No, not from Simpsons. i bought mine a couple years ago. This is a Husqvarna underlever.
The 9.3x57 / 360 is a nice round as well. It is mild. About like a .38-55. The cases can be made from the british .360 or short ones from .30-30 from what i am told.

The 12.7 will shoot better than what I had on the targets. I was shooting just to see if the barrels came close togehter.
Thanks.