zone target at various ranges. The instructor emphasizes that the 'best' zero is dependent on the intended use of the firearm and the optic employed, recommending the 100-yard zero as a versatile option for experienced shooters, while suggesting 36 or 50 yards for those using red dots or LPVOs respectively, especially for closer engagements.

This guide details the process of zeroing a handgun optic, emphasizing the reduction of shooter error by using a stable rest. It covers firing initial groups, calculating adjustments based on optic specifications, and making incremental changes to achieve a precise point of impact at a recommended 25-yard distance, while acknowledging the impact of environmental factors like wind.

This guide details the installation and zeroing process for the Vortex Viper shotgun enclosed micro red dot sight, presented by Caleb from Brownells. It addresses common shotgun optic mounting challenges like varying receiver hole spacing and comb height issues. The video emphasizes proper screw selection, torquing procedures, and a practical method for zeroing with both slugs and shot, highlighting the optic's features like motion activation and multiple reticle options.

Chris from Regular Guy Training explains his handgun zeroing process, emphasizing starting at 3 yards to establish height over bore and windage before moving to the final zero distance (typically 25 yards). He details how to measure and adjust sights, and the importance of understanding personal shooting tendencies for consistent accuracy.

This video demonstrates that a budget AR-15 build, often referred to as a 'Special (Poor's) Rifle' (SPR), can achieve practical accuracy at 1000 yards for under $1000. The hosts, experienced shooters, highlight the evolution of the AR market and the accessibility of long-range shooting with modern optics and ammunition, while also discussing potential challenges with budget components.

This video demonstrates the critical safety features of a World War II Mk 2 fragmentation grenade. It highlights the importance of the safety pin and the safety lever (spoon), emphasizing that the grenade is safe as long as the lever is held down. The demonstration includes the accidental dropping of the grenade after the pin was removed, underscoring the danger of mishandling.

This guide details the installation and operation of the Meta Tactical Apex Series bullpup conversion kit for Glock handguns, transforming them into carbine-like platforms. It covers the assembly process, accessory mounting, and operational features like rear magazine insertion and an integrated spare magazine holder. The video demonstrates safe handling and performance during live fire, highlighting the unique 16-inch barrel configuration. Instruction is provided by an experienced individual familiar with bullpup ergonomics and conversion kit assembly.

This guide, presented by 1st Shot Tactical, details the essential steps for safely transporting a handgun via commercial airline. It emphasizes using a hard-sided, lockable case like the Apache 1800, ensuring the firearm and magazines are unloaded, and properly declaring the weapon at check-in, drawing on the practitioner's expertise in firearm safety and airline protocols.

This guide details the process of throwing a fragmentation-style grenade, emphasizing the importance of immediate cover and cautious post-throw inspection. It highlights the need for proper tactical gear and awareness of range safety protocols. The content is presented by a tactical content creator familiar with range operations.