If you really want to test how far you can throw it go to 'The Castle' on a clear night (Night is important) Stand by the truck next to the building where you first test the artillery smoke. So Try this if you like 'Artillery Smoke Grenade Fix', I have done very little testing on it and it only changes the one timer. This effectively doubled the range of the Artillery smoke and you could still see where it landed.

I tested the Artillery smoke Grenade with the same stats as the Frag Grenade and the big issue was sometimes it would go to far and you couldn't even see the smoke or where it landed. (Many times it just explodes in mid air still on the way up then drops right where ever it is in the arch) This means if you try to throw one at a high arch to get it to go further you really are shortening the range because of the time it takes for it to go up before coming down to explode. When the smoke explosion happens the grenade stops moving forward and fall straight to the ground. This issue here isn't so much the range of the Artillery Smoke Grenade, It's really the timer until the Smoke explosion goes off.

I was working on my explosives mod 'The Mad Bomber's workshop' and thought I'd have a look at this, I really haven't tried to use the Artillery smoke much while playing but I was thinking about making a Smoke or Gas Grenade for 'The Mad Bomber'.

Fallout 4 artillery range mod