Crit cap is right around 13.4k raw crit rating, for every class. So, yes, it's very doable to reach it. My hunter has had capped crit ever since late RoI, it's quite easy to reach if you have a lot of agility, fate, and base crit rating. With all the new proc items though, there's frankly no point in capping crit without procs up, so probably best to work on other areas. I like to keep mine as high as possible without purposefully putting into it because that means my crit magnitude is quite high and I do more damage overall (even though it's 25% chance to crit, I usually end up with 50-60% crits in real practice). With full raid buffs and procs, I'm close to 16k crit and 50% extra magnitude on top of existing inherit ones, so I regularly hit pretty good numbers.
[center]RIP Character signature generator, June 2013.[/center]
[center]Theiol, Fervar, Turthonn, and Vanka, [i]retired LOTRO[/i]|Croue, Folter, [i]Rift - Shatterbone shard[/i][/center]