it is normal for a shotgun (mossberg 590 in my case) to #### back after firing an heavy slugs? i was shooting some 1 1/4 oz 3" slugs the other day . branch rest , shooting for 100 meters . the action cocks back on is own on several occasions. but it didnt happen when i shot the same slugs while standing up. the gun is low mileage. i've probably put les than 50 slugs down the pipe and 300 target loads or less with it since new.
Dont think that the action opening on its own when you fire a pump/slide action shotgun is normal.
Mind you I'm dumber than a woodtick and have never owned a Mossberg so other opinions may vary.
Just what you would call such a feature..?
Semi-auto-tactical-slide mayhap???



















































