Daryl, I have shot these through a friend's William Evans paradox last week and finally got it to regulate, I'll post pictures later in the day. The final load was doing 1065fps over the chrony and at 40yds the group is very comforting! Also, some of the recovered slugs from the sand bank that I was using as backstop showed good expansion and weight retained was consistently between 642-646grs. Just for kicks, I loaded one the slugs the other way around i.e hollow-base up and the expansion was a real eye-opener!! Btw, the Shaw barrels have a 1:28" twist.