i split stones bigger than that for the rnli slipway in Dundee , make sure the grain of the stones running the way u want it split,start it with your chisel put ur plugs in an batter it...... You can hear it [BANNED TEXT] its ready to split that aul guy could do that with his eyes shut and I bet he's stronger than some lads in their 20, never had to split stone to get a terrier out but knowing how to move and handle stone certainly helps