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I agree. I always cast a wary eye at groupings advertised by a gun manufacturer simply because they either use a machine rest or someone who's sole purpose is to test the rifles, plus match grade ammo.
That said, I'm like you in that I like to try and practice as much as I can to get as close to that advertisement.
	
 If you had an ACOG I'd straight up be legging it out of there. But hey, thats just me... I'm not an expert... and when I go to the range I only use optics on my .30-06. 
	