A thorough cleaning is in order! Especially the carbon ring at the end of the chamber. Also after cleaning make a note of how many rounds it takes to foul the barrel. Shoot the number at every range session. I usually make a note in my reloading notes on number of foulers for each chamber. Expanded case heads lead to excessive gun handling and in turn inconsistent groups in a competitive situation.Thanks all for all the tips. I will do another session with now fireformed brass and report the results. Do you recommend cleaning the barrel, leave it, or just clean the carbon with C4? The barrel has about 100rds so far.
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