Aftermarket chokes

[hnachaj]

Here is a little article on my personal experience and tests: http://internationalsportingclays.com/2013/06/aftermarket-chokes-by-henry-sf-nachaj/

Here it is on The Firearm Blog with pictures of the two patterns: http://www.thefirearmblog.com/blog/2013/06/23/aftermarket-chokes/
Regards,
Henry