18 June 2026

Default Round

The default .303 Brit round for GURPS: High Tech is the Cartridge S.A. Ball, .303 Inch, Mk VII (c).

This is a 1.1 inch long, 174gr spitzer bullet at 2,440 fps.

Plug that into Gun Stats and it comes very close to what High Tech says for the Short Magazine Lee-Enfield Mk III.

The numbers for Mk I through Mk VI don't match well.

It's interesting to compare the numbers between this and 7x57mm and seeing that GURPS agrees with the Boer out-ranging the Brits.  NEAT! 

Gun Stats says .303 British Mk VII is 6d+2 pi at 870/3,300.  Published was 6d+2 pi, 800/3,300.

7x57mm Mauser from a Mauser 93/95 calculates to 6d+1 pi, 1,150/4,800.

This tastes right from reading period accounts of those shooting at each other. 

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