Guys, I usually just use fired cases in my guns for dry firing although snap caps are probably best. Dry firing covers all the basic elements of marksmanship training without the distraction of recoil. It?s also a great way to cure a flinch.
Being old school I grew up shooting iron sights on a B.B. gun and a 22 Rimfire single shot rifle. I knew how to shoot long before I used a scope. Same for my early handgun development. With the exception of hunting, most of my training and competition shooting (IHMSA silhouette, NRA bullseye, and steel plate / bowling pins) was done with iron sights. Good luck to you all. Investing in your skills with training and practice always benefits.
"Therefore go and make disciples of all nations,... "
Handgun hunter since 1979 - haven't used a rifle since!
HHI member #992, NRA, SCI.