By the way I am having the same problem with my Beretta AS-20-E, which I, miraculously, learnt to shoot. (Thank you Bill!).
I.e., it is hard to open after firing both barrels. No lines on the spent shells either.

JC

Last edited by JayCee; 05/19/22 10:01 PM.

"...it is always advisable to perceive clearly our ignorance."ť Charles Darwin