I've made snags for many years but always with natural casings. I thought I would try some 30mm synthetic ones, so just ground up and spiced 5kg of pork and stuffed half a metre of casing and threw straight onto the barbeque to check the spice balance. Well, the bloody things split in about two seconds, so do I dash out tomorrow and go natural or is there a trick to these things. The synthetic stuff seems very easy to use and you just store in the cupboard so I would be keen on persevering with them.