Yes this is true, what I was getting at is I have a ION XE (smart little starter gun) and a Vloader Eye the gun shoots out upto 17bps and the hopper drops 20, where as my friend has an SLG which he set to 15bps now his hopper only drop 10bps there for some times when he's pressing the trigger nothing is happening.
This is for peeps buying there first gun, I know when I bought my first gun I was glad that someone told me something along these lines!