Get in a position that allows for you to get back into cover quickly. Good gunners can pick your shots up right after you make them and start honing in on you.

I prefer to keep myself as hidden as possible to get the max amount of hits in before being pick at by gunners.

If you can get a heightened place that also offers quick cover, all the better. The height will allow for easier shots when (say you're on the ground) you only have a few moments to get some shots in.

Beef up an lav a lot. And stay mobile. Jump in it as your health goes down and go to another location.

The real trick is to get by a resupply depot and switch out suits to let them recharge.

Drop ships are hard to hit you really have to lead your shots.

Also don't worry about putting any reps on your suit. Just put as much armor and shield extenders as you can, your life expectancy is very short when your looking up and everyone else is gunning for you.

AV is pretty much a suicide role.

I'm not whining, I'm not complaining or asking for a nerf on anything.

I'm asking for strategies and tactics.

How do I get myself into a good position to kill a Gunship with a Forge Gun?

my first time playing in like two weeks, and just left my first match where the Myron Gunner went 71/0 and redlined the team pretty much by himself. I think everyone else on the team was using Militia Swarms to try and take him, which obviously don't work cause the Gunship can outrun the swarms, and I think I was the only one with a Forge Gun. But I could never get a shot on him. As a dedicated AV I felt embarrassed and outclassed., that I couldn't give this thing any trouble at all.

Every time I lined up a shot on him, I got one-shotted before I could get the shot off.

so help me out. What am I doing wrong, what can I do better?

I think next time, I might try going up into the Mountains like a Sniper and taking my shots from there.

It's generally not going to go well for you if you try to use a forge gun on as mobile a target as that. Forge guns are better used against things like tanks and LAV's due to ground restrictions and an easier target. Dropships are designed to be mobile, so putting a beam onto one accurately is going to be nigh impossible. Swarm launchers are your best bet against dropships, and even then only if you have a lot of skills trained for it. Because AV's builds have no real ground weaponry, they are not advisable to use. I would wait to use a specialist build until you have a lot of SP sunk into it. Also, the reason AV's are suicide is that they are not designed for the type of maps that are in dust right now. AVs are best for an attack/defend map where they are used defensively against vehicles while being under protection themselves. Right now they are no use in major battles.

swarms? That was a good joke. Before you take down a good dropship pilot with a swarm launcher, tanks will get wings and start flying around the map. Lav's extend your lifetime only by a little bit simply cause a very good dropship (mine) only needs 2 hits and any LAV is going to blow up. Normal infantry die allready from the splash damage and heavys take 2 hits from splash damage and only 1 if its a direct impact. Well i tell you now what target priority a pilot is giving out to his gunner:

-Forgegunners
-Dropships
-Tanks
-LAV
-Swarm launchers
-Normal infantry

In this order and no way else. Forgegunners are the most important target cause they can shot down dropships extreme fast.

having multiple forge gunners.
if there is a single forge gunner. you will do diddly to a skilled dropship.

and waiting for the ship to lag is the most effective way to deal with dropships.

You'd have to go to the future first, where gunships exist. I think you mean dropships.