Shot placement is important, especially with a squirrel, and anyone who has tried will know fully well they seldom stay still long. If you must use a hollow point, then may I suggest you buy some, any debate about accuracy is somewhat pointless when shooting at just a few inches.
That's what cage combs are for. To ensure that whatever your dispatching in a cage is confined and can't move about. Allowing you to get clear and clean shot placement.