I have a steel plate with twenty five 11mm holes, drilled on the same centres as a regulation 25m airgun paper target. If you shoot through the hole it is the same as scoring a bull with a .177 pellet. Aside the ringing of the steel if hit by a pellet, the paint chips off as a ‘reveal’. A piece of paper behind confirms if the pellet went through, rather than missing the steel completely, or going through another hole. If people are interested I will take it to Denwood for them to have a go.