I plan on brewing a 10 gallon batch this weekend. About half of it is for a party in late July, in which I plan to keg. I have an 1/8 keg, which I believe is 3.8 gallons. I want to add priming sugar and naturally carbonate it, because I don't ever plan to hook it up to CO2. The keg will be kicked that night, so we'll be tapping it with a party tap. I usually use about 3.5 oz of priming sugar to bottle 5 gallons of an APA depending on the temperature. I know the keg isn't five gallons, but would I use the same ratio of priming sugar in the keg as I do in the bottles?