Picker Problem - Data Disappears

[Slink]

A user pointed out that he would enter the number of rounds fired and
then he would have to do it again. I believe it to be a picker
problem. There is an easy work around. Just dismiss the picker,
keyboard, or keypad before tapping the next field.

Here is a detailed explanation and work around:
http://gunlogapp.blogspot.com/2011/06/picker-problem.html