I only use one arrow, always. I seriously doubt that I would have a problem breaking arrows if I shot groups, but I find it relaxing to be able to shoot, then walk and pull, and it makes me focus on shooting one good shot every time. I think shooting groups might tend to make you forget about the fact that your first shot didn't go right where it needed to, as would be the case when hunting, because you would adjust your aim if it missed. Also, I try not to shoot from the same distance twice in a row.