the 1 second shutter speed is way too slow for handheld.
try increase ISO to 400 or more, that will help a little. but still you need to get some support if no tripod is available. such as something you can lean the camera on. or just squat down and support your arm with your knee.
i used to shoot air rifle and that also requires steady handheld. now i am using some techniques on photo shooting.
stand still and spread legs apart, slighty wider than shoulder length. hold the camera with your left hand with your left elbow pressing at the stomach area. when shooting, keep your left arm as close to your body as possible, that will limit the movement your hand. since the main weight of camera is on your left hand, that will minimise hand shake.
well that's only for when you don't have any other more stable supports, tripod is still the best. i do so when going for street shooting.
hope that helps, =)