I use a Undertaker choke tube in my 11-87 .
I used Rem . Hevi Shot loads and got great patterens
I now load my own Hevi shot loads and the patterens are just as great but with a few exrta FPS.
I just looked and there no scratches in the tube ,this year will be the 3 or 4 th year using Hevi Shot for turkeys

Johnch