Kirst Konversion reloads ?

[Maj.Bull S. Hitter]

I would like to know if anyone reloads .45 Colt for the Kirst Konversion cylinder that come closer to the 1000 fps limit than factory fodder?Most of the "cowboy loads"are pretty wimpy.I would like to stretch things out a bit,but don't have a chrony to work with.I understand most factory rounds are in the 750fps range.I am after something more useful than target loads.