I listen to everyone talk about how their bullet is 9 fps faster than that one. Their bullet drops .3" less at 500 yards than that one, blah-blah-blah.[:@]
How far do you intend to shoot? If it's for predator protection, maybe 50'?
What do you intend to kill with it? Again, you say it's for protection, so I would guess that if you shoot at the predator with just about any gun, the noise alone would make it retreat. How about using pepper spray, I'm sure the animal would react the same way?
Pepper spray isn't as much fun, but it does the job.
I hunt with the cheapest ammo I can find...
240 grain Desert Eagle Hollow Point, as I won't shoot past 60-70 yards anyways and how dead do my deer/bear have to be?
It's cheaper for target practicing, that's for sure and it works for me.
I would change my mind if I were to use it for Grizzly though!