Both are capable of excellent accuracy, as is 38 Special. The calibre is about 3rd on the list of things needed to put a hole exactly where it's supposed to be. First is the shooter, second the gun, third the calibre. If you're just starting out, it'll be years before calibre is a deciding factor in the accuracy equation - not being rude, shooting a pistol for accuracy is one of the toughest things you can do, and it doesn't come over night. In your position I'd suggest either a 22, or a 9mm - because the reduced costs involved will allow you more trigger time.