Originally Posted by Captain Jim
Beware of low cost ammo as much of it is junk! Cheap ammo is usually not reloadable, steel cased, and can tear up the extractors on your nice semi-auto in no time at all if you shoot any considerable amount of it!
I keep hearing that, but I've been buying Wolf brand .223's for the longest time and I've never had an extractor problem. For the price differance, get the cheap ammo and another extractor, it's still cheaper than buying full price!
If you do go the cheap stuff route, one thing I also advise is watching out for cheap Russian crap (except Wolf) that has copper jacketed steel bullets that can really but a hurting on your barrel. The copper rubs off and the steel eats up rifling like a monster.