I have the BE in 9mm, and I love it!
Anyways... I have only shot WWB and a few Blazers thru it... They are 115 gr rounds(I think) and they seem to feed good and are somewhat accurate(may be myself learning the weapon).. I also have some WinClean rounds and rem HP that I haven't tried yet..
BTW.. I would just buy and try to see what you and your gun like!!