I'm in the market for a good target .22LR. I'm looking at 1913's, KK 500 and similar. I'd love to buy new but I'm not sure I can justify the expense.

If I'm going down the used route I'd like to know how accurate is accurate. In fact, even if I buy new I'd like to know.

If I have a rifle batch tested, say at Eley test range, what would be a good result? How can I judge if the rifle really is 'accurate'?