Well done sir, well done! A few years ago I damn near stepped on a copperhead in the back yard and blasted it with the .45 HK USP & a Federal Hydra-Shock.
Those are some beautiful serpents....too bad they're poisonous. I let the non-poisonous ones go- but not so much on poisonous. I couldn't stand letting one roam around the house and have it bite someone- especially a kid....
I shot a big one on my front door mat about a year ago with my 22 LR, was a little over two foot long, I'm glad it was daylight when I opened the door to let the dog out.