What's the rifle equivalent of GSSF?

I don’t mean: Which rifle manufacturer holds almost 30 matches around the country and gives away 217 plaques, 253 guns and over $80,000 each year. What I mean is: Which rifle event is easy for beginners, has low equipment requirements and is a low-key match suitable for kids & wives??

These are the events that are held at the local range. It doesn’t have to be on this list but they're the closest:
High Power Rifle
Smallbore Rifle Silhouette
IR 50/50 Benchrest Rimfire
Blackpowder Cartridge Rifle Silhouette
High Power Rifle Silhouette
Blackpowder (Rifle & Pistol)
22 Rimfire Plinking Shoot
Mini Palma - Smallbore