Well, it's frickin' DYNAMITE.
Here are some general tips: If you want to deal with radscorpions, you NEED armor-piercing ammo (or a flamethrower, but that's not very effective). They have unbefrickin'lievably high damage threshold, so pretty much anything else will do like 1 damage per shot. Explosives -might- work, as well.
Hollow point ammo are also good to keep around, if you run into big low-DT targets. But it's not nearly as effective. I only use them against nightkin, as those guys have insane HP, like no DT and do enough damage to need to go down very quickly.
Melee damage seems to wreck armor very quickly, so it's a good idea to stay away from melee opponents if you want your armor to stay in one piece.
As well as the visible land mines, there are now barely visible concealed mines.