priming

Hi all, Just a quick one. I'm using the standard brown plastic brew bottles for my bottling. This time, to get more physical drinks out of my brew, i was thinking of filling 3/4 full or to 500ml or so. Does that fact change the amount of priming sugar used to carbonate/pressurize the bottles...

hi I'm just about to bottle some cider. last time I made it I used the carbonation drops I used two . I was just going to use sugar this time so I didn't need to buy the drops. Last time it was not bubbly enough how much sugar do people recommend for 750 ml pet bottles I like it very carbonated...