No, the death of Custer is possibly the least of the unknowns about that day. What remains a unknown is not how he died, but when during the battle he died. Yet, that isn’t all that of a mystery...
Some of Custer’s mutilations weren’t reported until after Libby Custer died in the early 1930’s.
Here in Hollywood, I had lunch months ago with a Paramount biggie. He claimed that after the failure of Oliver Stone’s “Bush” that Stone feverishly tried to knock on every exec’s door about a script he had that claimed the Feds wanted Custer dead because he had dirt on Gen Grant, so Grant had him assassinated. by screwing up the intelligence.
...and that he was a Republican. The Republican part was the eyes roll up moment for them. Stone was adamant about the Republican part..