Do you have a spare magazine to try? Are you using a full magazine? Will it load if there's fewer cartridges in the magazine?
I had an older model 110 with a blind mag that quit feeding on me randomly. I took the magazine spring out of the stock and lightly stretched it by hand. I put it back and it's been working since.
You may want to try something similar by taking the bottom off your magazine and stretching the spring like I mentioned above.
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