NEW Underwood 9mm Xtreme Defender Test
This review tests the Underwood 9mm 90gr Xtreme Defender, comparing it against Federal HST. The Xtreme Defender, especially the +P+ load, demonstrated significantly deeper penetration (21.5 inches) and a wider permanent wound cavity (2 inches) in ballistic gel compared to the HST. Testing through heavy clothing and barriers showed minimal impact on penetration, with the solid copper bullet retaining its effectiveness.









