Palmetto, your 2/10ths grain spread in charge weight's plenty good enough.
.308 Win. ammo with 3/10ths grain spread in charge weight's shot sub 3-inch 30-shot test groups at 600 yards.
There's many things more important that that much charge spread.
US Navy Distinguished Marksman Badge 153
Former USA Palma Team Member
NRA High Power Long Range High Master
NRA Smallbore Prone Master