I have both New Haven made and Portuguese made Model 70's.
The Portugal made rifles are tighter in tolerance than the New Haven models, don't read into this that the New Haven is bad, it's not.
I was very fortunate to be able to order a Classic Stainless in 375 H&H back in the 1990's, it was 1of 2 in the country (Australia) and the other one was paid for, so I bought it and shipped it across the country, had my dealers license back then. As soon as I received it I took the Tupperware stock off, bedded a HS-Precision Sporter stock to it, ripped the barrel off and re-chambered it to 375 Weatherby.
Absolute stonker of a rifle, gets 3.000fps from a 260g Accubonds and 2890fps from 300g pills…love it actually!
Cheers.