BC,

So to summarize the 300WM will only be flatter than the 7mm at the heaviest weight?

As I get more into shooting the only think I've been really focused on is drift. Not so much the flatness of a cartridge.

I'm having a 300 WM custom built right now that is throated to shoot the Hornady A-Max at 208gr. It's a really long high BC bullet.

Tom