I bought a few boxes of Hevi Metal in 3.5", 1.5oz #3's @ 1550fps to try. After a quick jump shoot at a local pond this morning, my partner and I stopped by my local gun club so I could use the patterning board during daylight hours.
Extended Range Patternmaster choke in my SBE II at 40 yds produced a solid 90 - 95% within the 30" circle. Dispersement was very even.
This past Sat and Sun I used them to put 14 big ducks in the blind and they seemed to hit hard even at the edge of my comfort range.
Patternmaster chokes shoot most loads great but I have run across some of the high speed stuff that shoots splotchy patterns with big gaps. I'm happy with the performance of this stuff. I'd like to find it on sale again.
Just wanted to share.