Just wanted to share my experience with the FX slug pin probe. With the pin probe installed I found that 20% of the shots using JSB 18.1 pellets would have fliers. The consistency wasn't very good. My Impact is a Tack driver with the pellet probe, but for some reason the pin probe caused fliers about 20% of the time. I was reading the reviews on Slugs and they also state that at less than 80 yards slugs were inconsistent. The groups start to tighten up at longer ranges. This started me thinking that the issue might be the pin probe itself? My slug groups are much better using the pellet probe. (More consistent) Wondering if anyone else has noticed this as well?