If you’re using Remington ammo, it’s notorious for having ’loose’ bullets that might cause feeding issues. The manual even recommends not using this brand of ammo. Your mileage may vary however. Also, when using 25 rounders, make sure the rounds are staggered. I’ve hand loaded mags where they aren’t perfectly staggered but never had an issue (typically). A loader may be helpful in this regard.
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