25-06 is an extremely good cartridge. My personal choice for Long Range shooting.

You may also want to consider the standard .243 Winchester. My brother has used a Rem700 243 forever and I have seen him bust groundhogs and coyotes on several occasions out past 400yrds.

Velocity is NOT a replacement for marksmanship, and the cheaper ammo cost will allow more practice and as we all know "Practice makes Best"