Things you can get on a radio mortar systems already mentioned Bradley's M1A2,s 105,s 155,s Apaches.
Worst recoiling military rifle i ever shot Barret .50 followed by Dragunov SVD
Worst recoiling civilian gun I ever shot 20 ga H&R USH with the 1 pound weight rod in the buttstock removed Shooting hastings lasar accurate 410 gr discarding sabot slugs.
But this system right here is awesome Used em mostly on fortified schools house,s in Iraq and fedeyeen tech vehicles with Dshk,s on em in Karbala
Range is further than 2500m.....
All useless skills mostly, from the past.
Any of you shooting the H&R USH in 12 or 20 ga Dont take that weight rod out of the buttstock. Just saying.......