Talk:Weapons/@comment-80.0.79.152-20130415223934/@comment-144.206.186.225-20130416064633

Most weapons seem to have 2.5% crit chance and +50% crit damage. Aside from that look for information on respective weapon's page. There is no table containing all data because it is quite hard to find critical chance.

About mods - not worth it most of the time. Even with 7.5% critical chance (which is quite high) it wouldn't improve your damage tremendously. And most weapons don't have even that kind of chance, making critical chance mods completely useless on them, seeing that critical chance mods amplify exisiting chance rather than add to it, +50% mod gives 5% instead of 2.5%, not 52.5%. There is an exception with stealth based warframes (Loki, Ash) since melee practically always crit from stealth, making +critical damage quite powerfull in some rare cases.