Welcome to DRTV Texasmom,
TAB is correct, 45ACP & 45Colt are two entirely different calibers in the reloading world.
Get a reloading manual, do some research on reloading components, many members here have vast knowledge on reloading and can provide a great starting point.
For self-defense, I would use factory loaded ammo for that purpose.
Many options available to you when it comes to reloading. Glad your here.
tw