After reading the thread
1st thing is you need to stop reloading ammo.
2nd find any damage/issues with your rifle.
3rd go back to reloading basics, know the components you're using, use a load book like hogdons, speer etc for powder weight for components you are using.
Because if you are blowing cases up with the reloads you are loading you at fault and need to go back to the basics.