this is 10.795 cm x 6.35 cm.
if they are a little off then that should be ok.
you should be able to print them off fine on a 3x5 card
borders for all new color cards have been fixed to left top right at 1/4 inch (0.635 centimeter) and bottom to 1/2 inch (1.27 centimeter) for printing ease.
most of the cards already have a bottom art piece to ensure height except for the tactics cards. what i have done is add a small dot in the bottom right corner of the tactics cards. this is supposed to be there.
note: if you find your printer is CHOPPING OFF the top portion of the card, try printing the card UPSIDE DOWN. if you are still having issues printing, tell the printer to shrink to fit. that always helps me out.