I need some help with a basic Marauder tune that will get me at least 30 good shots in the 880 fps range with a 16 grain pellet. I've had a couple of gen1 Marauders years ago and was able to get 35 to 40 good shots. 30 shots with an ES of 12 and SD of 3.3. Today I was helping a friend do a basic tune on his new Marauder (unregulated) and was barely able to get 20 shots with 16 grain pellets. The transfer port was set to two turns out and the hammer spring preload was set to 2 1/2 turns out. The average fps was 875 fps. I was only able to get 20 shots before the fps started to drop of sharply. Have they made some kind of drastic changes to the air delivery system or am I missing something. Oh, I left the hammer throw at the factory setting. Any help or suggestions will be greatly appreciated. Thank you.
