Good Evening,
For the record, I shot 30 rounds in about 45 minutes. At 210lbs plus 42lbs of T-Gewehr, I was able to weather the storm. No burses, no headaches, and my shoulder is fine. Most of the time, I got through 15-20 rounds at the range with no issues. Tired yes, but smiling!!
Maybe 50 years of shooting Milsurps, mostly WWI/II bolt actions, has helped me build-up some "shoulder stamina?" More than likely, just old, dumb, and happy to have the chance to own and shoot a T-Gewehr. Randy