Sorry, but: "Uh--duh?" The OWNERS MANUAL that came with my 1911A1-which covers the full-size models, TRP Operator model, V-12, V-16 and Long Slide models, Micro Compact, Ultra Compact, V-10, Compact and Champion CLEARLY states on page 20 under "Unloading":
"NOTICE: The slide of a 1911-A1 pistol should never be relased on an empty chamber; especially one which has had an action job. Releasing the slide on an empty chamber causes damage to the breech face on the barrel and undue stress on all action parts, including the hammer and sear. This will ruin the action job performed on your pistol."
Reading the directions sometimes helps. I paid what I consider a lot of money for my "bottom of the line" SA. I'd pay even more attention to the directions if I paid more. "Accidently, a few times" might be alright, but you have a fine piece of machinery-treat it so. Good luck and enjoy!