You did OK. The 1200 was the successor to the legendary Model 12, and suffered by comparison. However,with a little TLC and PM, the 1200 is capable of long and reliable service. It IS a fast shucking and well pointing shotgun.
We did have some 1200s in MD's prisons long ago. Under conditions of neglect and skimpy maintainence by lackadaisical and unmotivated personnel, they glitched.
Also, the magazine has a plastic throat known to melt when spritzed by brake cleaner or other solvents. Spares are available from Brownell's.