I've had 2 Moody .25 cal barrels. Both are tack drivers. One is a straight 3 quarter inch barrel. And the other is a 3 quarter to 5 eighths inch tapered barrel. That one is my squirrel slayer. Nice and light weight. I think the barrel on the gun you have was part of the package that mr. Moody needed to justify tooling up for that job. He needed an order of at least 10 barrels so a bunch of us put in orders.
I'm sure you'll be happy with it. I use 15 grs. of 3f, a .240 #4 buckshot, and that purty flower ticking. Have fun.
Cal