I tested mine out today and I was very impressed.
Winchester AA #8 shot 980fps, winchester 9 pellet 00 1315fps, winchestet 18 pellet 1220fps, and winchester pdx1 1oz slug and 3 00 plated buckshot 1150fps. All ammo cycled easily and ejected like butter.
Accuracy with slugs was good. I managed to hit a paper cat at 50 metres 2 out of 4 times.
I have the all weather model. I was able to do a "like for like" with my old mossberg bolt action shotgun, hence, no pta.
I really liked shooting the slugs with it....all chokes were fine with slugs. However, I will use the most open (improved cylinder) from now on.
The bolt stays open on an empty chamber, which came in handy when I was cleaning it.
I have never shot the lever action version of the adler, but, I did handle one in a shop and it felt terrible. The straight pull doesn't feel anything like the lever. It's smooth and easy to operate.
In short, I would second what "ozzie reviews" said. This is a really good shotgun. It's amazing that they are selling them so cheap.