TopGun,
Yes that is the same one when I bought it online at cabelas it said it would fit a Win/Remington 12GA and it said .660 was recommended when I stick it in the tube it doesnt even reach the threats becuase the outter top metal contacts the barrel on the outside.
I know this sounds crazy but I could of bought the wrong choke tube but I just find it strange that when I look it up online it still says it fits a Win/Mossberg500/Rem is what the description says or it could have been a error on there part.
It seems to skinny it needs to be fatter inside and maybe longer becuase as I said you can drop it right in and the outter park of the choke tube hits the barrel and it just spins. I noticed online Primos is selling a newer version of the Jelly Head and it says a Remington is recommended at .665