Some gems from the "Damage Threshold" fallout wiki page.

[ThatZenoGuy]

Now I love Bethesda to death, but I must say DT is a more accurate model of armor than DR is. Beth put it in FO3 because it already existed in TES:IV (and the cap was 85% believe it or not). The only problem I have is this. Hollow points are just about useless against most everything. It bugs me. Now I understand how insects and arachnids like scorpions and ants and shit have that whole "exoskeleton" thing going on, so they are somewhat hardened against puny rounds... but deathclaws? Come on. Deathclaws are big and strong and evil but they're soft. Any soft target, i.e. a human/ghoul wearing civilian clothes or a big muscly deathclaw should have a very low DT and so I should be able to use hollow points against meaty targets without fear. I don't give a shit about "thick hides." Grumble. --Jackarunda 20:48, November 29, 2010 (UTC)

Personally I hate DT because it renders automatic weapons like the Gatling laser weak as shit, but ant's have no DT so hollow-points should work fine. As for the Deathclaws their DT is what makes them dangerous and they aren't natural (not even radioactive natural) the U.S Military created by genetic engineering a bunch of different species for combat situations so it makes sense that they would have some kind of hardened shell to protect them in dangerous situations. --1stRecon 01:23, November 30, 2010 (UTC)

Obvious that neither have actually played Fallout 1-2, or NV...Deathclaws are armoured, as are "Tough" giant ants in fallout 2 (resistance against laser, and threshold against explosives).

I find it amusing with the "Muh high fire rate low damage weapon does nothing to armoured targets, waaaaaaa" comment, its almost as if armour works differently on different weapons, and DR isn't an actual standalone armour mechanic.

 

[vitekc45c]

Correct me if Im wrong but i recal it being posible to use optimised (or max charge) EC and efectively ignore the DT of anything.
Or just use turbo and spam left click with All american.

 

[ThatZenoGuy]

Correct me if Im wrong but i recal it being posible to use optimised (or max charge) EC and efectively ignore the DT of anything.
Or just use turbo and spam left click with All american.

Gatling laser does low damage, but good ammo can help, yep.

Still best to use something like a gauss rifle or tesla cannon against hardened targets though.