Alright, sound like we've got things cleared up now. I can see how their monolithic may have a different FOC (borrowed from the archery world) since its a solid alloy...and now come to think of it the outside deminsions may not be the same in regards to length, if different materials are used. The wieght and profiles are the same, and that's what I was getting hung up on. I got the impression you thought one was HP while the other was FMJ or what-not.

I would still *like* to think they'd group well enough within 200yards that you could play around and learn to compensate the little differences...but then you're right back where you started, just with a shorter road to hoe.