I tried the "X" insert from BPI, and Polywad's post affair, and even some homemade deals using sections of plastic drinking straws, etc. I found that the Polywad insert, along with chilled shot, gave me the best patterns while opening the pattern by about one choke size (possibly a little more), i.e. full to modified. IMO the Polywad insert is easier to load, too.
I have serious doubts that any spreader device can open the pattern much more than that without resulting in blown or do-nut patterns. I'd like to be wrong, tho'.
SRH
