The Winchester 1200/1400 series of guns are not well thought of. I am sure you may know someone who has one that had gone 100,000 rounds with no issues, but that is a real rarity. They were the first of the reduced costs Winchesters, and they went too far with the cost cutting measures. The 1400 is long gone, and the 1200 morphed fairly rapidly into the 1300, and then the Speed Pump, and now the SXP. Each iteration has had a few material upgrades.
What could have happened... did.