Has anyone tried the JSB Beast .22

I would think they are for single loading only. 
Doubt anyone would use them for targets 
I'll try some out in my break barrel as soon as I can order some. Very curious to see the impact on a squirrel or rabbit at 10-30 yards. Give me a week or so and I will report back with a reply.
Sorry I am all up in the wrong place, this caught my attention and I'm all about trying a new lead to sling. Lol.