Difficulty improving without autocast on E. Hi,

I've been playing a lot of gangplank recently and I have found too much difficulty using my barrels without autocast that I end up just turning it on every time I play this champ.

Is it fine if I don't use it? I seem to get mixed opinions but I see most people use it without autocast and I feel like that's a sign for sure. I preform very well with it on, and very poorly without it. I just can't really memorize the ranges I suppose.

Any advice will be welcomed.
