fremont,

I love the Quarter-bores, especially the 257 Weatherby. That being said, I would forgo the 25-06 and any other variant's, and build a 6-06. Pull the bullets you have and simply pass the brass through a 6-06 FL Sizing die and you're good to go. Twist your barrel at 1-8, go buy some Berger 105 VLD's or Hybrids, a couple of pounds of RL-25 and live happily ever after. A 105 Berger at 3300 is a real eye opener. As a bonus, it will feed like butter through any 06' variant long action.