They are rare in my neck of the woods. Most I've ever found in a year is a couple. My brother does better on them than I do. I dig my nickels too, not sure what's up with that. They are a fun and rare find, not many minted compared to wheats or mercury dimes of the same years!
I have only dug 2 ....I think ...Tho right now I can only confirm 1 in my aging mind , the first was 3 + years ago after 17 years of Detecting got 1 'V' a couple years later.
They seem hard to come by tho I mostly relic hunt but I have hit my fair share of yards in the past.
Good Job
PS. Is your bullet 50 + caliber? Spencer Maybe.
It could be smaller I suppose