I am interested in purchasing a M3 177, but I prefer to shoot slugs mainly because of wind effects. Nsa has three different 177 slugs, and I have great luck with the the 12.5 and 15gr with my pulsar. Nsa now has a 20.5 177 and my pulsar doesn’t have the power but I believe that the M3 will, very interested in the results if you choose to try them! Have fun with your M3 and I’ll be waiting for results good luck