I bought a used 1100 3inch frame 2 3/4 slug barrel

will shoot 1 time then wont do any thing

if I take the trigger out and put it back in pull back will hit the snap shell

put live round in shoot 1 time take trigger back out put in another round will shoot 1 time

any one have a clue the gun is clean I have no clue

Welcome to the Remington Owners Forum John !!

You may want to slow down and take your time when composing a thread...I had to dissect your first post just to make sense of it...

Sounds like your 1100 needs a trip to a competent gunsmith...or back to the guy who sold it to you.