Guys, I have got a couple answers on this so I'm leaning to the guys that may have one here.  This is a gun I bought for the grandkids and I wanted to get a turkey choke , maybe pure gold or Jeds something in that field, but am having a aweful time getting the thread brand.   
Any help ?  
			
			
			
				Get you a non-ported H S Strut .. undertaker choke tube. 
			
			
			
				It uses the Invector threaded tubes. 
Depending on what you want to shoot in it ,but I would not choke it real hard for a youth shooter.
			
			
			
				I have a non-ported undertaker in both my 20 and the gun my son uses, I get good patterns with blue box federals, I  do however get better patterns with a modified choke and federal premium with the flight control wads, at least until the make longbeard xr's for the 20. LOL
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				Quote from: Jmbradt3873 on August 03, 2016, 10:41:52 AM
I have a non-ported undertaker in both my 20 and the gun my son uses, I get good patterns with blue box federals, I  do however get better patterns with a modified choke and federal premium with the flight control wads, at least until the make longbeard xr's for the 20. LOL
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Are they going to? Do you know something? Don't go toying with people's emotions here man!  ;D
I'd spoken to a Winchester rep a while back. He said they had no plans to make it in 20 gauge but only the future would tell. 
			
 
			
			
				Quote from: Greg Massey on July 31, 2016, 07:21:56 PM
Get you a non-ported H S Strut .. undertaker choke tube. My 500 loves this choke with federal hw7s. I 
			 
			
			
				Carlson 575 extended invector 
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				Just make sure you get Invector and not Invector +.
			
			
			
				Pure gold .570.  Invector as said above. 
WIN choke is same as Invector.  DO NOT USE INVECTOR PLUS!!!!
****Link with lot of info on choke fit / interchange, ect. ***** 
http://www.choketube.com/choke-tube-interchange-guide.php