A shooter in our Club also had a cracked frame on his M22 A-1 after many thousands of rounds. S&W replaced the gun.

When I decided to try a M22 I bought a used M22 S-1 which is the steel framed gun that was only produced for a couple of years and then discontinued. It will digest any ammo from Federal bulk to CCI Mini-mags to CCI standard velocity. My S-1 gun looks just like an A-1 model but the frame is approx 5 ounces heavier.

BTW, the -1 refers to a design change that S&W did a decade ago to replace the rear barrel hook that would break off on the original models when the owners disassembled/reassembled their guns.

Cracked frames not withstanding, I believe the S&W Model 22 A-1 is a great value in rimfire pistols.