How big is the prey in regards to your snake? You should strive to feed 10-15% of the body weight (So feed a 300g snake a 30g prey aprox.) or feed a prey that is about the same thickness as the thickest part of your snake's body (I've also heard someone on her mention maybe feeding 1.5 the thickness of your snake, but I have not done this). Snake should look thicker after eating, but not like they've swallowed a football lol Hope this helps!
Yep I feed him big enough prey! I'm going to try to start feeding him 1 large mouse and a smaller one