223 vs 300 Blackout: 16" and 10.5" Barrels Compared!

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 tests the ballistic resistance of a large rubber band ball against various calibers of bullets, from .22LR up to .50 BMG. The experiment demonstrates that while the rubber band ball can stop smaller calibers and even slugs and rifle rounds to some extent, it is ultimately overwhelmed by higher-powered ammunition like the .30-06 and .50 BMG, with the latter completely destroying the ball and its target.

This video from Line 45, hosted by Sully, provides expert advice on which ammunition calibers to stockpile in anticipation of the next ammo shortage, predicted to intensify in 2025. Sully details the unique advantages and current market conditions for 300 Blackout, .308 Winchester, 10mm Auto, 12 Gauge, .22 LR, .223 Remington/5.56 NATO, and 9mm Luger, emphasizing the importance of proactive stocking for various shooting applications, from self-defense to hunting and training.

This video demonstrates the penetration capabilities of various firearm calibers through rolls of toilet paper. It highlights how different bullet types and energy levels affect penetration depth, offering a visual, albeit unconventional, comparison of ballistic performance. The experiment provides a basic understanding of how projectile energy translates to stopping power against a soft, compressible medium.

This video reveals surprising truths about the AR-15 platform, debunking the myth of over-cleaning and highlighting its modularity. It explains how standard AR-15 lowers can accept larger caliber uppers like .450 Bushmaster, .458 SOCOM, and .50 Beowulf, offering increased versatility. A critical warning is issued regarding the dangers of mixing 5.56mm and .300 Blackout ammunition due to potential catastrophic failures. Finally, it emphasizes that building an AR-15 requires more than just parts, stressing the importance of proper assembly, tools, and headspace verification, advising caution for DIY builders.

This video demonstrates a scientific approach to testing whether bullets speed up after leaving the muzzle, using two chronographs placed at different distances. The experiment reveals that bullets consistently slow down due to atmospheric resistance and gravity, debunking the common misconception that they might accelerate. The instructor emphasizes the importance of understanding ballistic principles for accurate steel target rating and overall preparedness.

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.