REAL 10MM! Underwood 135 Grain vs 165 Grain! Ballistic Gel Test Using the Glock 20!
This comprehensive ballistic gel test by Tools&Targets evaluates two Underwood 10mm Auto loads: a 135gr JHP and a 165gr Bonded JHP, fired from a Glock 20 Gen 4. The test reveals significant differences in terminal performance, with the 165gr bonded round demonstrating superior integrity and expansion, making it the preferred choice for 'real' 10mm effectiveness.









