What is the Best Caliber for your SBR?

In today's video we test SBR's in a serious of strenous tests to find the best caliber for your short barrel rifle. https://bit.ly/garandthumb Bulletproof Everyone hoodie! Patreon Signup - https://www.patreon.com/GarandTHumb Onward Research http://onwardresearch.com/ SDI School: https://sdischool.co/Garand Xidax Computers: https://tribelink.co/Xidax Insta: https://www.instagram.com/garand_thumb/ GarandThumb on Facebook: https://www.facebook.com/garandthumb1