No the sabot is not a good idea. You want nothing in the barrel. Over the end of the barrel is a different story. Finger cots (get the extra large), handi wrap and a rubber band, electrical tape and a rubber band, condoms, even a plastic sandwich baggie and a rubber band will work. As long as you can see your sights or through your scope and it is tight against the muzzle. When you shoot it will be blown off or through.