Heinz Bar in May/June 1942

[@irnimal]

Hi Gentlemen,
Currently working on a piece about Heinz Bar.
He was appointed C.O. of I/JG 77 on May 11, 1942. Between 16~19 May he made 12 claims and then between 5~27 June another 11 claims, before they were transfered to North Africa.
But I'm a bit puzzled here. The fighting for the Kerch Peninsula (in Crimea) kind of ended on the 14/15 of May. Until then I found quite bag of losses (not as much as the claims made, but still haven't searched for Combat Reports). So for the 16~19 May period claims (same goes for Gollob who also made claims in the same period), I found almost no Soviet losses.
Now we always had the notion that he was in the area at the time, but I/ JG 77 was based at Konstantinovka, with some detachments at Sarabus. Konstantinovka A/f was 58km NNW of Donetsk, that is a whopping 400km away from the action taking place in the area.
I/JG 77 only fully moved to Sarabus A/f on 26 May.
So, isn't possible that the frist set of claims were made instead against Southern Front units in southen Ukraine?
Does any of you Gentlemen have more precise data about this?
Thank you.