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300 Blackout getting stuck in the chamber

159 Views 2 Replies 2 Participants Last post by  jerold222
I've got a radical firearms in 300 blackout. Unfired rounds are getting stuck in the chamber and are really hard to extract. But ONLY when loaded from a magazine. If I load a round into the chamber manually and send the bolt home... no problem.

Slide a round into the chamber then turn the barrel up, round falls free instantly.

If I load a magazine and send the bolt home loading a round in the chamber, that's when it gets stuck. With or without the magazine, it's still dang near impossible to extract.

I tried a different, known good BCG, and it was still almost impossible to extract.

I honed and polished the chamber. Still nada.

I tried with and without the o ring in the extractor. Same result.

Type of magazine doesn't change the result either.

I'm scratching my bald head over this one...

Any help is greatly appreciated.
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I should also mention, that sometimes the round chambers but the bolt doesn't go "all the way" home and stops just short.
If you bought this new, I would contact Radical Firearms. They offer a lifetime warranty.
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