The 115 grain, .355 dia, FMJ @ 1100-1250 fps = extremely deadly. It will penetrate anyones cranium from 50 yards at least.
Aye, and a .22 lead round nose at a similar velocity is deadly, too. That does not make it a good choice for self defense, for 1/2 the reasons the 115 gr FMJ is also a poor choice: It is "self defense", not "assassination". The idea is to get an active attacker incapacitated quickly, without hitting anybody else.
Shooting somebody in the head at 50 yards as "self defense" is going to be a tough sell to a jury, even if you can pull it off. Hell, hitting an attacker that is trying to kill you at self defense distances (less than 21 feet) in the head is difficult, at best, and not necessarily fatal: a round nosed FMJ bullet that hits a roundish skull at a shallow angle may glance off, and even if it pentetrates the skull, it is not a guaranteed "one shot stop": there is no such thing. It's not easy to hit a small (think 3"x5") moving target under extreme time pressure (less than 2 seconds, from the holster): It's not like an attacker is going to stand there at 20 feet and let you take aim.
If, on the other hand, you opt to follow the advice of most self defense instructors and shoot for center of mass, and ignore their advice to use a quality expanding jacketed hollow point (opting instead for the 115 FMJ @ 1200 f/sec), you will put likely put a temporary .35 hole through their torso, in one side and out the other. Unless you hit their spine, that won't stop them, unless the want to be stopped. It may very well be fatal, but it won't likely be soon enough to keep them from inflicting some serious, possibly fatal damage to you, which is the whole point of the "self defense" thing. I have seen deer shot through the heart and or lungs with high powered rifles using soft pointed pullets run for 15-20 seconds and cover over 100 yards of ground ..... how much damage could a determined attacker do to you with a tire iron, a knife or a even a brick in 15 seconds? A bullet that pokes a hole through an attacker and passes through not only does not whack him with all the kinetic energy of the bullet (he may not even realize he was hit, as he's too busy bashing your head in with that brick), but also will hit
something or someone behind him. You better hope that is not an innocent bystander.....
Another argument for hollow points: Why would you poke a .35" temporary hole in your attcker to bleed him out, when you could poke a .5" hole in him to bleed him out faster by using premium self defense ammo? The LEOs in your area do, I'll bet.