I don't know if coils take a set over time but if they do, then hammers down would be good. Certainly no necessity of leaving snap caps in the chambers. Snap em on caps, take the forend off, open barrels, remove caps, close barrels, put the forend back on. Or snap em on a block of wood, put barrels on, put forend on. Same result. Think about it a minute. If you finished shooting and removed the forend before opening, it wouldn't cock would it? Again same result.

jack