Hi, I want to carbonate a soda and rum recipe and then bottle, with carbonation remaining for many weeks or months. followed various threads and looked up things but want to know whether I can achieve enough carbonation using a keg (carbonate water, add rum and syrup, re-carbonate, fill bottle with a beer gun). Are there better ways to achieve this result? Am wanting to bottle in glass. Hope I don't need to invest in an in bottle carbonator for wine growers!