Your training courses may be relevant to a court if you are ever involved in an incident of self-defense. Keep a training record.
Do you have a training resume? Gun Digest published the first article on Self-Defense Law: Do You Have a Training Resume?

Twin 30BR Score Rifles play Sunday GunDay: Thunder Down Under.
March 16th, 2025 Sunday GunDay: Thunder Down-Under — Twin 30BR Score Rifles This story, from our Gun of the Week Archives, offers a good intro to the 30 BR cartridge,