When I started experimenting with powder coating, I started paying more attention to nose diameters of my boolits.
I was surprised to find that my RCBS 25-100 casting boolits from 1:10 (lino-ww) varied on the nose from .251 to .254 on the same boolit. This is right before the first driving band, and before any powder coating. Not all boolits show that much OOR condition, but many vary from .252 to .253. Now this boolit is not what I would call a bore rider, but is .001 to .003 OOR condition on this fairly short nose cause for concern in trying to shoot good groups and scores in CBA competition?