Sexing BP's

How much should your BP weigh before probing to check the sex? I checked by popping but want to confirm my results.

My vet probed my first when she was 121g

Babies are easy to pop since they don't know yet how to control their snake parts. As they get older males can hold their male parts in, so it's easier to probe them.

But at any age either can be popped or probed.