This is a proposal for a new flag: Eternal Shots.
When you get this flag your shots will not expire (i.e. they will run "forever" unless they hit someone) and they will ricochet even in non-ricochet worlds. Balancing effect: instead of having a fixed "reload time", the rule is that there can be at most N shots of yours around: that is, before shooting the N+1 bullet you have to wait for one of your previous bullets to hit someone. This is extremely dangerous if your shots hit pyramids, since you'll find yourself unable to shoot.