"Gunsmith" is not ! 6.55x55 requires a long action (look at any Tikka).
99.9% of 30-06 headsize actions will accept 6.5x55.
If any issue use Win or Rem brass that has .473 rim diameter.
Works just fine and with proper throat/twist is great with VLD bullets.
If building, go with 6.5x55 "AI" or 6.5x06.

Paranoia strikes deep
Into your life it will creep
It starts when you're always afraid
Step out of line, the man come and take you away