ive been reloading for a couple of years now and today ran into a issue with my savage 11 rifle in 223 i have some hornady 52gr bthp that my bolt wont close on and are loaded to spec by the manual 2.230 so i pull out my trusty hornady oal measuring kit and pull the length and it tells me my chamber for this bullet is 2.190 at the lands which is well under spec but all my other bullets are fine just the 52 gr i measured with 40 or so different bullets checked diameter hell i even checked the head space on my rifle in general however im having a hard time understanding why the 52 gr comes up so much short of spec and i have alot of room to push out my other bullets to get to the lands