My experience tells me (at least relative to Rem 870 and Mossberg 500 series) that a pump shotgun with a tubular magazine can be left fully loaded for extended periods of time.
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<br>When an active deputy I had an 870 with a 4-shot tube that I keep loaded year round and only unloaded it twice per years when we qualified with shotguns.
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<br>Up until I got my Doube Action Mossberg, I kept an 870 with extended mag fully loaded for years on end and it always worked.
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<br>I've had the Mossberg for a couple of years now and it is fully loaded (in my safe of course). I shoot it about once per month and have had no issues relative to the fully loaded tube.
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<br>However, I wonder if there is a recommended magazine spring change frequency for Rem, Moss, and other shotguns with tubular mags.
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<br>Thanks, Norm
