Dunno.

I can tell you the 410/K20 is a delight to shoot. Mine is 30" mostly because the 20ga barrels are 30" and it came with a 30" two barrel case. I've shot the 32" and it's a tossup. Either is fine.

Sources indicate the 410 responds well to forcing cone polishing to bring in flyers, or at least 410 tubes do. I've not tried it myself.

I have noticed that jazzing up the muzzle velocity a bit makes for deader clays. I use #9 at about 1330 fps.

Addicting gauge.

"The price of good shotgunnery is constant practice" - Fred Kimble