Snowdog,
I really do enjoy the ammo. They are the most accurate .22WMRs
I've used in my Single-Six 6.5". Expansion and penetration is at its best. I've tested them on cinder blocks, iron plates, sheet metal, wood, etc. Overall it's a very high performance bullet. Rips big holes and drives deep. I wouldn't be opposed to using it for self defense for both two and four legged predators.
I'm not sure of the weight. I'm having trouble finding information on them. And it's not written anywhere on the box. I'm fairly sure its 50.