Steel Cut Oats: Volume to Weight Conversion

I tried a weight conversion for steel cut oats, but I was unable to come up with an easy ratio. Currently, I do 1/4 cup of oats to 7 fl oz of water (just over 3/4 cup.) When weighed, this all works out to 60g of oats and 400g of water. Simplified, this is a 3/20 ratio, and is not that friendly. The amounts that I use are based on experience, so I might want to play with a friendly ratio, in grams or ounces, and see if I can make it cook up right.