With rimfire ammo the more you pay the lower the likelihood for flyers or off call shots. That is not to say they won't happen but the potential is reduced. Occasionally a lot of lower grade will meet the accuracy of the good stuff. I had a case[5000 rds] of medium grade RWS that was excellent up until the last two bricks. Investigation showed that there were two different lots in that case. A shooter/retailer explained that some makers of high grade .22's maintain lot integrity. That is they won't mix lots to fill cases. The best one can do is try as many as possible and then buy as much of the best as possible.
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