I took out my new Pattermaster 870 choke to see how it patterns and groups.
I was shooting basic 7.5 shot and some 9 pellet Buckshot with my 18.5", 8 shot Magpul 870.
To my surprise, the birdshot pattern stayed tight, probably a foot wide at 25 yds, and opening up close to two feet wide at 35-40 yds.
The Buckshot offered patterns at 40 yrds you'd expect with an open cylinder.
https://www.patternmaster.com/products/1048_12ga_Remington_Classic


I was shooting basic 7.5 shot and some 9 pellet Buckshot with my 18.5", 8 shot Magpul 870.
To my surprise, the birdshot pattern stayed tight, probably a foot wide at 25 yds, and opening up close to two feet wide at 35-40 yds.
The Buckshot offered patterns at 40 yrds you'd expect with an open cylinder.
https://www.patternmaster.com/products/1048_12ga_Remington_Classic




















































