I have a 12 ga 1200 (same gun as a 1300) i bought new in 1974, for the princely sum of $79.99. It was my only shotgun for several years, and i put 3000 rounds through it the first year - i was a duck hunting fanatic back then. It has roughly 15,000 rounds through it since and has never broke, misfed or malfunctioned. It has a bit of the blueing worn at handling points but could nearly pass for new.
I have a model 1300 20 gauge that has about 5000 rounds through it. Have taught 3 kids wingshooting on it, hunting and at the range. Never malfunctioned, still tight as new.
I have a 1200 that i bought used and cut down to 20" bbl. I have put a few thousand rounds through it, mostly slugs and buckshot, and i don't know how many rounds it saw before i got it. Guess what? - no malfunctions, no problems, still tight.
I have owned and shot a lot of different shotguns. The 1200/1300 is one of my favourites.
IMO a 1300 is as solid and reliable as the rem 870 wingmaster, and better than a 870 express and all the mossbergs, except the 590. And my opinion comes from actual use and real experience - i didn't just form an opnion based on crap i read on the internet.

