Spotting Anti-Tank Rifles

[bluehand]

I did like to see a listing of the penetrationn abilities of a .50 caliber. they are only slightly smaller than some ATR rounds and do have good enough penetration to bring down an armored airplane. and in the game they seem pretty good at taking out halftracks. I've never tried it on a lightly armored tank.
anybody ever got a kill on a PZ1 or a BT-7 with one?
at close range even with the smaller bullet they should have a chance at the side armor on several tanks.