I have watched several videos in the last week on boolit sizing for wheel guns. Some say to size a boolit so it will and can be firmly pushed through the cylinder with a finger for best accuracy and to keep from leading.
https://m.youtube.com/watch?v=bdj6cldgNzw
https://m.youtube.com/watch?v=WCxFAjtlQPc
Then I watch some more videos that say to size .001 over cylinder diameter or I will get leading and poor accuracy.....
https://m.youtube.com/watch?v=8VNjn9aIlWY
So which way is correct???