Thanks for all the replies. What's everyone's opinion as far as the regulated or non-regulated version of the Marauder? I do mostly target shooting but I do like to occasionally go small game hunting. Is the FPS decrease with the regulated version still enough to hunt squirrels and slightly larger game? If so, what's the max effective range? Also are the newer Crosman barrels accurate enough or is it worth the wait for the Lothar Walther barrel versions to be available. Most places are saying a rough date is November 4th but they say it could be more like the beginning of next year, no guarantees.
I recently read on another forum where a poster was getting 23ish fpe on his 22 factory regulated Marauder, which should be ample for most small game such as rabbit and smaller. That same person was having some accuracy problems, possibly due to velocity drops. I own a gen 2 Mrod non-regulated in 22 with a Crosman barrel and am happy with the accuracy. If I was to do it over though I think I would still get a non-regulated Mrod but would go for the LW barrel and the picatinny scope rail as it is only about an $75 difference over what I paid. To be honest I have my doubts if the LW barrel is any more accurate than the newer Crosmans. If Crosman gets the 22 LW non regulated in stock again you can pick one up for $480 with the AGNATION discount and free shipping if you order on Fridays. They do have the .177 LW version in stock now.
Motorhead, one of the expert Marauder airgun smiths on this board always advises to avoid the Crosman regulator, and get their non-regulated veraion and later add an aftermarket regulator such as a huma if you still see the need. I am happy with my non regulated version, I have it cranked down to just under 20 fpe for field target matches and get about 25 shots within 1% of my highest velocity.