Is it correct grammar to say try and do something?

It's not technically grammatically correct to say "try and do something". The correct phrase is "try to do something".

Here's why:

* "Try" is a verb that already implies effort.

* "And" implies a separate action.

Therefore, "try and do something" suggests you're trying *one thing* and then separately *doing another thing*.

Example:

* Incorrect: I'll try and finish my homework before dinner.

* Correct: I'll try to finish my homework before dinner.

While "try and" is common in casual speech, it's considered more formal and grammatically correct to use "try to".