Thank you for your input, it was a problem of faulty technique - my hands were/are a bit too fast compared to the rest of the body. I had a coach take a look at my form and, well, I need to work on and improve my form, that is ...actively "catch" the bar with my delts/clavicles. So even less smartypants, more humbleness and less weight, even more practise.
I keep practising and let you know how I fare.
By the way, I am halfway through the book "The System - Soviet Periodization adapted for the American Strength Coach" by Parker, Miller and Panariello, which details planning and programming off-season, transitional and in-season strength training for various american football skills levels and athletes, specifically written for coaches. I like it, and the info can be adjusted to other sports as well. My take away so far is the number of reps that need/should be programmed. Since I do not have the money to have a personal coach year round, and rely on going to a bigbox gym or train at home most of the time, I like reading material like that.