It's a Marlin 1895 straight stock no cross bolt safety model made in 1978 with micro-groove rifling.The OAL for the 300gr Hornady load is 2.55" haven't chronied it yet but somewhere around 1800fps.Pleasant to shoot and accurate.I'm going to work on a 350gr Hornady moose/elk/bear load and have a 405gr RCBS GC mold as well.With micro-groove barrels they need to be cast 2/1000" over bore size and hard like wheel weights....some water quelch them to harden more..............Harold