Available = present. Some clubs got into the "two steps away = available", or "three steps away = available"; where'd that come from?
Even before this clarification, we wouldn't allow shooters to plan to run dry in the open. If you did, you were required to go to cover to reload, then leave cover and move back toward your original position, so that you could comply with the on-the-move requirement (that's why you're out in the open, right?). While it is dangerous to mix "tactics" with "games", our rationale was, if you had just engaged 3x2, who'd leave cover with their gun downloaded so? Before stepping into the unknown, you'd reload, right? So, we made running dry so onerous that nobody would do it. Regardless of the rationale, the new rule book allows reloading only behind cover, if the stage contains cover.