For what it's worth, my 1903A3 is a Remington with a two-groove barrel, and it's a tack driver at 200 yards.  I don't have access to a 1000 yard range to try different loads at, so I'm going to have to do some homework, and try loads at 100 yards to see how they group, and hopefully I can translate the results to 1000 yards. 

I looked at the ELD Match bullets too.  Hornady says that the ELDs are the next generation Match technology.  Perhaps I'll try both ELD and A-Max.