Just my personal experience. My main clays gun for over 25 years was a Greener mid grade gun. It is a 7 3/4 lb. gun. I used one ounce loads and the only failure was the top lever spring. I made a new top lever spring and it's been holding up for about 15 years. I did remove the ejector works as I believe the ejector mechanism was a probable weak point. I can switch the ejector works in or out in about 10 minutes as needed.

I did just recently switch to a heavy barreled Fox. Number one weight barrels and weighing again 7 3/4 lbs. I switched guns just to shoot something different and so far so good.