I gave the insert to a friend to test for me along with 3 standard length 38 Specials and 3 shortened 38 specials, Each was loaded with 180 gr Hornady bullets, 10 gr of 2400, with bullets seated out to 357 maximum length so the bullet would not have to jump to the rifling. All 6 cases could be easily removed with a fingernail. Accuracy was not so good. He described it as a "shotgunish." I'll try some other loads when I have time.