charlie brown, I was sighting in my new peep sights today and clocked some of my loads. I am using a 50cal witha 27" barrel. Shooting Hornady Great Plans 410 HBSP, with MMP sub-bases under them. Goex powder. Two shot groups.

80gr FFF 1270 3" and low
90gr FFF 1350 1 1/2"
100gr FFF 1410 1 3/4"
100gr FF 1310 2 1/8"


At 50 yards the 90 and 100 grain loads all group together, 2 and 3F.

Waiting to move out to 100 yards and see what happens with the groups.