30-06 (I've added this info to my original post above)

Easy to reload for as I'm already well stocked with cases and .308 bullets. I really like the 8x57 chambering but most Oberndorfs I've seen for sale are the .318 variety which limits the bullet selection. Hawk bullets are the only ones I know of in the US.

When I first received the rifle, I checked headspace using a 30-06 NO-GO gauge. When the bolt fully closed, my heart sank a bit. After closer examination, I found that the bolt handle was contacting the stock before the action was completely closed. Carefully filing the stock allowed the bolt to fully lock. After that the NO-GO has slight resistance prior to closing, so it should easily pass with a field gauge. The prior owner probably had some problems with brass life if he reloaded for it.