Not sure who's making them for Thor or when they'll be available, but these are experimental as far as I know.

They are .451" diameter and wait for it..... wait for it.....

Aluminum and weight in at 63 grains and with a max load " assuming its blackhorn209" will hit in the 2900-3000 FPS range.

I was told they are for the fast twist 1:28 rifles, but I'll certainly be trying them out when I get a chance and see what they'll do in a 1:48 twist.

If they do half way decent at 100 yards in my sidelock, I'll think about trying one out on a hog.