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Hi all, I'm Ryan from South Africa. I have been away from the hobby for about 5 years, so I'm a bit rusty. I am modelling Union Pacific. Previous posts (plus NMRA RP15.1) indicate that code 83 will be suitable for mainlines and code 70 for yards etc. Code 83 is equivalent to 132lb/ft rail. This was fine for 1950's mainlines, but is this still the size that UP and other class 1's are using on their mainlines? Many thanks in advance
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