You should head over to Rimfire Central's Marlin forums
, a lot of very helpful information on the Marlin rifles and a couple of threads on bedding the tube feed rifles. Also a great group of guys and gals to work with.
With a little trigger work, a lot of practice and target grade ammunition it's not uncommon to get 1/2 - 3/4" groups at 100 yards from a bench and bag rest. Weather permitting of course.
I opted for the Rifle Basix trigger on my 917V, but the trigger information at Rimfire Central can get pull eight down without the $90 price tag of the Jard or Rifle Basix triggers.