NEW: 45 Colt Model 1854  

Give me a bigger calibers than nothing better or older than the 45 Colt got it there bub

This rifle is made by Smith & Wesson and this new model of it is now chambered in a bullet caliber cartridge called "Colt .45". Yes, it can be confusing put ammo is sometimes named after the company that designed it or first brought it out. Colt .45 is actually a very old caliber and even Smith & Wesson have bullet calibers with their name on it. I hope that helps you understand. Aloha!