99.2 of Retumbo chrono's 3300 with a 180 Partion in mine. It shoots so well Its the only load I use. I did chrono 180 Accubonds with Retumbo too. I started low and worked up no sign of pressure when I reached 99.2 I chrono'd it 3400+ I'm sure that was over pressure. To get them to shoot good I had to seat them out so far they wouldn't fit in the magizine. When I shortened them up so they would fit they didn't shoot so good. Now I just have the one load. good hunting KH