The advice of using FMJ for 7.65 Browning is well known and valid.
But recent .380 ACP loads did perform well (regarding both penetration and expansion), even when shot out of "pocket pistols".
I have tests available for a Ruger LCP in .380 ACP. Sure penetration was limited to 6" (ballistic gel) but it did expand and considering the small package and the short barrel it can be regarded as OK.
EDIT: Sorry, ammo was Speer Gold Dot, 90 grain.
But recent .380 ACP loads did perform well (regarding both penetration and expansion), even when shot out of "pocket pistols".
I have tests available for a Ruger LCP in .380 ACP. Sure penetration was limited to 6" (ballistic gel) but it did expand and considering the small package and the short barrel it can be regarded as OK.
EDIT: Sorry, ammo was Speer Gold Dot, 90 grain.