Targets should print at the correct size on the corresponding size paper when the printer is set to the correct size of paper. When printing be sure to select the correct paper size and do not request that the print be scaled or shrank/expanded to fit the page.
Targets will attempt to print up to the full paper size you request. Normally, printers can not print to the full paper size, which can result in your Targets being trimmed slightly on the shorter dimension if you try to fit a large Target on a small page.