Blueberries

Hi can anyone advise how many blueberries would =1cp, I have been counting them as 5 = 1 cp unsure if this is correct. Thanks

If you go here it states 50 berries are 9.85g (1CP).........

but things like these are only a guide, testing is the best way to find out how X amount effects the BGs........has your counting been working so far............?