I going to assume you are looking at hollow base pistol bullets. It is always helpful to give the details in the opening post. Stuff like caliber, bullet, make, etc.
I prefer the hollow base design in my 9mm.
Must pay attention to "fit" in chamber. When loaded at a "standard" length show in a manual, some bullet profiles can come in contact with the lands before the case headspaces in the chamber.
A lack of planning on your part does not necessarily constitute an emergency on my part.