Haven't heard anyone mention this idea yet, so I'll add it to see what you think. Since the 25-06 is not a hard kicker and you are trying to make a varmint gun, I'd recommend installing bull barrel, which means you'll also have to install a new stock designed to fit the barrel. The larger barrel and larger stock will both add weight to the gun, thus reducing recoil and helping improve your accuracy, and the larger diameter barrel will allow you to shoot for longer periods of time without your barrel overheating, which is a common problem associated with shooting p dogs. It may be a more expensive route, but you can sell your old barrel and stock for a little extra cash, and you'll be much happier with your gun p dog hunting and at the range, as will everyone else who is hunting with you.