What is the Best Caliber for your SBR?
This guide details the performance of various calibers in Short Barreled Rifles (SBRs), based on expert testing by Garand Thumb. It covers recoil, accuracy at distance, ballistic performance in gel and through barriers, and loadout weight comparisons. The analysis helps viewers understand the strengths and weaknesses of calibers like 5.56 NATO, 5.45x39mm, .300 Blackout, 7.62x39mm, and .308 Winchester for SBR applications.













