I've got a 9" Lone Wolf barrel on my G20SF, for hunting.
Yes, it does look kinda wierd sticking out like that...but it works.
It gives a little more FPS, and it has zero issues with Buffalo Bore loads.
That was before the Gen4 G40MOS came out...that thing has had me drooling
ever since it hit the magazines...but I kept getting distracted by great deals
on other guns for my collection...soooooo....now they've introduced the G5 series,
and of course, it'd now be kinda backwards for me to replace a G20SF with a G40 4th Gen
when there's no telling how wild the 5th Gen will be...so I'm tucking some cash away
and waiting to see what the 5th Gen G40 will look like...
Meanwhile I can whomp hogs with my G20SF and be perfectly happy