Aye; Warhammer 40k is 28mm Heroic which I am told means that heads, arms and weapons are slightly oversized. I am also told that this is approximately 1/60 for infantry models and that some manufacturers consider simple 28mm at 1/56.
ETA: I don’t play at all, but earlier this year I got very interested in the Warhammer 40k lore and I’ve picked up a lot of related information here and there.