None of the stock indirect-fire should be able to engage targets past 80 in-game meters for the five faction, even with veterancy outside of their barrages. There should be some control for the further engagement ranges.
If you're all fearful of the pit being rendered useless, shorten the barrage cooldown so you have to micro it to actually do damage and clear position. Do this and fixing the fact its second mortar does less damage while barraging and it should be able to still hold back other indirect-fire assets early on. It'll probably do it better if the barrage cooled down faster allowing players who micro the pit to be rewarded more than those who simply toss it down at let it auto-fire for 115m.
Thank you miragefla, i completely agree with you, the sad part is that this mortar barrage shoots non stop the cooldown time is way too low, it keeps shooting like a canon, and 2 mortars shells at a time is too much especially when your healing in the base and theres no where to run.