I'm having the same problems with mine failing to feed. I was using Black hills 175 and would only feed 1 out of 10 times. Sent gun back with 10 rds and of course no issues. Currently waiting to receive gun back and will try again.
Can anybody guess what happened today when I went to change the batteries on my Kestrel 4500nv??? The raovac batteries have spewed all over the inside of the meter. I have called the manufacture and they have not responed at this time.