There's a couple gun lines I find very irritating, and would do well with a few tweaks to their mechanics.
Antigua line:
This entire line of weaponry is very exhausting to use, I always walk away with a sore trigger finger...
Here's four separate suggestions to improve the weapon to be less click spammy, and more enjoyable to use.
1. Increase the delay between each shot, and increase the damage to compensate.
2. Fire two quick shots with each mouse click, 3 clicks will fire the full clip. Wouldn't be good for those who fire 5 then wait, though.
3. Fire once on click, and again on release. 1-2 3-4 5-6. Same as the above, many prefer to fire 5 and wait to avoid reloads.
4. Holding down the fire button will shoot the gun at the maximum fire rate. Can still be fired one shot at a time with short clicks.
Alchemer line:
Alchemers are literally unusable if you're OCD. The ricochets ALWAYS bouncing left is an OCD's worst nightmare.
It's a quirky weapon that demands an unconventional practice of always firing your shots ever so slightly to the right. It's broken.
Here's two separate suggestions:
1. Make the ricochets split in two evenly, each at half the strength of the current. This will fix the lopsidedness but make it slightly weaker when used against a single target.
2. Make ricochets bounce to the 2nd nearest enemy when striking an enemy, and bounce at a LOGICAL angle when striking a surface. When bouncing off of an enemy, the ricochet should have a split second arming time so that it hits an adjacent enemy instead of the current target. If no 2nd target is available, crash the client and current server and abandon all hope. (Or just make the enemy take the full force of all projectiles.)
The rest of the guns are ok for the most part, they all have their strengths and weaknesses and ideal scenarios, but these two need to be looked at.
The guns work just fine. I mean, I see what you're getting at, but it wouldn't really improve the guns or how to use them.
Antigua line is the fast-attack-low-damage gun line. We have similar weapons for swords in the cutter line.
Alchemer is fine as is. Bouncing to the left at a random angle is something you learn, and adapt to. The only real broken thing with alchemers is the fact that they can make internal ricochets happen, which does stupidly high damage but aren't easy to pull off without knowing what you're doing.
Bottom line is these guns are fine. If they don't appeal to you then don't worry about using them.