Carlsons .575 flush chokes

[BowBendr]

I searched this but didn't find much.
Has anybody shot the $18 Carlsons .575 flush choke in their 21" Remington 870 ?
Shooting HW 7's....Wha'd you get ?

[surehuntsalot]

I have a .575 Carlson extended tube in my 21" 870 youth and it love the 7's and 6's

[Matt.Wilson]

I have the Benelli Mobil Choke .575 flush with the HeavyWeights...It loves 'em.  7's