I've almost exclusively been using the Federal Gold Medal Ultra Match 40 gr in mine for the past several years, incredibly accurate, will print dime-sized 10 shot groups at 50 yards all day long. Used it on a few raccoons and opossums, countless ground squirrels, and for plinking; but now I'm down to the last few hundred rounds of my stockpile and according to Federal's website they've discontinued this ammunition. What else is everyone using in theirs with similar performance? I've read about great results with Lapua Midas + and Center-X, Eley Tenex, Wolf Match; and several others have also highly regarded the Federal AutoMatch Targets.
Thanks for reading and your input!