Any bullet experts?

Hey everyone, been awhile. Detecting here in AZ is so much different than back east. So hard to find places to detect that haven't been pounded to death. Back east I could door knock no problem. Here the ground is so dry you don't want to mess up anyone's lawn, if they even have one. Most abandoned lots have been pounded and most ghost towns too, though you really need to see who the property owner is. Then of course detecting in 100+ degree weather is no fun.

I traded in my Mustang GT and bought a brand new Jeep Wrangler Willy's. Now I can drive through the desert looking for signs of old trash. That is what I did here. Found an area with old rusted cans and detected. Found a couple modern bullets then I dug this one. It measures as a .44 caliber. Now to me it looks to be a Civil War era Colt pistol bullet. A buddy who is well versed in bullets told me this. Plus to me it looks like the right bullet. Any one here confirm this too or tell me it is wrong? Now while there were a few skirmishes here in AZ this was not found near one of them. But it was the wild west at one time and these bullets were definitely used. All input is appreciated!

Also any input on why my pics come out sideways is also appreciated..LOL