since this seems always to come up go to kenton industries (kentonindustries.com) for $75 for distance and the same charge for wind. fill out the cartridge/gun specs, call them for help on style for your scope and 2 weeks later they come. these are marked in yards; ie, 200 yard zero then 25 yard lines until a marked 300 and on to 800 (for my 6mmBR). buy one set of cards; 1)set up & 2)wind at $40. if you can remember the number of clicks you have used forget this cause you have no need.