Purchased bulk m193 bullets online, now I am looking for a reliable and safe source of reloading data for these bullets in LC brass.
(I am not looking for people's personal recipes, but more like commercial data that is available for use.)
I've searched AR15.com, and googled, but not much luck.
Can anyone steer me to safe data please?

Reloading Data link

Have you tried any of the dozen common reloading manuals?

I mean really, if you can't find safe reloading data on a 55gr FMJ/BT in a 223 case, you must be living in a cave.

Buy a couple of manuals and read them.

Chris

buy a reloading book, they are cheap

Maybe I should have phrased the question differently.
I should have asked : Can I use 55g FMJBT reloading data interchangeably among different manufacturers, assuming I start low and work my way up?

I have all the major reloading manuals, but different COALs are listed for what appear to be similar bullets (2.200" vs. 2.250").
I'm just getting started reloading. Have read ABCS, Hornady, Speer, Sierra, Lyman manuals, watched RCBS video and YouTube videos, but sometimes there seems to be no substitute for experience....and just trying to stay safe.

Thanks for replies so far

You may be overthinking this a bit.  55 fmjbt bullets are made specifically for 223/5.56 cases.  They should be seated to approx mid-canelure.

ETA:  Just for grins I just took a half assed measurement of a Hornady 55fmjbt vs a no-name "nato spec" 55 fmjbt.  As it happens the "nato spec" bullet had the canelure farther back on the bullet by .050".  This explains the difference you are seeing in reported COAL.  Not all manufacturers are putting the canelure in exactly the same place as each other.