Videos tagged with Group Size

This expert-level review by Preston Moore details a comprehensive test of the LMT 12.5" Direct Impingement barrel. The analysis includes a thorough borescope inspection revealing minor imperfections in the chrome lining and throat, alongside detailed ballistic testing with three different ammunition types. The data provides valuable insights into the barrel's accuracy, velocity, and overall performance compared to other models.

This video provides an in-depth lot testing analysis of AAC 77gr OTM ammunition, comparing consistency and performance across different production runs. Lead Firearms Instructor Preston Moore utilizes advanced equipment and a rigorous methodology to evaluate velocity, accuracy, and lot-to-lot variance. The findings suggest AAC 77gr OTM offers a cost-effective option, though it exhibits less consistency than premium match-grade ammunition.

This video from SmythBusters investigates the common practice of mounting optics on AR-15 handguards, including bridging the receiver and handguard. Steve and Caleb from Brownells use red dot sights and LPVOs to demonstrate how this mounting method impacts accuracy, group size, and zero retention. They conduct drop tests to show zero shift and compare the performance of optics mounted on the handguard versus the receiver. The video concludes by debunking this internet myth and emphasizing the importance of proper optic mounting for reliable firearm performance.

This review thoroughly examines the accuracy and durability of a Geissele 16.25-inch Cold Hammer Forged (CHF) 5.56 NATO barrel. Through detailed bench inspection, borescope analysis, and extensive range testing with multiple ammunition types, the barrel's performance is quantified. The analysis includes group size measurements, velocity data, and a comparison against other leading barrel manufacturers, highlighting its competitive standing.

This video showcases the first group of shots fired from a suppressed T/C Encore rifle. The focus is on the firearm's performance, particularly with the addition of a suppressor, and the resulting accuracy from the initial firing session.

John "Shrek" McPhee explains that tight groupings at short range (25-50 yards) are often misleading due to the bullet's short flight time, which masks shooter error. As distance increases, the longer flight time amplifies shooter mechanics' impact, causing groups to open up and revealing inconsistencies. Mastering fundamentals is key to achieving consistent long-range accuracy.

This video showcases a 21-round group and zeroing process at 25 yards, featuring a Trijicon RMR with a 3.25 MOA dot. While the specific firearm isn't explicitly named in the title or description, the focus on a red dot optic and group size suggests a pistol or carbine. The content is geared towards firearm enthusiasts interested in optics performance and basic marksmanship.

This video explores the practical application of weight sorting centerfire rifle ammunition to improve consistency and accuracy. The creator tests this theory using inexpensive bulk 5.56mm ammunition at a 100-yard range. The video details the process of weight sorting, the range tests conducted, target measurements, and insights gained from the experiment. It emphasizes that the content is for educational and entertainment purposes and was filmed in a safe, regulated environment.

This video features range time with a Ruger American Predator rifle chambered in .223 Remington. The creator tests the rifle's accuracy, reporting group sizes of 11/16" at 50 yards and 1" at 100 yards (averaging 1 3/16"). The video also includes a brief comparison to a Savage Walking Varminter, noting the Ruger performed slightly better with inexpensive ammunition on a windy day, using the same optics and rings. The creator expresses satisfaction with the rifle's performance.

This Q&A delves into the Besa machine gun's adoption by Britain for tanks, highlighting its advantages over early Browning models and the Vickers. It also explores the limited potential of the ACR as an M16 upper kit, contrasting it with modern successful designs like the Brownells BRN-180. The discussion touches on the inefficiency of auto-ejecting magazines and the historical preference for heel releases. Furthermore, it examines firearms innovation in smaller nations like Czechoslovakia and Finland, the mechanics of en bloc versus stripper clips, and methods for measuring group size.

This video provides a comprehensive test of three different match-grade .308 ammunition options for long-range precision shooting. The host, Joel, meticulously analyzes each round by measuring muzzle velocity with a chronograph, evaluating standard deviation, and calculating extreme spread. He then compares the accuracy of each ammunition type by measuring group sizes on paper, all through a Daniel Defense DD5V2 rifle. The video highlights sponsors Ventura Munitions, BLACKHAWK!, and Blue Alpha Gear, and encourages support through Patreon and the TFBTV Discord server.

This TFB TV video tests the German government's claims of a 'wandering point of impact' in the HK G36K when the rifle heats up. An initial cold barrel test at 50 yards yielded a 1.25-inch group. After 120 rounds of full-auto fire, a subsequent hot barrel test showed no significant deviation in point of impact or group size. While this specific test didn't confirm the issue, further testing at longer distances is recommended.