10 January 2026

GURPS Gun Stats

I was not getting the, normal, published, numbers for .30-06's range when plugging in the real-world numbers for bullet length.

M2 ball is an inch long.

It doesn't give the correct range until...

I stop rounding to the nearest 0.5 of the length to diameter ratio (LDR) like they say to do...

AND

Increase the bullet length to 1.33 inches.

That gives an LDR of 4.43 instead of the actual, historical, 3.33.

It's still not quite right, but it's WAY closer with 1,100/4,600 instead of 880/3,700.  The official .30-06 numbers are 1,100/4,500.

With this glitch in mind, should I make all other bullets 1/3 longer too? 

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