The suspense is killing me!

Well your Morini never failed EC last year due to the temp at opens, and they were from sub zero to being cooked so you had better be careful with what you tell your wife, I would more put it down to the gravitational anomalies found throughout the wide area covered by the opens and sometimes the atmosphere found on the ranges like the strong smell of beer when shooting under a pub. To counter these problems perhaps greater or lesser spin needs to be put on the pellets so you need a range of pistols to deal with this.