Modern hollow points penetrate, then mushroom so they come to a rapid stop. The mushroom increases the surface area and ensure delivering the kinetic energy to the target. An FMJ usually retains its shape and goes straight through soft tissue. Hitting bone changes the results dramatically. The projectile frequently shatters.
A hollow point is preferable to avoid having the round go through the intended target. The reduced penetration applies to household walls as wells. It's just a much better choice.
I'll stick with my .303 for long range, my 12 ga. up close, and my mini revolver for in my face nose to nose close.
Thanks for the link.