I like sizing up multiple times during veg. 250ml, 700ml, 2000ml, 3 gallon. I let the plants roots fill the pot but not root bound, then I always transplant on there dry cycle so the roots don’t have to hold as much weight . Went u transplant, fill the new pot with medium and a pot of the same size as the transplant at the desired depth, then removed, now there’s a perfect hole ready , less stress. I’m very big on target practice From March - August I shoot at lease 50 rounds a month out of my rig. Countless rim fires . Blow that shit up . But clean up after yourself, nothing worse then going into the bush n seeing garbage all shot up, gives hunters a bad name.