You may find the extra kick of the .223 versus a .22 irresistible once you start tapping those targets quickly with a centre fire semi.-auto. A quality .223 (or larger caliber) semi. really can help one to produce quite a smile once the fun factor kicks in, making the cost of some decent Hornady 55FMJ's a pleasure to buy (my preference anyways when I can find them).
Happy shooting Carverk, which is exactly what your shooting experience should be once your cache of ATRS goodies are all Zeroed-In.
Cheers D