I came back to airguns after 40 years of mostly shooting powder burners. I think you will get---- way--- more 'trigger time' in with your Disco than a 336 Marlin. Ammo, evn if you reload, is really pricey these days. My 177 disco gives the same accuarcy at 20 yards as a decent 22 rimfire. 50 yards on a windy day is more challenging. The Disco's lack of recoil and muzzle blast will allow you to develope good shooting form -you can see the pelllet fly to the target when using a scope !!! Enjoy your Disco and I am sure a good deal will come your way on a Marlin in the future. After deer season I have bought used ones very reasonable.