1st post... I recently purchased a 557 American 6.5 Creedmoor with walnut stock. This is my 1st CZ firearm, and I have yet to fire it. The seller was able to provide no information on the rifle or its history. My inspection of it shows it's seen very little use. I was hoping for some insight from those more familiar with the rifle as to what factory ammunition will work well in it. Its use will be target and occasional hunting. From what I've read, bullet profile (tangent, secant, or hybrid ogive) can affect accuracy, and some rifles are more sensitive to this than others. Until I get more familiar with the rifle I'd like to stick to factory ammunition and experiment with bullet types later, should I decide to reload my own. What has worked well for you as far as manufacturer, bullet weight, and type? Any information would be greatly appreciated.