You already have the best magazine made, one of the "fxo" Schmeisser milled magazines.
The most likely cause of the issue you're experiencing is either the ammunition you're using, or the grip support you're giving the firearm during the firing cycle.
Try using standard velocity 115gn or 124gn ammunition in this Luger. It's possible that it could also have an incorrect recoil spring installed. See our LugerForum FAQ document for details on this.
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 Igitur si vis pacem, para bellum -
- Therefore if you want peace, prepare for war.
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