This might save someone the hassle on experimenting with buckshot chokes in Reming 870’s. We sent some 870 barrels off to Barnhills Gunsmith Shop in Ashland Virginia and requested some chokes that shot Remington 3 inch #4 buck. We didn’t want the forcing cones lengthened or polished. He started at .660 and kept shooting and opening the chokes until he seen the pattern go south. He found that .675 +- .002 was about as good as we were going to get. We had around $100 a choke in them and that was 25 years ago.
