Grizzly 9mm +P vs Underwood +P+! Ballistic Gel Test With The Sig P365!
This video compares the ballistic performance of Grizzly 9mm +P and Underwood 9mm +P+ ammunition fired from a Sig P365 with a 3-inch barrel. Both loads demonstrated significant expansion and velocity, though the Underwood +P+ shed more mass. The instructor notes that while these loads are powerful, the added recoil and flash might not be worth the marginal performance gains over standard loads, suggesting alternatives like Federal's 9mm HST (V-Crown) for comparable performance with less violence.












