I believe that if both rifles were absolutely identical, the brass is perfect, and the bullets used were from the same lot, that the .222 would win. There is no way to make them identical though, because Lapua doesn't make brass for the .222.
Actually, Lapua
does make brass for the .222 Rem. Maybe they don't export'em to the U.S.A., but I am sitting here looking at the cases I have.
I am in Sweden, and I can tell you that Lapua .222 Rem ammo is quite common in Sweden and Finland where this calibre is much more common than in North America. I am not sure if they sell empty cases -- I bought factory loads to get my cases.
This Lapua brass for the .222 is
very precise -- I have weighed 50 of my cases at random, and also measured their runout on my RCBS case gauge. They are the most uniform cases of any brand or calibre that I have run into.
John
