I dreamed a script for a movie about a week ago. Modern day men took a time machine back to 1863 and equipped each confederate regiment with a Marlin Model 60 and a large bag of .22LR ammunition.
Sorry, been done already with AK-47s; https://en.m.wikipedia.org/wiki/The_Guns_of_the_South
Have you been moonlighting for HBO?....they have a new series this fall based on what if the Confederacy won the civil war based on today....