Typically, with R-1100s, the longer the barrel the smaller the gas vent area. Remington assumed your application and sized the gas vent area accordingly. It's by altering the vent area that Remington tries to regulate the pressure in the 1100 gas works. With a long goose barrel, they assume you'll be using heavy loads. And, with a short Skeet barrel, it's target loads. It's with the imtermediate barrels that functioning can be a craps shoot.
Remington 1100 12-Gauge Gas Vents
Size (inches) / Drill - - - - Length / Model
.073 / #49 x 1 hole - - - - 34" Duck/Goose
.064 / #52 x 1 hole - - - - 30" Magnum
.079 / #47 x 2 holes- - - - 34" Full Trap
.079 / #47 x 2 holes- - - - 30", 28", 26", 22" Field
.086 / #44 x 2 holes- - - - 26" Skeet
.086 / #44 x 2 holes- - - - 26" Compensated