Does a Gas Gun Lose Velocity? How Much?

This guide details how to test propellant temperature sensitivity, a crucial factor for consistent long-range accuracy. It emphasizes using a reliable chronograph and testing ammunition across a wide temperature range, from cold to hot conditions. The process involves calculating the muzzle velocity change per degree Fahrenheit to understand how temperature fluctuations affect performance, enabling shooters to account for these variations in their ballistic solutions.

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 video demonstrates the process of testing a handloaded 10mm cartridge featuring a 165gr Sig V-Crown JHP bullet and 9.0 grains of Hodgdon Longshot powder. An experienced handloader uses a Caldwell chronograph to measure velocities and calculate muzzle energy from two different barrel lengths (3.78" Glock 29 and 5" 1911), providing objective ballistic data.

This guide, presented by a Palmetto State Armory representative, demonstrates the audible and visual differences between supersonic and subsonic 300 Blackout ammunition when fired from a suppressed AR-15. It highlights that subsonic rounds eliminate the sonic crack, offering superior noise reduction for suppressed systems. The principles discussed are applicable to other calibers like 9mm.

This video demonstrates the impact of barrel length on muzzle velocity using .38 Special ammunition. A 1.8-inch barrel Ruger LCR and a 6-inch barrel Ruger GP100 were tested. The results show a significant velocity difference between the two barrel lengths, highlighting how barrel length affects projectile speed.

This video explains how to effectively use Ballistic Drop Compensator (BDC) reticles even with mismatched firearm and ammunition setups. The key takeaway is to adjust your primary zero point away from the traditional 100 yards to align the BDC hash marks with your specific ammunition's ballistic trajectory. This requires using tools like a chronograph and ballistic software to determine the correct zero distance, making BDC reticles functional for a wider range of setups.

This video provides a head-to-head accuracy test between the Ruger 10/22 and the Marlin Model 60, both chambered in .22 LR. The host, an experienced shooter, details the test methodology, including ammunition types and a consistent 25-yard range. The comparison highlights key features of each rifle, such as magazine capacity and aftermarket availability, concluding with a visual presentation of the shot groups.

This video details a comprehensive ballistics gel test for various .38 Special loads fired from a Smith & Wesson 642 snub-nose revolver. The expert instructor analyzes bullet expansion, penetration, and wound channels, offering critical insights into ammunition performance for self-defense. Key takeaways include the importance of bullet design for reliable expansion in short barrels and safety considerations for handloading .38 Special ammunition.

This guide details a head-to-head ballistic gel test comparing 9mm Luger +P and .40 S&W ammunition, as demonstrated by an experienced firearms reviewer. The test involved firing specific loads through denim barriers into gel blocks, measuring velocity and penetration, and analyzing recovered projectiles. The .40 S&W HST showed more dramatic expansion, while the 9mm +P achieved deeper penetration. The comparison highlights trade-offs between terminal performance, capacity, and recoil in compact firearms.

This video demonstrates the initial live fire of a .50 Beowulf AR-15 platform rifle, featuring a side-charging upper receiver and a Vortex red dot optic. The host, identified as a firearms enthusiast and content creator, showcases the loading process, firing, and the significant impact of the large caliber rounds on steel targets at an outdoor range. The demonstration highlights proficient firearm handling and range safety awareness.