In Gurps, how powerful do you need to fight a tank?

[Anthony]

Originally Posted by Varyon

That's right around 13d penetration, and I believe 1,000 meters is within the 1/2D range for a typical .50 Browning rifle, implying SAP (no AD), and thus indicating it would likely splash on the top armor of a tank... but Rupert's quote from HT matches up with it representing the Raufoss Mk211/Mk300 (which apparently were first made in 1981). 14d(2) would call for DR 98 to stop it, corresponding to a flat-on hit to 1.4" (35.5mm) of RHA.

There seems to be a general issue with penetration for most AP rounds, probably because the armor divisor shouldn't be (2).