AT-Rifle too deadly?

[iCaMpWiThAWP]

I recently was playing a battle june 1940, brits delay germans, my AT rifles where real deadly, about 10 panzers destroyed by at rifles, and i just thought, shouldnt at rifle be more damaging than "killing" the vehicles, IIRC, theyr effect was little on armor, maybe killing the engine, a crew member, damaging something, but rendering a tank ineffective with a single shot is quite unfair, can its kill-ness be reduced?