January 26, 2021
PROOF Research®’s Greg Hamilton and Sean Murphy Repeat Top Tough Man Honors at 2021 Mammoth Sniper Challenge
Hamilton and Murphy take 1st place for the second year in a row at the…
January 21, 2020
PROOF Research’s Greg Hamilton and Sean Murphy Take Top Tough Man Honors at 2020 Mammoth Sniper Challenge
The grueling three-day precision rifle shooting competition brings the best-of-the-best shooters together to test their…
