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

[Varyon]

Originally Posted by Anthony

Nominal penetration is listed at 11mm at 45 degrees at 1,000 meters. 11mm is DR 31, increased to about DR 45 for a 45 degree angle, though presumably short range penetration is higher.

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.