Everthing is relative. As far as a perfect all around varmint round, I think the 204 in a Cooper is going to be hard to beat. I'd take it over a 17 , 223, 22-250, or 6BR any day for varmint hunting. A 39gr BK bullet has got great 400 yard ballistics beating these other rounds in both better windage and less drop at 400 yards, with less blast and/or recoil, while delivering respectable energy out to 300 yards.
If anyone wants better wind resistance and less drop then the 39gr Sierra at 400 yrds, then they are not going to do it with a 6mm bullet unless they are going to use a larger case like a 6 Dasher or 6x47. Ballistics don't lie.
If anyone wants better wind resistance and less drop then the 39gr Sierra at 400 yrds, then they are not going to do it with a 6mm bullet unless they are going to use a larger case like a 6 Dasher or 6x47. Ballistics don't lie.