The fellow in the video said that he has found that Crosman guns like Crosman ammo. Not surprising. I am sure that Crosman engineers fire 10-100's of thousands of Crosman ammo during development. I have used a bunch of different ammo, but found good ol' Crosman Premier ammo to be very happy in Crosman guns. Not sexy, but it gets it done most of the time. that said, I still have a lot to learn. I am going to try to establish a good all around ammo for each gun, then work outside that tin (pun intended) to find "specialty" ammo for say, hunting various types of critters. Question, Polymags look evil, but are they. The Marauder's just seems to bring out the best in most ammo. This fellow (in another video) said that his Marauder was the only thing he had that shot Polymags well; and, further, they were outstanding in the MRod.I am going to watch more of his vids. He has a good, intelligent, common sense approach (in my opinion).YM