I've had similar results with 4x5" 320TXP. Some grain showed up on 35mm 400TX so my guess is the enlarging factor is what kept the large format film grain-free.

I've had similar results with 4x5" 320TXP. Some grain showed up on 35mm 400TX so my guess is the enlarging factor is what kept the large format film grain-free. I see the same effect using traditional developers. Ultimately I didn't find any value-add with caffenol, since it still needs to be fixed, and the fixer needs to be disposed of properly. Plus, the results are better with Ilfosol 3 or HC-110 stand development.