Videos tagged with Primer Ignition

This video explains why lever-action rifles predominantly use flat-nosed or round-nosed bullets. The primary reason is the tubular magazine design, where cartridges are stacked. Pointed bullets can be ignited by recoil striking the primer of the next round, causing a dangerous chain reaction. Modern solutions like Hornady's Leverevolution ammo use polymer tips to mitigate this risk.

This video provides a detailed breakdown of how a lever action rifle functions, using a 3D rendering for clarity. It explains the mechanics of the lever, bolt, hammer, and firing pin during the firing cycle, from chambering a round to extraction and ejection. The explanation covers the process of cocking the hammer and igniting the primer, offering a clear understanding of the internal workings of this classic firearm type.

This guide, based on analysis by firearms instructor Colion Noir, details how an ejected shell casing can strike a live round and cause it to discharge. It emphasizes the rarity of such events but stresses the importance of proactive safety measures, such as keeping ammo boxes closed, to mitigate risks at the range. Noir's extensive experience provides a high level of authority to these safety recommendations.

This video explores the potential for a chain reaction of negligent discharges within a firearm's magazine tube. The experimenter tests various calibers, including 30-06, 7.62x54R, and 50 BMG, by dropping them down a pipe to simulate magazine loading. The results indicate that while smaller calibers are unlikely to cause a chain reaction, heavy and sharp 50 BMG rounds can indeed initiate a cascade of primer strikes and detonations.

This video explores the effects of igniting a .50 BMG primer using various projectile-based methods, moving beyond a simple firing pin strike. The experiment demonstrates that while a direct primer strike can initiate the powder charge, the outcome is highly dependent on the projectile's size, power, and ability to seal the primer pocket. The presenter, acting as an amateur experimenter, highlights the unpredictable nature of such tests and the potential for catastrophic case failure.

The CMMG Mk47 'Mutant' is a hybrid firearm designed to integrate the 7.62x39mm cartridge into an AR-15-style platform. It addresses common reliability issues by utilizing a beefed-up bolt based on a .308 design and a modified firing pin mechanism for reliable primer ignition with difficult Russian primers. The rifle accepts AK magazines, and its receiver set is proprietary to accommodate these and the larger bolt carrier group. While offering AR-like ergonomics and controls, it notably lacks a last-round bolt hold-open feature, a common trait of AK magazine-fed systems.

This guide details four methods for measuring firing pin protrusion on AR-15, M16, and M4 platforms, presented by School of the American Rifle. Proper protrusion is crucial for reliable primer ignition and preventing primer piercing. The methods include using a depth/anvil gauge, a caliper, a specialized firing pin protrusion gauge, and a government-issue style gauge. The recommended range for firing pin protrusion is typically between 0.028" and 0.036".

This guide details an experimental modification to a 12-gauge plastic flare gun, attempting to increase hammer force with rubber bands to ignite a .50 BMG primer. The process involves securing the flare gun, adding rubber bands, testing tension, and remote firing. It highlights the challenges of off-center strikes and insufficient force, ultimately concluding the modification was unsuccessful in igniting the primer. The video emphasizes extreme safety precautions due to the inherent dangers of such experiments.

This guide details an experimental attempt to fire a .50 BMG round from a 12-gauge Orion flare gun. The video demonstrates the challenges of igniting a .50 BMG primer with a standard flare gun mechanism and explores an alternative ignition method using a BB gun. The experiment highlights safety considerations and the technical difficulties of such modifications, as advised by instructor Edwin Sarkissian.

This video details a cold-weather test of 6.5 Creedmoor ammunition to investigate hang-fire issues, specifically with Varget powder and small rifle primers. The instructor, with extensive reloading experience, systematically tested various primers under freezing conditions, noting significant differences in performance. The findings highlight the impact of temperature on primer sensitivity and powder ignition, offering practical insights for reloaders facing similar challenges.

This video documents the assembly and initial blank test fire of the AK-50, a custom firearm chambered in 50 BMG. The test fire successfully ignites a 50 BMG primer using a specialized trigger control group designed by CMC Triggers. The event highlights the culmination of the AK-50 build process and its initial functional test.

Chris Cheng, a professional marksman and Top Shot champion, breaks down the components of rifle cartridges and how to select the correct ammunition. He explains the difference between caliber measurement systems (imperial and metric) and emphasizes checking the rifle's barrel for the correct caliber stamp. The video details the function of the primer, gunpowder, and bullet within a cartridge, differentiating between rimfire and centerfire designs.