Skeeters tend to use as wide a variety of tools as trapshooters or even those evil Sporting Clay Yuppies do.
Local legends here use lots of Berreta and Browning O/Us, with tubes and custom bbl and stock work, or Berreta and Remington autoloaders. A few Perazzis, Ljutics and Kolars show up als
ne sees few Rugers,Weatherby, or Remington O/Us.
Lots of the above sport ports, though why someone needs recoil relief shooting 1 oz loads from an 8 lb shotgun with excellent fit and a good pad surpasseth my ken. I do know these add lots of blast and noise on the line.
Re backboring, quite a few of these have it, tho sometimes it seems like a case of "Mine is bigger than yours" rather than a quest for better patterns and kick relief.Most have long forcing cones.
Chokes run very open, from negative -.005 to maybe IC. Custom chokes, also oft ported, are common. Shots in Skeet are close.Most skeet guns run a little lighter than trap guns, shoot flat rather than high, balance more between the hands, and work better for Sporting Clays than trap guns will.