When you say "heavy barrel" do you mean a varmint weight or magnum weight? I don't believe that you will find a factory bolt gun with either. Find yourself a Stevens 200 or a Savage 10 on a used rack and build what you want. I have used three 200's as donors and all three have made excellent shooters. My recipe for your bolt gun is as follows:
Stevens 200 action
Shilen chrome-moly 24" barrel ( weight of choice)
SharpShooter Supply Competition trigger
Boyd's Laminated stock in color of choice
Scope of choice
I've done this rifle in 250/3000 Ackley 40*.
GOOD LUCK and GOOD SHOOTING!!!