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?

How Bullet Stability Is influenced by MV and Barrel Twist Rates?
Are you interested in gun restoration? March 14th, 2025 Do you comprehend why shots you fall off or be unstable when they are struck by a twister that is not