Cooper varmint, no modifications (haven't even lightened the trigger from its current setting of ~ 2 lbs); shooting 28 gr of N133 in Lapua brass w/ 62 gr custom bullets, seated out to where just a smidgen is in the neck; using bean bags (front and rear) and a Weaver 36 scope, and watching wind flags. Load obtained from prior gun owner. I don't know how he arrived at that load; however, I saw him shoot a 493-9x with that load. My only score shoot resulted in a 486-13x (dropped 12 points at 200 yds); my only group shoot resulted in a 100/200 agg of .6032 (no laughing, please

).
As before, is it realistic to think .25 MOA is attainable with a factory gun?