Readers can see this based on the trailer... they don't even have to watch the film to see what I'm writing about in this review.
Jesse James - 1847 - 1882, died at the age of 35. (The actor portraying Jesse appears to be closer to 40 or even 45 - definitely not early 30s.)
Levi Straus, Jacob Davis - Denim Jeans invented 1873.
So while it is certainly possible Jesse James wore denim jeans the last 9 years of his life... I do question how likely is it to see so many cast members wearing jeans?? And would they ever have more than one pair of jeans. I imagine (perhaps incorrectly) that the first few years jeans were more of a luxury item and not as commonplace as they were 50 years later. Would an outlaw be going out of his way to buy a brand-spanking-new pair of jeans? Which also appear to be manufactured over a century later - even jeans made in the 1950s don't look the same as 2023 jeans.
To see Jesse James wearing, what look like, brand new, yet-to-be-washed (or soiled) bright blue denim jeans.. just ruins this film visually.
Complete lack of attention to this alone makes this film clearly an "afterthought" with no one actually paying any attention to historical accuracy... apparently made by some UK folks/production company, on a shoe-string budget, about a US outlaw and US history - and it shows.
Small, prolific, inaccuracies can ruin a film which is based on a historical figure...