In all probability, the problem is the fit and relationship of you barrel-notch and extractor "claw".

If your Krag was re-barreled, the notch may not have been shaped correctly or was misaligned and is interfering at the side.

Some pictures to show how things should appear: 1. Cartridge and extractor-engagement. 2. Krag barrel-breech. 3. Cartridge case in chamber.

Study these and compare with yours to see if anything is out of whack.

If you post some pictures, maybe we will spot something.

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