10mm vs .40S&W Ballistic Gel Test Comparison With The Glock 20!
This ballistic gel test compares the performance of 10mm Auto and .40 S&W, both 180-grain jacketed hollow points (JHPs), fired from a Glock 20. The .40 S&W demonstrated slightly greater penetration (14 inches) compared to the 10mm (12.375 inches), while the 10mm showed marginally more expansion. Both calibers performed comparably in terms of wound channel appearance, with the 10mm's performance being highly ammo-dependent. The test also noted that the .40 S&W was more cost-effective per box.










