Fri May 29, 2015 10:01 am
				
				It depends on how carbed the beer is in the keg already.
If you're at a known volumes of CO2, you could subtract that from your final desired volumes & prime for the remainder.  It likely won't be exact, but it'll give you a relatively close starting point.
On a side note, I've used those Coopers carb tabs before.  They're kind of a pain in the ass & rather inconsistent.  Some of them are next to impossible to fit through the mouth of the bottle.  There's another brand that makes smaller ones that are a little better.  
Honestly I don't get enough difference between forced carb & natural carb to make the extra effort worth it.  If it were me I'd just CP fill off the keg & be done with it.  Or if I *really* wanted natural carbed bottles, I'd set aside enough to do a 6 pack before I kegged it in the first place.  Then you just calculate for the smaller volume... about a gallon.
				Lee
"Show me on this doll where the internet hurt you."
"Every zoo is a petting zoo if you man the fuck up."

 BN Army // 13th Mountain Division 
