The entry form for the Peveril Easter Shoot is below. The form also contains the schedule for the competitions. Entries mut be in by 4th April.
If you are coming from outside of the Isle of Man and want to bring your own firearm, the deadline to apply for a temporary permit is 11th March. Remember, airguns and shotguns need a different permit to firearms. More information can be found here https://www.iompolice.im/apply-for/firearms-and-regulated-weapons-certificate/