Custer was among the first shot as they came down Medicine tail coulee. and its terrible that historians refuse to correct it their heads stuck in the sand.He was hauled up between horses to the area they finally found him on last stand hill. He could have had to be hauled from spot to spot maybe not all at once. The account by Chief John Grass who was there saw the first five shot immediately since they knew quite well how to spot the leaders.
When reading the John Grass account keep in mind bias and also misunderstanding of the words he used such as the name Custer. Many used the name but at the time barely a few if that knew it was Custer and John Grass being a top chief smoked the peace pipe with Custer over in the black hills. Not only MAY he have recognized the voice but also the face. He almost CERTAINLY was one of the "identifiers" of Custer as he was there even before they finished killing them. That is likely why Custer was not mutilated. In other words everything Grass said rings true both in details and by the way he comes across. In the statement he tells the interviewer the adopted son "say nothing of this till I and the others are dead" THAT RULES OUT GLORY HUNTING AND LYING.
Why have historians and Custer groups ignored him. There could be many reasons but bias is a big one most analyses coming from modern whites who will not break with the old cliches and movie images over the decades. Also the way Grass spoke the wording honestly could confuse people since he said "Custer" also I spotted that he interwove the Rosebud battle a few days before MIXING IT IN with the Custer battle. That and other details which match greatly increase the truth of what he said. He also was and described that he was in the correct spot in the camp and at the correct time to be waiting for them to come down the sloped ravine.