Which is better when it comes to overpentration

[SENEN_NIEVES]

Hello Mr Ayoob



My question is , of all the seroiuos calibers for carry, 9 mm, 40, 45, 357, which caliber and round would be less prone to a overpenetration

[Mas Ayoob]

Won't be about caliber so much as it will be about bullet configuration. At the risk of oversimplification, the more the bullet opens up, the less likely it is to overpenetrate.
best,
Mas