.303 British cartridge and chamber drawings - CIP standards

[ireload2]

Link to CIP rimmed cartridge drawings.

Information

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[ireload2]

Actually it has all CIP rimmed cartridge and chamber standards.

About half way down the PDF you will find the .303 chamber and cartridge specifications.
Note there is nearly a 7 degree mismatch between the chamber and cartridge. The chamber is also nearly 2mm longer to the cone origin.