I have a Remington 870 Super Mag and have been looking at a Gobblin Thunder choke for it. Anyone recommend a certain size? I shoot Winchester Supreme's 3 1/2 in5 shot and I know the site recommends a .665 but several people have told me different (.660 or .670). Anyone know anything from experience?
Thanks

Just remember that the tube is for lead shot only.

Im shooting a Kicks Gobblin Thunder in my Stoeger and love it, its a .665 Im pretty sure, and I shoot lead5s out of it with great results.

i shoot the thunder out of my moss. 500 with win. extended range 5's 3in and i love it

By the wat the extended range are harder then lead but softer then hevi shot I called kicks and they said that load is ok and they aslo told me that the win. loads seem to pattern better then others

I shoot the .665 on my SBE II and it likes the 3" #6 Win XR

#5 winchester x-range

Are the Winchester Supreme x-tended range shells worth the extra money??? I have heard both ways from a lot of different people. Some have even said to shoot the 3 in shells instead of the 3 1/2 with the X-tended, that they pattern tighter. Any advice??????