My brother works for a company that repairs aircraft, and he calls me up today, to see if I want to shoot at this windsheild out of a jet. All his coworkers said their was no way anything could shoot through this 1 1/2" thick lexan windshield. After the first shot with a 22 Hornet, it looked like the plastic was bulletproof, I was impressed! I than shot my 7x57 Mauser, no problem going through. 270 Win, no problem. 22 revolver, no go! 45ACP, no problem either, which surprised me! We had lots of fun blasting away at this big dollar target!