Last gun I bought prior to having to fill out a Form 4472 or whatever the number was under the new '68 Gun Control was a Richland 707 in 3" 20 gauge. I had read several articles by Sell & believe I may have that 77 one you mention. Mine had 28" barrels with M/F chokes. My Son still has it.
I did change the recoil pad on it. The one it came with was so soft firing it was about like holding it off your shoulder & giving it Jumping Room to Stomp you. It had 28" barrels choked M/F & weighed 6� lbs. After putting on the firmer pad I could shoot the full power 3" loads with reasonable comfort. Before that it had been a brute even with mild field loads. Killed my first Goose with it using a 1� oz load of #4, a young Blue.
