I'd say the meaning they convey is the same, though there is a subtle difference between try something and try something out
1) try something-to do or use something for a short while to discover if it is suitable, successful, enjoyable etc or to taste food or drink to find out if you like it
Ex:It works really well – you should try it.
Would you like to try some crisps?
2)try something out- a phrasal verb:
* to test something such as a method or a piece of equipment to see if it is effective or works properly
Ex: I’m trying out a new computer.
* +on-to practise a skill in order to improve it
She enjoyed trying her French out on her French friends.
So, as you see, "try it "- is a bit more general and "try it out"-is slightly more specific.