I have this No4 Mk1 I just picked up. It's a 1944 BSA with a 2-groove barrel. I have some questions about it and a 98 Kragicon I have (I'll post those on the Krag side, if I can find it).

I slugged it with a lead round ball and it is measuring .3076 bore and .3205 groove-to-groove. Is this typical?

Bolt face has a no 3 on it. Is this headspace condition? What's it mean or signify?

Do SMLE's commonly stretch cases? (I had heard case life isn't good with them)

Where can I get cases?

Thanks all,
Ralph Ed
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