Every time I've had like a wall of barrels set up or just a barrel set up they can just attack it and it'll go down. I know "Use your Q" but I'm usually using that to farm, sadly and it's not always up. It just seems like every time I play GP my barrels are literally the most useless ability in the game because the other team destroys them themselves.
TL:DR I'm looking for advice on how to use GP Barrels
Curious why you don't use your Q since you can still farm and get the bonus from Q with the barrels.
Place 1 barrel near you, and then place 1 barrel near the enemy and shoot it before they destroy it to get the chain explosion, it takes timing when the enemy tries to break it though.
The Q projectile is slower than the attack of any ADC. You have several variants - wait for your initiator/ tank (Amumu, Sej, Bard etc) to CC the enemy team and then chain barrels. Or use unwarded bush or space behind wall to place barrels and chain them when enemies approach. GP is getting worse and worse every patch with constant nerfs.
It's a hard ability to master, it's understandable that you have trouble with it.
It is best effective against groups of enemies. You should wait for your team to engage or get engaged on; at that point you should place a barrel close to you and outside of the enemies' reach. Now you get ready to place another barrel to chain with the first one, once the enemies are grouped, quickly place the barrel under them and shoot the one close to you with your Q. With a bit of practice you should be able to use this to deal quite some damage to groups of enemies.
A couple extre tips: when a fight starts, save your Q to detonate the barrels like I said; also stay back from the fight until the enemies focus your teammates, as you don't want to be close to groups of enemies.
TBH i suck as GP. The reason is that i cannot utilize his barrels. But I've seem GP placing a barrel in the middle of his minion wave, zoning me out of CS. When i got somewhat close to his wave he put a barrel on my head and explode the one in his wave, channeling them. Was pretty annoying, but had its downside - he pushed the wave and gave me easy time CS-ing under turret. I was Irelia this game. In Team fights he was doing something similar, but from what i saw this game it was useful as a counter-engage and not too much as an engage. It's another story of you face a ranged opponent in lane. I personally have never seen a GP who won his lane against a ranged foe, but maybe in higher ELO it is possible.
That was my advise, hope it is somewhat useful.
P.S. Why would one downvote a topic, where a player asks for advise/
