NRA ELR national championships 

David Tubb competes at the ELR NRA National Championships in Camp Atterbury shooting a TUBBGUN in 37XC with Warner 400grain flatline bullets with nose ring. This video shows David shooting cold bore 3 shots/3 hits at 2156 yds.
David ended up winning the 2019 ELR heavy gun class at the ELR National Championships with the 37XC.