Yes it is.

To be honest, living a tad north of you, thus far i´ve limited the thing to the approx 20m we´ve got indoors due cold weather n downpour. There, indoors? Nah. Can´t really say that.

Using 25,4g JSB Knockouts it´s still "stacking" them like it´s done all the time.

What´s more i´d say we ARE into the transsonic area. Buuuut. Nope. Not that i´ve noticed. No strangle flyers or the likes. It just still stacks them high.