I bought this No.5 MK1 last week and it arrived yesterday. So today I took it to the range to see how it shoots and after I fire two test shots I found that upon examination of the brass I see what appears to be a head space issue. My question is, if my assumption is correct and it is head space and not a worn out chamber would I be able to swap out the No.0 bolt head currently on it with a No.4Mk1 No.1 or No.2 Bolt head to remedy the issue?



First test shot


Second test shot
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