However, a hunting rifle like the 742 Remington isn&#x27;t necessarily going to have the tolerances to allow sustained firing that a proper AR-15 pattern rifle will allow (I&#x27;m sure many of them made for civilians cargo cult that detail).<p>On the other hand, a lot of this is scenario dependent.  Bruce Clayton advised using the metric of &quot;how many firefights do you think you can survive?&quot; as a guide for how much ammo to store.  I myself, if I expect a scenario to be survivable and am by myself, prefer something like a bolt action Scout rifle in .308&#x2F;7.62 NATO used in shoot once and scoot mode.  My evil black rifle in 5.56 NATO (which I&#x27;ll note requires something better than FMJ ammo to be effective) is reserved for situations where I want to make the best account of myself and&#x2F;or are with other people in a mutually defending scenario.