Thanks GLS and 2-piper, The first gun that gave me trouble was the Ithaca 37, I looked in the chamber and it was very rough, it looked like someone had reamed the chamber with a corkscrew.
I used a chamber "Flex Hone" to polish it . It looked very much smoother but it still gave me trouble. I put it away and didn't use it for a long while.

Then I got the Remington 31 in 16 gauge and I again had trouble.
Then I thought of the ammo I was using and I tried various brands and I found the old Winchester dove and quail loads worked great in the Remington and so I tried the Ithaca 37 and Eureka! they worked in that gun too.

Now the problem is to find a stash of Winchester dove and quail hulls or find another new shell that will work.
Thanks for the help. Pete