They shoot them all the time at 1k army marksmanship unit does it all the time at the cmp shoots they do with a 77gr bullet F class does it also with 90gr Laurie Holland did it with a customized savage bolt gun and holds or tied the smallest group record in the UK go to target shooter mag and get into the archives and check it out and go to
www.6mmbr.com and go to the 17to223 forums and read and ask questions as fare as an ar make sure its a wylde chamber that chamber can take a 223 and 5.56 do your homework and good luck
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