Gawd I wonder what the group was like after the banana burst! If you are using squib loads use something that is going to have the projectile leave the barrel not like this it begs if they were all from the same batch that was reloaded how many more just made it out the barrel. A friend of mine uses a case filled to the bottom of the neck with Trail boss with 155gn projies and for 100m plinking its the bees knees I am considering using a similar load to run in a 6.5/284 barrel.
Also I think I see a dint in the front sight from a bit of peel hopefully no bystanders copped any errant shrapnel from the event, I reckon that is about a 20 gauge hole in the muzzle now, a good lesson on just the amount of pressures are dealt with shooting and that was a squib load.