It's not me as a one off with an Impact like this. I have only seen a few members here posting one 'rough' hole 10 round groups at 50 yards with their Impacts.
If you look in AoA's back yard, the Phoenix Airgun club (if I read it correctly) has not had 1 Impact in their 100M results from January - July of 2016. Lots of RAW and FX Boss, but no FX Impact.