Not to my knowledge no.
From the 'pedia on the Firefly: “A similar example occurred on 14 June, during Operation Perch. Sgt. Harris of the 4th/7th Dragoon Guards, along with three standard Shermans, set up defensive positions along with the infantry after successfully driving out the Germans in the village of Lingèvres, near Tilly-sur-Seulles. Looking through his binoculars, Sgt. Harris spotted two Panthers advancing from the east. He opened fire at a range of 800 metres (870 yd), knocking out the lead Panther with his first shot, and the second Panther with his second. Relocating to a new position on the other side of the town, he spotted another three Panthers approaching from the west. From his well-concealed flanking position, he and his gunner, Trooper Mackillop, eliminated all three with just three rounds. Harris and his gunner had knocked out five Panthers with as many rounds, demonstrating the potency of the Firefly, especially when firing from a defensive position on advancing enemy tanks.[”