Yes, it would be sufficient, but hollow points are more reliable when it comes to actual death due to the expansion of the bullet and it also does not overpenetrate. If you couldn't get hollow point rounds, then a FMJ is still better than nothing. Additionally, a 9mm is more than sufficient in terms of stopping power. Finally, yes, with handguns, there is more room for error as compared to a shotgun, so that is something that must be considered when choosing to CTB via a handgun.