I use a mix of oil and ATF by dipping the pistons in it to cover the wrist pins and let it drain back into the old steel 3 Lb. coffer can for a little while(5 to 15 minutes depending on how long it takes to get to the next one, no powder.
I wipe the excessive oil out of every cylinder 4 or 5 times while assembling the short block and then one final time before I bolt the heads on
My motor seem to have the rings seated before starting now using this method
AKA, the key to getting the rings to seat well is cleanliness while assembling and the proper cylinder wall finish before installing the rings