I am planning on building a custom Varmit rifle. Not sure on the caliber yet but I would like to shoot 55 grain ballistic tips to help with bucking the wind and good knock down power.

I would like to build 1 similar to the Savage predator to where it has a 20" or 22" medium heavy Varmit contoured barrel. So its not a nightmare to pack around the fields. Love the Predator but I want a caliber that will push the 55's faster. Like a 220 Swift...22-250AI...243AI...6mm something...ect..ect...

So what barrel manufacturer would u reccommend. Plan on getting a action from the North guy and going from there.