$40 a brick? YIKES!
The last time I mail-ordered it I was paying $19...that was about a year ago. Glad I stocked up!!!
I think my local shop still has it for $25.95
Anyway, it is very fast stuff. I had a few shots go over 1,800fps in my Remmy 511.
Don't use it too much in your semi-auto's though--most aren't rated to handle hyper velocity ammo and you will REALLY be giving your action a battering. I will attest it does actually give your 22lr a *very small amount* of felt recoil!
That being said, it's too fast and too light to shoot well from most rifles....so don't epect great accuracy.