Originally Posted by Jamesy
I've heard/read the same thing, but neither my 77K or 97K barrels have the foresight grooves... all i know is that when i use my VFG cleaning rod with the felt pellets there's a noticeable tightening when the felt nears the end of the barrel, and it's definitely not at the actual crown but someway's inside the barrel. It's the same when pushing a pellet through from the breech with a rod too... So, if it ain't choke, and there's no exterior machining work done to this section of the barrel... what is it?
Snap, my HW98 had was very tight towards the end when using a pull through, no external grooves either.