On 4/1/2016 at 0:57 PM, JoNorvelleWalker said:Actually I use 5 ml for 1/4 oz.
You are shorting yourself just a tad. Who wouldn't want more alcohol!
An ounce is roughly 29.57 ml (Many people, including me, round up to 30ml). 1/4 of that is about 7.3925 ml. If you use 30 ml for an ounce then it is 7.5 ml for 1/4 ounce.