Do a search here, you will get a ton of info. The material you mentioned sounds like it will hold up to small center-fires like you mentioned. They will be more durable and safer to the shooter if you keep your targets moving.
Stationary steel targets are more dangerous than moving ones.
Watch your target angle relative to the shooter.
Good info here:
Shooting steel is tons of fun, but there is far more potential for an accident compared to shooting at paper. Do your research.
Un-jacketed ammo is considered the safest to use with steel.