Our club used Humbrol 184 Freight stock grey which is perfect for GWR stock but is very hard to get in Australia so does anyone know an equivalent in other brands?
If you are air brushing, check out SMS German Basalt Grey : https://www.scalemodeller.com.au/products/premium-german-basalt-grey-ral7012-30ml If you want a brush on acrylic, Vallejo Dark Grey would be a reasonable match : https://acrylicosvallejo.com/en/product/hobby/model-color-en/dark-grey-70994/ Cheers, Gary.
I find the Vallejo paints great for airbrushing. Thier Grey Surface Primer is also great straight out of the bottle - although for Brass models I would suggest an Etching Primer. Paul
Just to add to the mix, I use Vallejo Medium Sea Grey for all grey freight stock, irrespective of company. Initially I bought the 'Air' version but soon realised that the game colour version was much more economical when let down for spraying with Vallejo air brush thinner.