.45acp Penetration in Water (Hollow Point vs FMJ) - TheFireArmGuy
This YouTube video from TheFireArmGuy compares the penetration effects of .45 ACP hollow point (HP) ammunition versus full metal jacket (FMJ) ammunition when fired into water. The description highlights that the results were "amazing," suggesting a notable difference in how each bullet type performs upon impact and travels through the water medium. The video likely provides visual evidence of the expansion and integrity of the hollow points and the penetration of the FMJ rounds.










