The first honed round can be triggered in any stance, e.g. on the hip. However, if you wish to gain whatever DPS speed is available, then you need to hold reload while in ADS to continually reload honed round for the duration of DPS, or convenience. So, while in ADS, hold reload before pulling trigger (and keep holding reload until done with DPS). Note that once you already have the honed round, holding or even tapping reload when not in ADS, will un-hone the round.