I've been spending a bit of time researching the Indian Mutiny.
I think that we really don't know half as much as we should about the conflict. It cries out a scholar to do what Ampal Singh Sidhu did for the Sikh Wars. Anyhow poking about on Jstor is helping me find out a bit more. Eventually, I hope to be able to write a few articles for my blog.
Here's something that I recently came across might be of interest. The Wahabis who joined Bakht Khan at the siege of Delhi were conventionally armed. That is to say they used the same muskets as the Sepoys. Bakht Khan himself had decades of service in the Company Artillery and was from a family with royal connections.