I've found one or two tips in the meat over the years. Never thought to weigh them though.
I can tell you this from experience, a 75 amax, without a tip, fired out of a 223, at 600 yards, will hit 22ish inches low.
I was amazed at my 257 wtby though... ttsx zero'd at 200, and shot one with a missing tip, hit in the group...