I have a Marlin 1894c...early 1980's vintage. Does anyone know how long I can leave my rifle fully loaded? I usually load it with 38 special +P 147 gr JHP's...10 in the tube, then leave it like that as my go to house gun. I am concerned that the magazine tube spring can be adversly effected over time, and also that the bullets, under pressure, may be pushed back into their cases (which could cause pressure problems).