I have a Colt vest pocket that I shoot every now and then. Never had a malfunction except when trying to shoo the Blazer aluminum cased ammo.
Everything else has run fine. I shot a box of 35 grain HP;s and they run perfectly. Just don't like the aluminum cased stuff. It is accurate out to about 7 yards or so. Not to bad for a 95 year old gun. I love it.
Peace,
Gordon