B&T SPR300 experience ?

I have one and really enjoyed it. Right as covid hit I was in the infancy of working up a hand load to attempt 1000m with it subsonic lol. I haven’t made it that far yet but I have shot mine to 500m with boring repeatability on 3/4 IPSC steel. Overall it’s a very cool and quiet rig although I’m not going to say it’s worth the cost over some of the cheaper options.
 
Lol yeah it’s a niche money pit. But the cool factor of breaking it out of a bag/violin case is worth a dollar or two.

I was wondering about that with distance. Watched a YouTube video of the miniQ or whatever do 300 sub to 1k and they were having to tape a ballon to the target as it was dropping straight down. But to say it can be done is impressive