sawtooth,
The barrels aren't necessarily "thin" on NULA's. The weight is saved elsewhere, in the action and stock, so you can order whatever barrel contour you want and still end up with a light rifle. In .30 caliber I prefer the #2 contour, which is .6" at the muzzle.
Melviun also doesn't "prefer smaller calibers." Order whatever you want. He'll make you a .416 Rigby if that's what you need.
