Connecting rod squirt holes?

My first 340 i built had a lot of side to side oil clearance between the two rods. machine shop said it would be ok with the HV oil pump i was using. With 20w50 oil at idle and hot i had 10 psi. would go way up with rpm but at 700 rpm it barely moved the needle. Never had any problem with it.......just didn't like it. A couple years down the road i found some NOS stock rods.( payed 5 buck a rod for them!!!) pulled the eng down for other oil leaking problem and decided to re ring it with the new rods.
same everything including the pump.(new bearing of course) oil pressure when to 60 psi HOT! that's when i started experimenting with thinner oils End up with a 5w20 w 25 psi at idle hot. My et showed it made more power too!
I don't remember how big a gap was between the rods but i do remember that with the new rods it was is spec.