Solid Roller Lifter Question

Just went thru this with my 410 stroker.
I tubed both lifter galleys, drilled .040 oil supply hole in each lifter bore. Used the 8043-16 comp lifters with .631 lift cam @1.5 rocker ratio without any problem of excessive oil pressure loss at full lift. I am using oiling thru the pushrods for a T&D rocker set up so that required the .040 dia. oil supply holes in each lifter bore. If you are not oiling thru the pushrods...you can use a much smaller oil hole to limit any pressure loss. Only other option is bush the block or grind away.