What String gauge should i use for my 5 string

Can you be a little more specific? What exactly do you mean by "drop C#" and "Drop B" on a 5-string?

 

Yes, 'drop' is used for 2 different types of tuning, and we don't know if you're tuning the top 4 or all 5 to these tunings.
Please state every tuning you use, for each tuning state the open note of every string.

 

If OP was referring to C#-G#-C#-F#-B tuning and B-F#-B-E-A tuning, then probably 120-90-70-50-30 could be used for both tunings.

 

I'm sorry. We can't help you unless we have determined if your bass is actually good for metal.
We don't want to break TalkBass, after all.

 

I have basically the same question as the OP. I'm using an LTD B5 five string, recently acquired. It has a ton of features for the money, but I think it sounds a bit sterile. I'll mostly be using it in a variety of lower tunings, from Eb standard to ADGCF. Finding a set of strings that wont clack against the frets the while time is key, and it can be hard to prevent when playing fingerstlye at speed.

 

Thorny1 same request, please state all the tunings you want to use in full.
Eb standard on 5 string can be several different tunings, i assume you mean Bb Eb Ab Db Gb?

A .145 is needed for a well tensioned A, that may look big but has similar tension to a .110 D or .095 E.
Then add a slightly heavier than normal 4 string set for Eb Ab Db Gb and DGCF.

 

I dont need the B string (right now) on any songs I expect to play live, although I have used it tuned to B and A in the past. (Korn and old Incubus tunes).

I currently expect to play the 5er live tuned DGCF and CGCF...the low B isnt required for the material I'm performing right now, although obviously I still need it to function and sound well.

I only own 2 basses, and I need to dedicate the 5er to lower tunings, since my 4 string is already spoken for. I typically play the 4 in EADG or DADG.