I'm sure you'll eventually callous and toughen the skin. In the mean time, you can:
A - Drop the weight, stop using straps, and increase your grip strength (my choice). Consider a mixed grip (1 hand pronated, 1 supinated).
Or B - Tough it out, you girl. (just kidding...about the girl part.)
Bear in mind, I'm not playing with 405 on much of anything, but, from where I sit, those are the 2 roads to go with.