I tried my Thumler's and pins for the first time tonight. I was happy with the number of cases I could clean at once, but was not overly impressed with the "clean". I did 100 .280 AI cases and only tumbled for 1.25 hours. The outside was amazing and blingy, but the primer pockets did not get as clean as the ultra sonic gets them. The inside of the cases were about as clean as the ultra sonic can get them, but again, it wasn't any where near 100 cases. I think I will try it for 2 hours next time and see how it goes. I didn't have any problem with pins sticking in the case mouth or in the flash hole.