OK. So I know that generally, it's better to always have weapons of the same speed, so that the "bullets" all hit together, but here's the thing........
I'm an absolutely terrible shot. Awful. Biblically awful. So, I was wondering whether it might actually benefit me to have my shots arriving at different times, so there's at least a remote chance of hitting something.
I'm talking about some weapons firing at 700m/s and some at 750 m/s
First, mixing speeds won't do much, but it will make the slower speeds hit the target later or miss by a meter(Though this can be useful to hit mines with)
In vanilla, the game would calculate the average of all the speeds your gun has and use that calculation to aim your shots. Now - it just uses the highest speed any of your guns have. So even if you have 5 guns that are 600ms, the other 750ms gun would make the aim to use 750ms calculation to hit a target.
Just experiment, I don't think your shots will miss much.