I recently inherited a model 50 sidewinder 8 shot .22 revolver. Pistol is in excellent condition although i wish it had the walnut grip instead of this plastic crap. It came with 2 different cylinders, one looks like a standard 8 shot .22 and the other is marked .22 magnum, also an 8 shot. My question is, is it safe to fire magnum loads from this revolver? Both cylinders seem to fit gun perfectly but i would rather ask someone who knows before firing magnum loads.