Loved that. Eagerly anticipating the next chapter.

Do you suppose that Mycroft might 'reward' John by getting him a permit for that gun of his? (Seeing as how handguns are practically illegal in the UK?)

And if Sherlock was handling that rifle in the same fashion as that handgun in TGG, I'm not surprised that John wouldn't want him to keep it. Friendly fire is not fun and so not of the good.