Bouncing:
Can be either mechanical or electronic...
Mechanical usually occurs on guns that kick quite hard, and have a very short trigger pull, such as cockers.
Electronic is much the same...but its to do with teh trigger switch...
What it is, is when you can pull teh trigger, very slowly, and at a certain point, teh gun will just keep firing and go into "runaway"...like full auto.
Lots of times, it is too short a trigger pull..or...that combined with too much magnetic adjustenment.
Ramping:
Used to be a cheat used by some players, on electronic guns..whereby, after a certain amout of trigger pulls, abnd at a certain (usually low) rate of fire has been achieved, teh gun takes over and "adds" shots...eg, you walk teh trigger at say 7 bps (easy) and teh gun will shoot anything from 15 to as fast as teh loader will feed it (20 plus).
Now, Ramping has been legalised in certain events.
I cant remember which events like which, but...all are capped at 15 bps..some require 3 shots in semi, then ramp to 15 bps with 7 bps trigger pulls, and if you stop firing, then start again within 1 second...the ramping continues...if after 1 second, you start again at 3 balls in semi....other rules are teh same, without teh 1 second restart (if you stop firing, at all, its back to semi for three shots)..others have NXL full auto ramping...someone else maybe able to correct me, on teh various rules, but thats about teh size of it.
There is also something called Velocity Ramping...this is mega bad news, and should never be used...it makes teh balles exit teh gun above 300fps, for extended range...but its dangerous.