Hi, I'm new to the forum and have what sounds to me like a stupid question. I've been trading silver futures through Mirus's demo package (NT + Zen-Fire) and have been scalping using limit orders at the current bid and ask prices (or lower/higher. either way.. not in between the spread). The contract's spread is typically one, two, or even three ticks during liquid hours. Today I saw an opportunity while the spread was sort of wide (39.59 bid and 39.605 ask) and decided to put in a buy limit order at 39.595. Surprisingly I was filled quickly. So can I chalk this up to simulator behavior or is it common to get filled between the bid and the ask? Thanks in advance for dealing with someone new to trading.