Originally Posted by Brian.Samson
The first shot is the most interesting, it looks almost like 2 pellets have been fired, but in fact it's only one.
That's an 8.4grn JSB shot at 965fps. I suspect, that if the MV was dropped you might not see such a pronounced spiral (or none at all) but what caused it? Was it the twist rate, the muzzle break or the air delivery system?
Are you sure? You can see the pellet split and two points of impact Bri, right click on the MP4 and go thru the 30 fames at 3 second mark.