Yes it could. But, is it the source of your problem? Don't know. What is the accuracy and what do you think it should be? Is this a std weight barrel? Are you allowing the barrel to cool between shots? Sounds like it is a new barrel. Have you cleaned the copper out between shooting sessions? It may need to be broken in. Have you fired other heavy calibers with accuracy before? As the recoil increases so does the need for good shooting technique. Have you tried more than one bullet? Some rifless are sensitive to the type and weight of bullet used.
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