Non-buffered, non-plated, soft lead shot. It is fine for training, practice and plinking but there are better choices for HD or hunting. With the rolled-crimp, the overall length of the loaded shell is probably a little longer than a star-crimped shell. This may or may not affect you magazine capacity and it may or may not work in a Saiga box/drum mag. I am not sure if this load will cycle a semi-auto. Don't pay more than ~$0.50 per round out-the-door.
ETA- with a muzzle velocity of 1325fps, this should cycle in a semi-auto.