Since purchasing my 10-22 near the end of january I've taken it out twice.. once in -28 weather right out of the box I put over 1000 rounds through it using mostly butler creek mags with only a couple malfunctions due to trying to run the mags clipped together I found it pulled them apart.. And earlier this week I went out in -2 weather and shot 1500 rounds without a single jam, stovepipe, FTE, FTF, Double feed, anything.. The first 1000 I put through were federal bulk, some cci and some winchester wildcat.. The 1500 from the other day were exclusively blazer bulk.. Just make sure you strip, clean and lightly oil your 10-22 and ensure the mag is properly seated at all times and you should be golden.