Here's your answer - if in fact that is what your choke is ...from their website.....
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http://www.kicks-ind.com/mm5/merchan...ode=BuckKicker
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Designed to control (10,12 and 20 gauge) buckshot loads with more consistency than ever before.
"BuckKicker"chokes are available in three constrictions to accommodate buckshot sizes from.000 to #4 buck.
Chokes are manufactured from 17-4PH stainless steel and come with a matte-black finish.
"BuckKicker" chokes are available for most 10,12 and 20 gauge models. "BuckKicker" chokes can also be used
for upland game whenever a full choke is desired.
Not for use with steel shot. With the right match of choke to your gun, consistent patterns inside a 20" circle
at 40 yards can be achieved.
Light Full–000 Buckshot
Full–Best all-around 00 Buckshot
Xfull–2 3/4 or 3" 00 Buckshot–#1 & #4 Buckshot
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I have no personal experience with the company ...but it was easy to find with a search...