An older NRA Dope Bag test showed that an 18 inch barrel shoots exactly the same as a longer barrel, with the same choke.
The tests indicated that the choke determines the pattern density, and barrel length has no effect.
In short an 18 inch barrel will shot the same as a 36 inch Goose gun if the choke is the same.
The tests indicated that the choke determines the pattern density, and barrel length has no effect.
In short an 18 inch barrel will shot the same as a 36 inch Goose gun if the choke is the same.