if I drill the flash hold to a larger diameter, will that affect anything?
If you drill them with a #45 drill bit, and the decapping pin in the Lee dies still will not enter, the Lee decapper is too small and should be replaced by Lee. Note the correct size for a flash hole is .082 inch.
Sometimes you get what you pay for, sometimes you only pay more for what you get.
Three shots are not a "group"...they are a "few".
If the Bible is the literal, infallible, unerring word of God...where are all those witches I am supposed to kill? (Exodus 22:18)